Brocade NetIron Routing Configuration Guide, 5.8pleiades.ucsc.edu/doc/brocade/netiron-05800b-routingguide.pdf · Network, VCS, VDX, Vplane, ... Closing or resetting a neighbor session

53-1003258-0322 May 2015

Brocade NetIron RoutingConfiguration Guide

Supporting Multi-Service IronWare R05.8.00b

2015, Brocade Communications Systems, Inc. All Rights Reserved.

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Contents

Preface...................................................................................................................................19Document conventions....................................................................................19

Text formatting conventions................................................................ 19Command syntax conventions............................................................ 19Notes, cautions, and warnings............................................................ 20

Brocade resources.......................................................................................... 21Contacting Brocade Technical Support...........................................................21Document feedback........................................................................................ 22

About This Document.............................................................................................................. 23Audience......................................................................................................... 23Supported hardware and software.................................................................. 23

Supported software............................................................................. 24Notice to the reader.........................................................................................24Related publications........................................................................................25How command information is presented in this guide.....................................25

Configuring BGP4 (IPv4)..........................................................................................................27BGP4 feature support..................................................................................... 27BGP4 overview............................................................................................... 30

Relationship between the BGP4 route table and the IP route table....30How BGP4 selects a path for a route (BGP best path selection

algorithm).......................................................................................31BGP4 message types......................................................................... 33Grouping of RIB-out peers.................................................................. 34

Implementation of BGP4................................................................................. 35BGP4 restart................................................................................................... 35

BGP4 Peer notification during a management module switchover..... 36BGP4 neighbor local AS..................................................................... 37

Basic configuration and activation for BGP4...................................................38Disabling BGP4...................................................................................39

BGP4 parameters........................................................................................... 40Parameter changes that take effect immediately................................ 41Parameter changes that take effect after resetting neighbor

sessions.........................................................................................41Parameter changes that take effect after disabling and re-

enabling redistribution................................................................... 42Memory considerations................................................................................... 42Basic configuration tasks required for BGP4.................................................. 42

Enabling BGP4 on the device............................................................. 42Changing the device ID.......................................................................42Setting the local AS number................................................................43Adding a loopback interface................................................................44Adding BGP4 neighbors......................................................................45Adding a BGP4 peer group................................................................. 55

Optional BGP4 configuration tasks................................................................. 57Changing the Keep Alive Time and Hold Time................................... 57Changing the BGP4 next-hop update timer........................................ 58

Brocade NetIron Routing Configuration Guide 353-1003258-03

Enabling fast external fallover...........................................................58Changing the maximum number of paths for BGP4 Multipath

load sharing.................................................................................59Customizing BGP4 Multipath load sharing........................................60Specifying a list of networks to advertise.......................................... 61Changing the default local preference.............................................. 62Using the IP default route as a valid next-hop for a BGP4 route...... 62Changing the default MED (Metric) used for route redistribution......63Enabling next-hop recursion............................................................. 63Changing administrative distances................................................... 65Requiring the first AS to be the neighbor AS.................................... 66Disabling or re-enabling comparison of the AS-Path length............. 68Enabling or disabling comparison of device IDs............................... 68Configuring the device to always compare Multi-Exit

Discriminators..............................................................................68Treating missing MEDs as the worst MEDs......................................69Configuring route reflection parameters............................................69Configuring confederations............................................................... 72Aggregating routes advertised to BGP4 neighbors...........................75

Configuring BGP4 restart..............................................................................76Configuring BGP4 Restart for the global routing instance................ 76Configuring BGP4 Restart for a VRF................................................ 76Configuring timers for BGP4 Restart (optional).................................76BGP4 null0 routing............................................................................77Configuring BGP4 null0 routing.........................................................78

Modifying redistribution parameters..............................................................80Redistributing connected routes........................................................81Redistributing RIP routes.................................................................. 81Redistributing OSPF external routes.................................................82Redistributing static routes................................................................82Redistributing IBGP routes................................................................83

Filtering......................................................................................................... 83AS-path filtering.................................................................................83BGP4 filtering communities...............................................................86Defining and applying IP prefix lists.................................................. 88Defining neighbor distribute lists....................................................... 89Defining route maps..........................................................................89Using a table map to set the tag value..............................................97Configuring cooperative BGP4 route filtering....................................98

Four-byte Autonomous System Numbers (AS4).........................................100Enabling AS4 numbers................................................................... 101

BGP4 AS4 attribute errors.......................................................................... 105Error logs.........................................................................................105

Configuring route flap dampening...............................................................106Globally configuring route flap dampening......................................107Using a route map to configure route flap dampening for

specific routes............................................................................108Using a route map to configure route flap dampening for a

specific neighbor........................................................................108Removing route dampening from a route....................................... 109Displaying and clearing route flap dampening statistics................. 109

Generating traps for BGP4..........................................................................111Configuring BGP4....................................................................................... 111Entering and exiting the address family configuration level........................ 113BGP route reflector..................................................................................... 114

Configuring BGP route reflector......................................................114Specifying a maximum AS path length....................................................... 117

Setting a global maximum AS path limit..........................................117

4 Brocade NetIron Routing Configuration Guide53-1003258-03

Setting a maximum AS path limit for a peer group or neighbor........ 118BGP4 max-as error messages......................................................................118Originating the default route..........................................................................119Changing the default metric used for route cost........................................... 119Configuring a static BGP4 network .............................................................. 119

Setting an administrative distance for a static BGP4 network...........120Limiting advertisement of a static BGP4 network to selected

neighbors.....................................................................................120Route-map continue clauses for BGP4 routes..................................121Specifying route-map continuation clauses.......................................121Dynamic route filter update............................................................... 122

Generalized TTL Security Mechanism support............................................. 125show metro mp-vlp-queue.............................................................................127clear metro mp-vlp-queue............................................................................. 129Displaying BGP4 information........................................................................ 129

Displaying summary BGP4 information............................................ 129Displaying the active BGP4 configuration......................................... 132Displaying summary neighbor information........................................ 132Displaying BGP4 neighbor information............................................. 134Displaying peer group information.................................................... 144Displaying summary route information..............................................144Displaying the BGP4 route table....................................................... 145Displaying BGP4 route-attribute entries............................................152Displaying the routes BGP4 has placed in the IP route table........... 153Displaying route flap dampening statistics........................................ 153Displaying the active route map configuration.................................. 154Displaying BGP4 graceful restart neighbor information.................... 155Displaying AS4 details...................................................................... 155Displaying route-map continue clauses............................................ 164Updating route information and resetting a neighbor session...........166Using soft reconfiguration................................................................. 166Dynamically requesting a route refresh from a BGP4 neighbor........168Closing or resetting a neighbor session............................................ 171Clearing and resetting BGP4 routes in the IP route table................. 171

Clearing traffic counters................................................................................ 171Clearing diagnostic buffers............................................................................172

OSPFv2................................................................................................................................ 173OSPFv2 (NI) PROPOSED............................................................................ 173OSPF overview............................................................................................. 174OSPF point-to-point links.............................................................................. 176Designated routers in multi-access networks................................................177Designated router election in multi-access networks.................................... 177OSPF RFC 1583 and 2328 compliance........................................................179Reduction of equivalent AS external LSAs................................................... 179

Algorithm for AS external LSA reduction...........................................180Support for OSPF RFC 2328 Appendix E.....................................................181OSPF graceful restart................................................................................... 182

OSPF stub router advertisement.......................................................182OSPF Shortest Path First throttling...................................................183IETF RFC and internet draft support.................................................184Dynamic OSPF activation and configuration.....................................184

OSPF VRF-Lite for customer edge routers................................................... 184Configuring OSPF......................................................................................... 185

Configuration rules............................................................................ 185OSPF parameters............................................................................. 185Enable OSPF on the device..............................................................186


Assign OSPF areas.........................................................................187Assign a totally stubby area............................................................ 188Assigning an area range (optional) ................................................ 191Assigning an area cost (optional parameter) ................................. 192Assigning interfaces to an area.......................................................193Setting all OSPFv2 interfaces to the passive state......................... 193Modify interface defaults................................................................. 194Change the timer for OSPF authentication changes...................... 196Block flooding of outbound LSAs on specific OSPF interfaces.......197Assign virtual links...........................................................................198Modify virtual link parameters......................................................... 199Changing the reference bandwidth for the cost on OSPF

interfaces...................................................................................201Define redistribution filters...............................................................202Modify default metric for redistribution............................................ 204Enable route redistribution.............................................................. 204Disable or re-enable load sharing................................................... 206Configure external route summarization......................................... 207Configure default route origination..................................................208Supported match and set conditions...............................................209

OSPF non-stop routing............................................................................... 210Synchronization of critical OSPF elements.................................................210

Link state database synchronization...............................................211Neighbor router synchronization..................................................... 211Interface synchronization................................................................ 212

BFD with OSPF NSR.................................................................................. 212Standby module operations........................................................................ 212

Neighbor database..........................................................................212LSA database..................................................................................212

Enabling and disabling NSR....................................................................... 213Limitations of NSR.......................................................................... 213

Adding additional parameters..................................................................... 214Disabling configuration................................................................................214OSPF distribute list..................................................................................... 215

Configuring an OSPF distribution list using ACLs ..........................215Configuring an OSPF distribution list using route maps ................ 216Modify SPF timers...........................................................................218Modify redistribution metric type..................................................... 218Modify administrative distance........................................................218Configure OSPF group Link State Advertisement (LSA) pacing.....219OSPF ABR type 3 LSA filtering.......................................................220Displaying the configured OSPF area prefix list............................. 222Modify OSPF traps generated.........................................................223Modify OSPF standard compliance setting.....................................224Modify exit overflow interval............................................................224Specify types of OSPF Syslog messages to log.............................225Configuring an OSPF network type.................................................225Configuring OSPF Graceful Restart................................................226Configuring OSPF router advertisement.........................................228Configuring OSPF shortest path first throttling................................229

Displaying OSPF information......................................................................230Displaying general OSPF configuration information....................... 231Displaying CPU utilization and other OSPF tasks...........................233Displaying OSPF area information..................................................235Displaying OSPF neighbor information...........................................235Displaying OSPF interface information........................................... 237Displaying OSPF interface brief information................................... 239Displaying OSPF route information.................................................240


Displaying OSPF database information............................................ 242Displaying OSPF external link state information............................... 244Displaying OSPF database-summary information............................ 245Displaying OSPF database link state information............................. 246Displaying OSPF ABR and ASBR information..................................248Displaying OSPF trap status............................................................. 249Viewing Configured OSPF point-to-point links.................................. 249Displaying OSPF virtual neighbor and link information..................... 251Clearing OSPF neighbors................................................................. 253Displaying OSPF Graceful Restart information.................................253Displaying OSPF Router Advertisement information........................ 254Displaying the OSPF area translator status information................... 254

Clearing OSPF information........................................................................... 255Clearing OSPF neighbors................................................................. 255Disabling and re-enabling the OSPF process................................... 256Clearing OSPF routes....................................................................... 256

IS-IS (IPv4)........................................................................................................................... 257Relationship to IP route table........................................................................ 260

Intermediate systems and end systems............................................260Domain and areas.............................................................................261Level-1 routing and Level-2 routing...................................................261Neighbors and adjacencies...............................................................262Designated IS....................................................................................262Three-way handshake for point-to-point adjacencies....................... 263

IS-IS CLI levels............................................................................................. 264Global configuration level..................................................................264Address family configuration level.....................................................264Interface level ...................................................................................265Enabling IS-IS globally...................................................................... 265

Globally configuring IS-IS on a device.......................................................... 266Setting the overload bit..................................................................... 266Configuring authentication................................................................ 267Changing the IS-IS level globally...................................................... 271Disabling or re-enabling display of hostname................................... 271Changing the Sequence Numbers PDU interval...............................272Changing the maximum LSP lifetime................................................ 272Changing the LSP refresh interval.................................................... 273Changing the LSP generation interval.............................................. 273Changing the LSP interval and retransmit interval............................273Changing the SPF timer....................................................................273Configuring the IS-IS PSPF exponential back-off feature................. 274Configuring the IS-IS flooding mechanism........................................274Globally disabling or re-enabling hello padding................................ 275Logging adjacency changes..............................................................275Logging invalid LSP packets received.............................................. 276Disabling partial SPF optimizations...................................................276Disabling incremental SPF optimizations..........................................276IS-IS incremental shortcut LSP SPF optimization.............................277

Configuring IPv4 address family route parameters....................................... 277Changing the metric style..................................................................278Changing the maximum number of load sharing paths.....................278Enabling advertisement of a default route.........................................278Changing the administrative distance for IPv4 IS-IS.........................280Configuring summary addresses...................................................... 280Redistributing routes into IPv4 IS-IS................................................. 281Changing the default redistribution metric.........................................281


Globally change the default redistribution metric ........................... 282Configuration steps......................................................................... 282ISIS Show command.......................................................................283Redistributing static IPv4 routes into IPv4 IS-IS..............................283Redistributing directly connected routes into IPv4 IS-IS................. 283Redistributing RIP routes into IPv4 IS-IS........................................ 284Redistributing OSPF routes into IPv4 IS-IS.................................... 284Redistributing BGP4+ routes into IPv4 IS-IS.................................. 284Redistributing IPv4 IS-IS routes within IPv4 IS-IS...........................284

Configuring IS-IS point-to-point over Ethernet............................................ 285Brocade IS-IS Router A configuration.............................................286Brocade IS-IS Router B configuration.............................................286Displaying IS-IS point-to-point configuration...................................286

Configuring IS-IS over a GRE IP tunnel .....................................................286Configuration considerations...........................................................287Configuring IS-IS over a GRE IP tunnel..........................................287Displaying IS-IS over GRE IP tunnel...............................................289

IS-IS Non-Stop Routing...............................................................................289Overview......................................................................................... 290Limitations.......................................................................................290Enabling and disabling IS-IS NSR.................................................. 290Displaying the IS-IS NSR status..................................................... 291

Configuring ISIS properties on an interface................................................ 296Disabling and enabling IS-IS on an interface..................................296Disabling or re-enabling formation of adjacencies.......................... 296Setting the priority for designated IS election................................. 297Limiting access to adjacencies with a neighbor.............................. 297Changing the IS-IS level on an interface........................................ 297Disabling and enabling hello padding on an interface.................... 298Changing the hello interval............................................................. 298Changing the hello multiplier...........................................................298DIS hello interval.............................................................................299Changing the metric added to advertised routes............................ 299

Displaying IPv4 IS-IS information................................................................300Displaying ISIS general information................................................300Displaying the IS-IS configuration in the running-config................. 304Displaying the name mappings.......................................................305Displaying neighbor information......................................................305Displaying IS-IS Syslog messages................................................. 308Displaying interface information......................................................308Displaying route information............................................................313Displaying LSP database entries.................................................... 314Displaying traffic statistics...............................................................318Displaying error statistics................................................................ 318Displaying the IS-IS SPF Log..........................................................320

Clearing the IS-IS SPF Log.........................................................................323Triggering the router to run SPF................................................................. 324Clearing IS-IS information...........................................................................324Clearing a specified LSP from IS-IS database............................................325

RIP..................................................................................................................................... 327RIP feature support.....................................................................................327RIP overview...............................................................................................327RIP parameters and defaults...................................................................... 328

RIP global parameters.................................................................... 328RIP interface parameters................................................................ 329

Configuring RIP parameters........................................................................330


Enabling RIP..................................................................................... 330Configuring route costs..................................................................... 331Changing the administrative distance............................................... 331Configuring redistribution.................................................................. 331Configuring route learning and advertising parameters.................... 333Changing the route loop prevention method..................................... 334Suppressing RIP route advertisement on a VRRP or VRRPE

backup interface.......................................................................... 335Configuring RIP route filters using prefix-lists and route maps......... 335Setting RIP timers............................................................................. 337

Displaying RIP Information............................................................................337Displaying CPU utilization statistics.............................................................. 339

Policy-Based Routing (IPv4).................................................................................................. 341Configuration considerations.........................................................................342Configuring a PBR policy.............................................................................. 343

Configure the route map................................................................... 343Enabling PBR....................................................................................347

Configuration examples................................................................................ 348Basic example...................................................................................348Setting the next hop.......................................................................... 349Setting the next hop to a GRE tunnel................................................350Setting the output interface to the null interface................................350Selectively applying normal routing to packets................................. 351Applying IPv6 PBR next hop VLAN flooding..................................... 351LAG formation................................................................................... 352

Policy based routing with the preserve VLAN option.................................... 352Configuring a physical interface to accept all VLAN packets for

PBR............................................................................................. 352Configuration considerations.............................................................352Configuring policy based routing with the preserve VLAN option..... 352

Configuration examples................................................................................ 353Preserve VLAN IDs and forwarding to single destination................. 353Preserve VLAN IDs and replicate to multiple ports within a VLAN... 354Specify an interface as a PBR next-hop .......................................... 354Show telemetry command.................................................................354

Policy-based routing support for preserve VLAN.......................................... 355Configuration considerations.............................................................356

Multi-VRF............................................................................................................................. 357Overview of Multi-VRF.................................................................................. 357

Benefits and applications of Multi-VRF............................................. 360Summary...........................................................................................362

Configuring Multi-VRF...................................................................................362Configuration 1..................................................................................363Configuration 2..................................................................................367

Inter-VRF Routing .................................................................................................................371Features and benefits................................................................................... 372Configuration considerations.........................................................................374

Tie breaker rules............................................................................... 374Maximum route limitations............................................................................ 374Configuring Inter-VRF routing....................................................................... 375

Show commands...............................................................................376Clearing IP routes......................................................................................... 380


Configuring the number of VRFs for IPv4 and IPv6....................................382Modified CLI commands............................................................................. 382

Management VRF ...............................................................................................................385Management VRF overview........................................................................385

Source interface and management VRF compatibility....................386Supported management applications............................................. 386

Configuring a global management VRF......................................................389Configuration notes.........................................................................390

Displaying the management VRF information............................................ 390

Basic IPv6 Connectivity.......................................................................................................395Enabling IPv6 routing..................................................................................397Configuring IPv6 on each interface.............................................................398

Configuring a global or unique local IPv6 unicast address............. 398Configuring a link-local IPv6 address..............................................399Configuring IPv6 anycast addresses.............................................. 400Configuring IPv6 127 bit mask address.......................................... 401Benefits of using 127 bit mask:....................................................... 401

Configuring the management port for an IPv6 automatic addressconfiguration..........................................................................................401

IPv6 host support........................................................................................ 402IPv6 host supported features.......................................................... 402Restricting SNMP access to an IPv6 node..................................... 402Specifying an IPv6 SNMP trap receiver..........................................403Restricting Telnet access by specifying an IPv6 ACL.....................403Restricting SSH access by specifying an IPv6 ACL........................403Restricting Web management access by specifying an IPv6 ACL. 404Restricting SNMP access by specifying an IPv6 ACL.....................404Restricting Web management access to your device to a

specific IPv6 host ......................................................................405Specifying an IPv6 Syslog server....................................................405Viewing IPv6 SNMP server addresses........................................... 405Disabling router advertisement and solicitation messages............. 406

IPv6 Non stop routing and graceful restart................................................. 406Limitations.......................................................................................406Supported protocols........................................................................407Restart global timers....................................................................... 407Configuring NSR and graceful restart on OSPFv3......................... 408Configuring Non Stop Routing on IS-IS.......................................... 411Configuring BGP graceful restart.................................................... 411IPv6 Hitless OS upgrade.................................................................413

Configuring IPv4 and IPv6 protocol stacks................................................. 414Configuring IPv6 Domain Name Server (DNS) resolver............................. 415

Defining a DNS entry...................................................................... 415IPv6 Non-Stop Routing support.................................................................. 416

Limitations.......................................................................................416Configuring IPv6 NSR support........................................................416

ECMP load sharing for IPv6........................................................................417Disabling or re-enabling ECMP load sharing for IPv6.....................417Changing the maximum number of load sharing paths for IPv6..... 417

DHCP relay agent for IPv6..........................................................................418DHCPv6 Relay Agent Prefix Delegation Notification...................... 418Configuring DHCP for IPv6 relay agent.......................................... 420Configuring DHCPv6 Relay Agent Prefix Delegation Notification...420


Displaying the DHCPv6 Relay Agent Prefix DelegationNotification information................................................................ 422

Enabling support for network-based ECMP load sharing for IPv6.... 425Displaying ECMP load-sharing information for IPv6......................... 426

Configuring IPv6 ICMP..................................................................................426Configuring ICMP rate limiting.......................................................... 427Enabling ICMP redirect messages....................................................427Disabling or re-enabling ICMP redirect messages............................428Disabling ICMP error messages for source-routed IPv6 packets..... 428Enabling ICMP error messages for an unreachable address........... 428Enabling ICMP messages for an unreachable route.........................429Enabling ICMP error messages for IPv6 packets with hop-limit 0.... 429Enabling ICMP error messages for multicast Too Big packets......... 429Enabling ICMP error messages for CES/CER devices.....................430

Configuring IPv6 neighbor discovery............................................................ 430Neighbor solicitation and advertisement messages..........................431Router advertisement and solicitation messages..............................431Neighbor redirect messages............................................................. 432Setting neighbor solicitation parameters for duplicate address

detection...................................................................................... 432Setting IPv6 router advertisement parameters..................................433Controlling prefixes advertised in IPv6 router advertisement

messages.................................................................................... 433Configuring the Domain Name of DNS suffix ...................................434Configuring the recursive DNS server addresses and lifetime

multiplier...................................................................................... 435Setting flags in IPv6 router advertisement messages....................... 435Configuring reachable time for remote IPv6 nodes...........................436

IPv6 source routing security enhancements................................................. 437Complete filtering of IPv6 source-routed packets............................. 437Selective filtering of IPv6 source-routed packets using ACLs...........438Complete and selective filtering combination and order of

application................................................................................... 439Configuration examples for complete and selective filtering of

source routed packets................................................................. 439Changing the IPv6 MTU................................................................................441

How to determine the actual IPv6 MTU value ..................................442Configuring static neighbor entries................................................................442Limiting the number of hops an IPv6 packet can traverse............................ 443QoS for IPv6 traffic........................................................................................443Configuring the rate limit for IPv6 subnet traffic............................................ 444Clearing global IPv6 information................................................................... 444

Clearing the IPv6 cache.................................................................... 444Clearing IPv6 neighbor information...................................................445Clearing IPv6 routes from the IPv6 route table................................. 445Clearing IPv6 traffic statistics............................................................ 445Clearing statistics for IPv6 subnet rate limiting................................. 446

Displaying global IPv6 information................................................................ 446Displaying IPv6 cache information.................................................... 446Displaying IPv6 interface information................................................447Displaying interface counters for all ports......................................... 449Displaying IPv6 neighbor information................................................450Displaying the IPv6 route table ........................................................ 452Displaying local IPv6 devices............................................................457Displaying IPv6 TCP information...................................................... 458Displaying IPv6 traffic statistics.........................................................461Displaying statistics for IPv6 subnet rate limiting.............................. 465Displaying IPv6 information for Router Advertisement Options........ 466


Displaying IPv6 interface information for Router AdvertisementOptions...................................................................................... 467

Commands..................................................................................................468ipv6 nd ra-dns-server ..................................................................... 469ipv6 nd ra-domain-name ................................................................ 470

IPv6 Addressing ................................................................................................................. 471IPv6 addressing overview........................................................................... 471

IPv6 address types..........................................................................472IPv6 stateless auto-configuration................................................................473

IPv6 Prefix List.................................................................................................................... 475Configuring an IPv6 prefix list..................................................................... 475Displaying prefix list information..................................................................476IPv6 ND Prefix Suppress............................................................................ 477

Configuring IPv6 Prefix Suppress................................................... 477IPv6 ND Router Advertisement Control.......................................... 478

Managing a Device Over IPv6.............................................................................................. 481Using the IPv6 copy command................................................................... 482

Copying a file to an IPv6 TFTP server............................................ 482Copying a file from an IPv6 TFTP server........................................483

Using the IPv6 ncopy command................................................................. 484Copying a primary or secondary boot image from flash memory

to an IPv6 TFTP server............................................................. 484Copying the running or startup configuration to an IPv6 TFTP

server.........................................................................................485Uploading files from an IPv6 TFTP server ..................................... 485

Using the IPv6 ping command.................................................................... 486Using the IPv6 traceroute command...........................................................487Using Telnet................................................................................................487

Using the IPv6 Telnet command.....................................................488Establishing a Telnet session from an IPv6 host............................ 489

Using Secure Shell......................................................................................489

Static IPv6 Routes.............................................................................................................. 491Configuring a static IPv6 route....................................................................491Configuring a IPv6 static multicast route.....................................................493BFD for Static Routes................................................................................. 494

Configuration considerations...........................................................494Configuring BFD for static routes....................................................495Show commands.............................................................................496

Configuring BGP4+.............................................................................................................499Supported BGP4+ features.........................................................................499BGP4+ overview......................................................................................... 500Address family configuration level...............................................................500Configuring BGP4+..................................................................................... 501

Enabling BGP4+............................................................................. 501Configuring BGP4+ neighbors using global or unique link local

IPv6 addresses..........................................................................502Adding BGP4+ neighbors using link-local addresses..................... 503


Configuring a BGP4+ peer group......................................................504Advertising the default BGP4+ route.................................................506Importing routes into BGP4+ ............................................................507Redistributing prefixes into BGP4+................................................... 507Aggregating routes advertised to BGP4 neighbors...........................508Using route maps.............................................................................. 508Enabling next-hop recursion............................................................. 509

Clearing BGP4+ information......................................................................... 511Removing route flap dampening....................................................... 511Clearing route flap dampening statistics........................................... 511Clearing BGP4+ local route information............................................512Clearing BGP4+ neighbor information.............................................. 512Clearing and resetting BGP4+ routes in the IPv6 route table........... 515Clearing traffic counters for all BGP4+ neighbors.............................515

Displaying BGP4+ information...................................................................... 515Displaying the BGP4+ route table.....................................................516Displaying BGP4+ route information.................................................521Displaying BGP4+ route-attribute entries..........................................523Displaying the BGP4+ running configuration.................................... 525Displaying dampened BGP4+ paths................................................. 525Displaying filtered-out BGP4+ routes................................................526Displaying route flap dampening statistics........................................ 530Displaying BGP4+ neighbor information........................................... 531Displaying BGP4+ peer group configuration information.................. 554Displaying BGP4+ summary............................................................. 555

Configuring BGP4+ graceful restart.............................................................. 557Configuring BGP4+ graceful restart for the global routing instance..557Configuring timers for BGP4+ graceful restart (optional).................. 557Displaying BGP4+ graceful restart neighbor information.................. 558

OSPFv3................................................................................................................................ 559OSPFv3 feature support............................................................................... 559OSPFv3 overview......................................................................................... 560LSA types for OSPFv3.................................................................................. 561Configuring OSPFv3..................................................................................... 561

Enabling OSPFv3..............................................................................562Assigning OSPFv3 areas.................................................................. 563Assigning an area cost for OSPFv3 (optional parameter).................567Specifying a network type................................................................. 568Configuring virtual links..................................................................... 569Changing the reference bandwidth for the cost on OSPFv3

interfaces..................................................................................... 570Redistributing routes into OSPFv3....................................................572Filtering OSPFv3 routes....................................................................575Configuring default route origination................................................. 577Modifying Shortest Path First timers................................................. 578Modifying administrative distance..................................................... 579Configuring the OSPFv3 LSA pacing interval................................... 580Modifying exit overflow interval......................................................... 580Modifying external link state database limit.......................................581Setting all OSPFv3 interfaces to the passive state........................... 581Modifying OSPFv3 interface defaults................................................581Disabling or re-enabling event logging..............................................582IPsec for OSPFv3............................................................................. 582Configuring IPsec for OSPFv3.......................................................... 583Configuring OSPFv3 Graceful Restart Helper mode........................ 589Configuring OSPFv3 Non-stop routing (NSR)...................................590


Configuring OSPFv3 max-metric router LSA.................................. 590Displaying OSPFv3 information.................................................................. 592

General OSPFv3 configuration information.................................... 593Displaying OSPFv3 area information..............................................593Displaying OSPFv3 database information...................................... 594Displaying IPv6 interface information..............................................600Displaying IPv6 OSPFv3 interface information............................... 600Displaying OSPFv3 memory usage................................................ 604Displaying OSPFv3 neighbor information....................................... 605Displaying routes redistributed into OSPFv3.................................. 608Displaying OSPFv3 route information.............................................609Displaying OSPFv3 SPF information.............................................. 611Displaying OSPFv3 GR Helper mode information ......................... 613Displaying OSPFv3 NSR information..............................................613Displaying OSPFv3 max-metric router LSA information................. 614Displaying IPv6 OSPF virtual link information.................................614Displaying OSPFv3 virtual neighbor information............................ 615IPsec examples...............................................................................616

OSPFv3 clear commands .......................................................................... 623Clearing all OSPFv3 data................................................................623Clearing all OSPFv3 packet counters............................................. 623Scheduling Shortest Path First (SPF) calculation........................... 624Clearing all redistributed routes from OSPFv3................................624Clearing OSPFv3 neighbors........................................................... 624

IS-IS (IPv6)......................................................................................................................... 627IPv6 IS-IS single-topology mode.................................................................628IS-IS CLI levels........................................................................................... 629

Global configuration level................................................................630Address family configuration level...................................................630Interface level .................................................................................631

Configuring IPv6 IS-IS.................................................................................631Enabling IPv6 IS-IS globally............................................................631Enabling IS-IS and assigning an IPv6 address to an interface ...... 632

Configuring IPv6 IS-IS single topology....................................................... 633Globally configuring IS-IS on a device........................................................ 633Configuring IPv6 specific address family route parameters........................633

Changing the maximum number of load sharing paths.................. 634Enabling advertisement of a default route...................................... 634Changing the administrative distance for IPv6 IS-IS.......................635Configuring summary prefixes........................................................ 636Redistributing routes into IPv6 IS-IS............................................... 636Changing the default redistribution metric...................................... 637Globally change the default redistribution metric............................ 637Configuration steps......................................................................... 637ISIS Show command.......................................................................638Redistributing static IPv6 routes into IPv6 IS-IS..............................638Redistributing directly connected routes into IPv6 IS-IS................. 639Redistributing RIPng routes into IPv6 IS-IS.................................... 639Redistributing OSPF version 3 routes into IPv6 IS-IS.....................639Redistributing BGP4+ routes into IPv6 IS-IS.................................. 640Redistributing IPv6 IS-IS routes within IPv6 IS-IS...........................640Disabling and re-enabling IPv6 protocol-support consistency

checks....................................................................................... 641Configuring IS-IS properties on an interface...............................................641

Changing the metric added to advertised routes............................ 641IPv6 IS-IS Non-Stop Routing...................................................................... 642


Overview........................................................................................... 642Configuring IS-IS NSR...................................................................... 643

Displaying IPv6 IS-IS information..................................................................643Displaying IPv6 IS-IS information......................................................643Displaying the IPv6 IS-IS configuration in the running

configuration................................................................................ 645Displaying IPv6 IS-IS error statistics................................................. 645Displaying LSP database entries...................................................... 646Displaying the system ID to name mappings.................................... 652Displaying IPv6 IS-IS interface information.......................................652Displaying IPv6 IS-IS memory usage................................................656Displaying IPv6 IS-IS neighbor information.......................................656Displaying IPv6 IS-IS redistribution information................................ 658Displaying the IPv6 IS-IS route information...................................... 659Displaying IPv6 IS-IS traffic statistics................................................660

IPv6 IS-IS Multi-Topology............................................................................. 661Configuration considerations for IPv6 IS-IS MT................................ 661Migrating to IPv6 IS-IS MT................................................................ 662Maintaining MT adjacencies..............................................................662New TLV attributes............................................................................662Enabling IPv6 IS-IS MT.....................................................................662Configuring the IS-IS IPv6 PSPF exponential back-off feature.........663Changing the SPF timer....................................................................664Changing the metric added value..................................................... 664Configuration example to deploy IPv6 IS-IS MT............................... 664

default-link-metric..........................................................................................667reverse-metric............................................................................................... 669isis reverse-metric......................................................................................... 672

RIPng................................................................................................................................... 675RIPng feature support................................................................................... 675RIPng Overview............................................................................................ 675Configuring RIPng.........................................................................................676

Enabling RIPng................................................................................. 676Configuring RIPng timers.................................................................. 677Configuring route learning and advertising parameters.................... 678Redistributing routes into RIPng....................................................... 679Controlling distribution of routes through RIPng............................... 680Configuring poison reverse parameters............................................ 680

Clearing RIPng routes from IPv6 route table................................................ 681Clearing RIPng for a VRF instance................................................... 681

Displaying RIPng information........................................................................681Displaying RIPng configuration......................................................... 681Displaying RIPng routing table..........................................................683

Policy-Based Routing (IPv6).................................................................................................. 685Configuration considerations.........................................................................686

Considerations specific to Brocade NetIron CES Series andBrocade NetIron CER Series.......................................................687

Configuring an IPv6 PBR policy.................................................................... 687Configuring the route map.................................................................687Enabling IPv6 PBR............................................................................691LAG formation................................................................................... 691

Configuration examples................................................................................ 691Basic example...................................................................................691Combined example........................................................................... 691


Selectively applying normal routing to packets............................... 692Displaying IPv6 PBR information................................................................ 692

Displaying IPv6 accounting information.......................................... 692Displaying IPv6 PBR route map information...................................693Displaying IPv6 ACL and route map informationon the Brocade

NetIron CES Series and Brocade NetIron CER Series............. 693Policy based routing with the preserve VLAN option.................................. 694

Configuring a physical interface to accept all VLAN packets forPBR........................................................................................... 695

Configuration considerations...........................................................695Configuring policy based routing with the preserve VLAN option... 695

Configuration examples.............................................................................. 695Preserve VLAN IDs and forwarding to specific egress port ........... 696Preserve VLAN IDs and forwarding to multiple ports within a

VLAN......................................................................................... 696Applying IPv6 PBR next hop VLAN flooding...................................696

Policy-based routing support for preserve VLAN........................................697Configuration considerations...........................................................697

Layer 2 Policy-based Routing.............................................................................................. 699Layer 2 Policy-based routing overview....................................................... 699

Layer 2 PBR configuration considerations......................................700Configuring Layer 2 PBR policy.................................................................. 700

Configuring a route map..................................................................701Enabling Layer 2 PBR.................................................................................704

Examples for managing MPLS, MAC-in-MAC, ARP, and LACPtraffic types using Layer 2 PBR................................................. 704

Upgrade and downgrade considerations........................................ 706LAG formation.................................................................................706

Configuration examples.............................................................................. 706Layer 2 PBR with the preserve VLAN option.............................................. 707

Configuring a physical interface to accept all VLAN packets forPBR........................................................................................... 707

Configuration considerations...........................................................707Configuring PBR with the preserve VLAN option............................707Preserve VLAN option as part of a set policy................................. 707

PBR support for preserve VLAN................................................................. 708Displaying Layer 2 PBR information........................................................... 708

Displaying Layer 2 PBR accounting information.............................708Displaying Layer 2 PBR route map information.......................................... 709

Displaying route map information....................................................709Displaying telemetry information.....................................................709

Clearing Layer 2 ACL accounting information............................................ 711

VRRP and VRRP-E...............................................................................................................713Overview of VRRP...................................................................................... 715

Standard VRRP ..............................................................................715Enhancements to VRRP................................................................. 717

Overview of VRRP-E...................................................................................721ARP behavior with VRRP-E............................................................722

Comparison of VRRP and VRRP-E............................................................ 722VRRP and VRRP-E parameters................................................................. 723Configuring parameters specific to VRRP...................................................727

Configuring the VRRP version........................................................ 727Configuring the Owner for IPv4.......................................................728Configuring the Owner for IPv6.......................................................728


Configuring a Backup for IPv4.......................................................... 729Configuring a Backup for IPv6.......................................................... 729Configuration rules and feature limitations for VRRP........................730

Configuring parameters specific to VRRP-E ................................................ 730Configuring IPv4 VRRP-E................................................................. 730Configuring IPv6 VRRP-E................................................................. 731Configuration rules and feature limitations for VRRP-E.................... 731

Configuring additional VRRP and VRRP-E parameters................................732Authentication type............................................................................732Suppressing RIP advertisements on backup routers for the

backup up interface..................................................................... 734Hello interval..................................................................................... 734Dead interval..................................................................................... 735Backup hello message state and interval..........................................735Track port.......................................................................................... 736Track priority..................................................................................... 736Backup preempt................................................................................ 736Master router abdication and reinstatement......................................737VRRP-extended slow start................................................................ 738VRRP-extended scale timer..............................................................738Enable and Disable password display.............................................. 739

Multiple virtual IP address support for VRRP-E............................................ 739Configuring multiple virtual IP addresses for VRRP-E...................... 740Displaying multiple virtual IP addresses for VRRP-E information..... 741

VRRP-E scaling using logical groups............................................................742Configuring VRRP-E scaling............................................................. 743Displaying VRRP-E scaling information............................................ 744

Alternate VRRPv2 checksum for VRRPv3 IPv4 sessions.............................745Enabling the v2 checksum computation method in a VRRPv3

IPv4 session................................................................................ 745Displaying alternate v2 checksum settings....................................... 746

Displaying VRRP and VRRP-E information for IPv4.....................................746Displaying summary information....................................................... 747Displaying detailed information......................................................... 748Displaying statistics...........................................................................752

Displaying VRRP and VRRP-E information for IPv6.....................................752Displaying summary information....................................................... 753Displaying detailed information......................................................... 753Displaying statistics...........................................................................754

Displaying configuration information for VRRP and VRRP-E....................... 754Clearing VRRP or VRRP-E statistics............................................................ 755Configuration examples................................................................................ 755

VRRP example for IPv4.................................................................... 755VRRP example for IPv6.................................................................... 757VRRP-E example for IPv4.................................................................758VRRP-E example for IPv6.................................................................759

VRRP-E Extension for Server Virtualization................................................. 761VRRP-E Extension for server virtualization configuration example.. 762Packets from the local subnet of the virtual IP address.................... 762IPv4 VRF support..............................................................................762Configuration considerations.............................................................762

GPRS Tunneling Protocol...................................................................................................... 765GPRS Tunneling Protocol Overview............................................................. 765GPRS Tunneling Protocol Filtering and Load-balancing...............................765

About GTP load-balance configuration............................................. 765


Enable masking of the TEID (Tunnel endpoint identifier) field forGTP packets..............................................................................767

MPLS unknown label handling........................................................767Enabling internal loopback..............................................................768GTP Profile configuration commands............................................. 768

Enabling and Disabling MAC movement syslog on MLX device............................................. 773

Routing commands.............................................................................................................775default-link-metric........................................................................................776ipv6 nd ra-dns-server ................................................................................. 778ipv6 nd ra-domain-name ............................................................................ 779isis reverse-metric.......................................................................................780l2 policy route-map......................................................................................783mac-move-det-syslog..................................................................................784match l2acl..................................................................................................786neighbor next-hop-self (BGP)..................................................................... 787reverse-metric............................................................................................. 788show access-list accounting........................................................................791show metro mp-vlp-queue...........................................................................793system-max ip-vrf-route.............................................................................. 795system-max ipv6-vrf-route...........................................................................796

Index.................................................................................................................................. 797


Preface

Document conventions....................................................................................................19 Brocade resources.......................................................................................................... 21 Contacting Brocade Technical Support...........................................................................21 Document feedback........................................................................................................ 22

Document conventionsThe document conventions describe text formatting conventions, command syntax conventions, andimportant notice formats used in Brocade technical documentation.

Text formatting conventionsText formatting conventions such as boldface, italic, or Courier font may be used in the flow of the textto highlight specific words or phrases.

Format Description

bold text Identifies command names

Identifies keywords and operands

Identifies the names of user-manipulated GUI elements

Identifies text to enter at the GUI

italic text Identifies emphasis

Identifies variables and modifiers

Identifies paths and Internet addresses

Identifies document titles

Courier font Identifies CLI outputIdentifies command syntax examples

Command syntax conventionsBold and italic text identify command syntax components. Delimiters and operators define groupings ofparameters and their logical relationships.

Convention Description

bold text Identifies command names, keywords, and command options.

italic text Identifies a variable.


Convention Description

value In Fibre Channel products, a fixed value provided as input to a commandoption is printed in plain text, for example, --show WWN.

[ ] Syntax components displayed within square brackets are optional.

Default responses to system prompts are enclosed in square brackets.

{ x | y | z } A choice of required parameters is enclosed in curly brackets separated byvertical bars. You must select one of the options.

In Fibre Channel products, square brackets may be used instead for thispurpose.

x | y A vertical bar separates mutually exclusive elements.

< > Nonprinting characters, for example, passwords, are enclosed in anglebrackets.

... Repeat the previous element, for example, member[member...].

\ Indicates a soft line break in command examples. If a backslash separatestwo lines of a command input, enter the entire command at the prompt withoutthe backslash.

Notes, cautions, and warningsNotes, cautions, and warning statements may be used in this document. They are listed in the order ofincreasing severity of potential hazards.

NOTEA Note provides a tip, guidance, or advice, emphasizes important information, or provides a referenceto related information.

ATTENTIONAn Attention statement indicates a stronger note, for example, to alert you when traffic might beinterrupted or the device might reboot.

CAUTIONA Caution statement alerts you to situations that can be potentially hazardous to you or causedamage to hardware, firmware, software, or data.

DANGERA Danger statement indicates conditions or situations that can be potentially lethal orextremely hazardous to you. Safety labels are also attached directly to products to warn ofthese conditions or situations.

Notes, cautions, and warnings


Brocade resourcesVisit the Brocade website to locate related documentation for your product and additional Brocaderesources.

You can download additional publications supporting your product at www.brocade.com. Select theBrocade Products tab to locate your product, then click the Brocade product name or image to open theindividual product page. The user manuals are available in the resources module at the bottom of thepage under the Documentation category.

To get up-to-the-minute information on Brocade products and resources, go to MyBrocade. You canregister at no cost to obtain a user ID and password.

Release notes are available on MyBrocade under Product Downloads.

White papers, online demonstrations, and data sheets are available through the Brocade website.

Contacting Brocade Technical SupportAs a Brocade customer, you can contact Brocade Technical Support 24x7 online, by telephone, or by e-mail. Brocade OEM customers contact their OEM/Solutions provider.

Brocade customersFor product support information and the latest information on contacting the Technical AssistanceCenter, go to http://www.brocade.com/services-support/index.html.

If you have purchased Brocade product support directly from Brocade, use one of the following methodsto contact the Brocade Technical Assistance Center 24x7.

Online Telephone E-mail

Preferred method of contact for non-urgent issues:

My Cases through MyBrocade Software downloads and licensing

tools Knowledge Base

Required for Sev 1-Critical and Sev2-High issues:

Continental US: 1-800-752-8061 Europe, Middle East, Africa, and

Asia Pacific: +800-AT FIBREE(+800 28 34 27 33)

For areas unable to access tollfree number: +1-408-333-6061

Toll-free numbers are available inmany countries.

[email protected]

Please include:

Problem summary Serial number Installation details Environment description

Brocade OEM customersIf you have purchased Brocade product support from a Brocade OEM/Solution Provider, contact yourOEM/Solution Provider for all of your product support needs.

OEM/Solution Providers are trained and certified by Brocade to support Brocade products. Brocade provides backline support for issues that cannot be resolved by the OEM/Solution Provider.

Brocade resources


http://www.brocade.comhttp://my.Brocade.comhttp://my.Brocade.comhttp://www.brocade.com/products-solutions/products/index.pagehttp://www.brocade.com/services-support/index.htmlhttps://fedsso.brocade.com/sps/BrocadeIDPSF/saml20/logininitial?RequestBinding=HTTPPost&PartnerId=https://brocade.my.salesforce.com&NameIdFormat=emailhttp://my.brocade.com/wps/myportal/!ut/p/b1/hY7NDoIwEIQfaXe7FdNjoWhoqBgThPZiejJNFC_G50eIV8scJ9_8QABPRCz3XDCMEKb4Sff4Tq8pPuC0OKG4lQd9ZclMnbUVNkdz6ZV1AssdDF_EZ5BWrg3OuIpqwYRno7Ahw1bXSiDiL49_pHErP0DInlwerEBm4ul9P2LSM-kStbY!/http://kb.brocade.com/kb/index?page=homehttp://www.brocade.com/services-support/international_telephone_numbers/index.pagemailto:[email protected]

Brocade Supplemental Support augments your existing OEM support contract, providing directaccess to Brocade expertise. For more information, contact Brocade or your OEM.

For questions regarding service levels and response times, contact your OEM/Solution Provider.

Document feedbackTo send feedback and report errors in the documentation you can use the feedback form posted withthe document or you can e-mail the documentation team.

Quality is our first concern at Brocade and we have made every effort to ensure the accuracy andcompleteness of this document. However, if you find an error or an omission, or you think that a topicneeds further development, we want to hear from you. You can provide feedback in two ways:

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Provide the publication title, part number, and as much detail as possible, including the topic headingand page number if applicable, as well as your suggestions for improvement.

Document feedback


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About This Document

Audience......................................................................................................................... 23 Supported hardware and software.................................................................................. 23 Notice to the reader.........................................................................................................24 Related publications........................................................................................................25 How command information is presented in this guide.....................................................25

AudienceThis document is designed for system administrators with a working knowledge of Layer 2 and Layer 3switching and routing.

If you are using a Brocade device, you should be familiar with the following protocols if applicable toyour network - IP, RIP, OSPF, BGP, ISIS, IGMP, PIM, MPLS, and VRRP.

Supported hardware and softwareThe following hardware platforms are supported by this release of this guide:


Supported devicesTABLE 1

Brocade NetIron XMR Series Brocade MLX Series NetIron CES 2000 and NetIron CER 2000 Series

Brocade NetIron XMR 4000




Brocade MLX-4

Brocade MLX-8

Brocade MLX-16

Brocade MLX-32

Brocade MLXe-4

Brocade MLXe-8

Brocade MLXe-16

Brocade MLXe-32

Brocade NetIron CES 2024C

Brocade NetIron CES 2024F

Brocade NetIron CES 2048C

Brocade NetIron CES 2048CX

Brocade NetIron CES 2048F

Brocade NetIron CES 2048FX

Brocade NetIron CER 2024C

Broc

Documents

Brocade NetIron Routing Configuration Guide, 5.8pleiades.ucsc.edu/doc/brocade/netiron-05800b-routingguide.pdf · Network, VCS, VDX, Vplane, ... Closing or resetting a neighbor session