Dell EMC Networking N-SeriesN1100-ON, N1500, N2000,

N2100-ON, N3000-ON, andN3100-ON Switches

User’s ConfigurationGuide

Version 6.6.0.x - N1100-ON/N2000/N2100-ON/N3000-ON/N3100-ON Series Switches

Regulatory Models: E04W, E05W, E06W, E07W, E15W, E16W, E17W, E18W

Notes and Cautions NOTE: A NOTE indicates important information that helps you make better use of

your computer.

CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed.

____________

Information in this publication is subject to change without notice.

Copyright © 2019 Dell EMC Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. Dell EMC™ and the Dell EMC logo are trademarks of Dell EMC Inc. in the United States and/or other jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies.

Marketing Models: N1108T-ON, N1108P-ON, N1124T-ON, N1124P-ON, N1148T-ON, N1148P-ON, N1524, N1524P, N1548, N1548P, N2024, N2024P, N2048, N2048P, N2128PX-ON, N3024EP-ON, N3024ET-ON, N3024EF-ON, N3048ET-ON, N3048EP-ON, N3132PX-ON

Regulatory Models: E04W, E05W, E06W, E07W, E15W, E16W, E17W, E18W

April 2019 Rev. A07

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . 49

About This Document . . . . . . . . . . . . . . . . . . 49

Audience . . . . . . . . . . . . . . . . . . . . . . . . . 50

Document Conventions . . . . . . . . . . . . . . . . . 50

Additional Documentation. . . . . . . . . . . . . . . . 51

2 Switch Feature Overview . . . . . . . . . . . . 53

System Management Features . . . . . . . . . . . . . 54

Multiple Management Options . . . . . . . . . . . 54

System Time Management . . . . . . . . . . . . . 54

Log Messages . . . . . . . . . . . . . . . . . . . 55

System Reset . . . . . . . . . . . . . . . . . . . . 55

Integrated DHCP Server . . . . . . . . . . . . . . 55

Management of Basic Network Information . . . . 56

IPv6 Management Features . . . . . . . . . . . . 56

Dual Software Images . . . . . . . . . . . . . . . 56

File Management . . . . . . . . . . . . . . . . . . 57

Switch Database Management Templates . . . . 57

Automatic Installation of Firmware and

Configuration . . . . . . . . . . . . . . . . . . . . 57

sFlow . . . . . . . . . . . . . . . . . . . . . . . . 58

SNMP Alarms and Trap Logs. . . . . . . . . . . . 58

CDP Interoperability Through ISDP . . . . . . . . 59

Remote Monitoring (RMON) . . . . . . . . . . . . 59

Stacking Features . . . . . . . . . . . . . . . . . . . . 59

Contents 3

Mixed and Single Series Stacking . . . . . . . . . 59

Single IP Management . . . . . . . . . . . . . . . 60

Master Failover with Transparent Transition. . . . 61

Nonstop Forwarding on the Stack . . . . . . . . . 61

Hot Add/Delete and Firmware Synchronization . . 61

Security Features . . . . . . . . . . . . . . . . . . . . 62

Configurable Access and Authentication Profiles . 62

Password-Protected Management Access . . . . 62

Strong Password Enforcement . . . . . . . . . . . 62

TACACS+ Client . . . . . . . . . . . . . . . . . . . 62

RADIUS Support . . . . . . . . . . . . . . . . . . 63

SSH/SSL . . . . . . . . . . . . . . . . . . . . . . . 63

Inbound Telnet Control . . . . . . . . . . . . . . . 63

Denial of Service . . . . . . . . . . . . . . . . . . 63

Port Protection . . . . . . . . . . . . . . . . . . . 64Captive Portal . . . . . . . . . . . . . . . . . . . . 65

802.1X Authentication (IEEE 802.1X) . . . . . . . . 65

MAC-Based 802.1X Authentication . . . . . . . . . 66

802.1X Monitor Mode . . . . . . . . . . . . . . . . 66

Port Security . . . . . . . . . . . . . . . . . . . . 67

Access Control Lists (ACLs) . . . . . . . . . . . . 67

Time-Based ACLs . . . . . . . . . . . . . . . . . . 67

IP Source Guard (IPSG) . . . . . . . . . . . . . . . 68

DHCP Snooping . . . . . . . . . . . . . . . . . . . 68

Dynamic ARP Inspection . . . . . . . . . . . . . . 68

Protected Ports (Private VLAN Edge). . . . . . . . 68

Green Technology Features . . . . . . . . . . . . . . . 70

Energy Detect Mode . . . . . . . . . . . . . . . . 70

Energy Efficient Ethernet . . . . . . . . . . . . . . 70

Power Utilization Reporting . . . . . . . . . . . . . 70

Power over Ethernet (PoE) Plus Features . . . . . . . . 71

4 Contents

Key PoE Plus Features . . . . . . . . . . . . . . . 71

Power Over Ethernet (PoE) Plus Configuration . . 72

PoE Plus Support . . . . . . . . . . . . . . . . . . 72

PoE 60W Support . . . . . . . . . . . . . . . . . . 73Powered Device Detection . . . . . . . . . . . . . 73

PoE Power Management Modes . . . . . . . . . . 73

Power Management in Guard Band . . . . . . . . 75

PoE Plus Default Settings. . . . . . . . . . . . . . 76

Switching Features . . . . . . . . . . . . . . . . . . . 78

Flow Control Support (IEEE 802.3x) . . . . . . . . . 78

Head of Line Blocking Prevention . . . . . . . . . 78

Jumbo Frames Support . . . . . . . . . . . . . . . 78

Auto-MDI/MDIX Support . . . . . . . . . . . . . . 78

VLAN-Aware MAC-based Switching. . . . . . . . 78

Back Pressure Support . . . . . . . . . . . . . . . 79

Auto-negotiation . . . . . . . . . . . . . . . . . . 79

Storm Control . . . . . . . . . . . . . . . . . . . . 79

Port Mirroring . . . . . . . . . . . . . . . . . . . . 80

Static and Dynamic MAC Address Tables . . . . . 80

Link Layer Discovery Protocol (LLDP) . . . . . . . 80

Link Layer Discovery Protocol (LLDP) for Media

Endpoint Devices . . . . . . . . . . . . . . . . . . 81

Cisco Protocol Filtering . . . . . . . . . . . . . . . 81

DHCP Layer-2 Relay . . . . . . . . . . . . . . . . 81

Virtual Local Area Network Supported Features . . . . 82

VLAN Support . . . . . . . . . . . . . . . . . . . . 82

Port-Based VLANs . . . . . . . . . . . . . . . . . 82

IP Subnet-based VLAN . . . . . . . . . . . . . . . 82

MAC-based VLAN . . . . . . . . . . . . . . . . . 82

IEEE 802.1v Protocol-Based VLANs . . . . . . . . 82

Voice VLAN . . . . . . . . . . . . . . . . . . . . . 83

GARP and GVRP Support . . . . . . . . . . . . . . 83

Contents 5

Guest VLAN . . . . . . . . . . . . . . . . . . . . . 83

Unauthorized VLAN . . . . . . . . . . . . . . . . . 83

Double VLANs . . . . . . . . . . . . . . . . . . . . 83

Spanning Tree Protocol Features . . . . . . . . . . . . 85

Spanning Tree Protocol (STP) . . . . . . . . . . . 85

Spanning Tree Port Settings . . . . . . . . . . . . 85

Rapid Spanning Tree . . . . . . . . . . . . . . . . 85

Multiple Spanning Tree . . . . . . . . . . . . . . . 85

Bridge Protocol Data Unit (BPDU) Guard . . . . . . 86BPDU Filtering. . . . . . . . . . . . . . . . . . . . 86

RSTP-PV and STP-PV . . . . . . . . . . . . . . . . 86

Link Aggregation Features . . . . . . . . . . . . . . . . 87

Link Aggregation . . . . . . . . . . . . . . . . . . 87

Link Aggregate Control Protocol (LACP) . . . . . . 88

Multi-Switch LAG (MLAG) . . . . . . . . . . . . . 88

Routing Features . . . . . . . . . . . . . . . . . . . . . 89

Address Resolution Protocol (ARP) Table

Management . . . . . . . . . . . . . . . . . . . . 89

VLAN Routing . . . . . . . . . . . . . . . . . . . . 89

IP Configuration . . . . . . . . . . . . . . . . . . . 89

Open Shortest Path First (OSPF) . . . . . . . . . . 90Border Gateway Protocol (BGP) . . . . . . . . . . 90

Virtual Routing and Forwarding (VRF) . . . . . . . 90

BOOTP/DHCP Relay Agent . . . . . . . . . . . . . 91IP Helper and DHCP Relay . . . . . . . . . . . . . 91

Routing Information Protocol . . . . . . . . . . . . 91

Router Discovery . . . . . . . . . . . . . . . . . . 91

Routing Table . . . . . . . . . . . . . . . . . . . . 91

Virtual Router Redundancy Protocol (VRRP) . . . . 92

Tunnel and Loopback Interfaces . . . . . . . . . . 92

IPv6 Routing Features . . . . . . . . . . . . . . . . . . 93

6 Contents

IPv6 Configuration . . . . . . . . . . . . . . . . . 93

IPv6 Routes . . . . . . . . . . . . . . . . . . . . . 93

OSPFv3 . . . . . . . . . . . . . . . . . . . . . . . 93

DHCPv6 . . . . . . . . . . . . . . . . . . . . . . . 93

Quality of Service (QoS) Features . . . . . . . . . . . . 94

Differentiated Services (DiffServ) . . . . . . . . . 94

Class Of Service (CoS) . . . . . . . . . . . . . . . 94

Auto Voice over IP (VoIP). . . . . . . . . . . . . . 94

Internet Small Computer System Interface (iSCSI)

Optimization. . . . . . . . . . . . . . . . . . . . . 95

Layer-2 Multicast Features . . . . . . . . . . . . . . . 95

MAC Multicast Support. . . . . . . . . . . . . . . 95

IGMP Snooping . . . . . . . . . . . . . . . . . . . 95

IGMP Snooping Querier . . . . . . . . . . . . . . 96

MLD Snooping . . . . . . . . . . . . . . . . . . . 96

Multicast VLAN Registration . . . . . . . . . . . . 96

Layer-3 Multicast Features . . . . . . . . . . . . . . . 97

Distance Vector Multicast Routing Protocol . . . . 97

Internet Group Management Protocol . . . . . . . 97

IGMP Proxy . . . . . . . . . . . . . . . . . . . . . 97

Protocol Independent Multicast—Dense Mode . . 97

Protocol Independent Multicast—Sparse Mode . 98

Protocol Independent Multicast—Source Specific

Multicast . . . . . . . . . . . . . . . . . . . . . . 98

Protocol Independent Multicast IPv6 Support . . . 98

MLD/MLDv2 (RFC2710/RFC3810) . . . . . . . . . . 98

3 Hardware Overview . . . . . . . . . . . . . . . . . 99

Dell EMC Networking N1100-ON Series Switch Hardware. . . . . . . . . . . . . . . . . . . . . . . . . 99

Contents 7

Front Panel . . . . . . . . . . . . . . . . . . . . . 99

Power Supply . . . . . . . . . . . . . . . . . . . . 102Ventilation System . . . . . . . . . . . . . . . . . 102

Thermal Shutdown . . . . . . . . . . . . . . . . . 102

LED Definitions . . . . . . . . . . . . . . . . . . . 102

Power Consumption for PoE Switches . . . . . . . 106Wall Installation . . . . . . . . . . . . . . . . . . . 107

Dell EMC Networking N1500 Series Switch Hardware. 109

Front Panel . . . . . . . . . . . . . . . . . . . . . 109

Back Panel . . . . . . . . . . . . . . . . . . . . . 112

LED Definitions . . . . . . . . . . . . . . . . . . . 114

Power Consumption for PoE Switches . . . . . . . 116

Dell EMC Networking N2000 Series Switch Hardware. 118

Front Panel . . . . . . . . . . . . . . . . . . . . . 118

Back Panel . . . . . . . . . . . . . . . . . . . . . 121

LED Definitions . . . . . . . . . . . . . . . . . . . 123

Power Consumption for PoE Switches . . . . . . . 126

Dell EMC Networking N2100-ON Series Switch Hardware . . . . . . . . . . . . . . . . . . . . . . . . . 128

Front Panel . . . . . . . . . . . . . . . . . . . . . 128

Back Panel . . . . . . . . . . . . . . . . . . . . . 130

LED Definitions . . . . . . . . . . . . . . . . . . . 130

Power Consumption for PoE Switches . . . . . . . 134

Dell EMC Networking N3000E-ON Series Switch Hardware . . . . . . . . . . . . . . . . . . . . . . . . . 136

Front Panel . . . . . . . . . . . . . . . . . . . . . 136

Back Panel . . . . . . . . . . . . . . . . . . . . . 142

LED Definitions . . . . . . . . . . . . . . . . . . . 144

Power Consumption for PoE Switches . . . . . . . 149

Dell EMC Networking N3100-ON Series Switch Hardware . . . . . . . . . . . . . . . . . . . . . . . . . 151

8 Contents

Front Panel . . . . . . . . . . . . . . . . . . . . . 151

Back Panel . . . . . . . . . . . . . . . . . . . . . 153

LED Definitions . . . . . . . . . . . . . . . . . . . 153

Power Consumption for PoE Switches . . . . . . . 158

PoE Power Budget Limit . . . . . . . . . . . . . . 160

Switch MAC Addresses . . . . . . . . . . . . . . . . . 161

4 Using Dell EMC OpenManage Switch Administrator . . . . . . . . . . . . . . . . . . . . . 163

About Dell EMC OpenManage Switch Administrator . 163

Starting the Application . . . . . . . . . . . . . . . . . 164

Understanding the Interface. . . . . . . . . . . . . . . 165

Using the Switch Administrator Buttons and Links. . . 167

Defining Fields . . . . . . . . . . . . . . . . . . . . . . 168

Understanding the Device View. . . . . . . . . . . . . 168

Using the Device View Port Features . . . . . . . 168

Using the Device View Switch Locator Feature . . 169

5 Using the Command-Line Interface . . . . 171

Accessing the Switch Through the CLI . . . . . . . . . 171

Console Connection . . . . . . . . . . . . . . . . 171

Telnet Connection . . . . . . . . . . . . . . . . . 172

Understanding Command Modes . . . . . . . . . . . . 173

Entering CLI Commands . . . . . . . . . . . . . . . . . 175

Using the Question Mark to Get Help . . . . . . . 175

Using Command Completion . . . . . . . . . . . . 176

Contents 9

Entering Abbreviated Commands . . . . . . . . . . 176

Negating Commands . . . . . . . . . . . . . . . . 176

Command Output Paging . . . . . . . . . . . . . . 176

Understanding Error Messages . . . . . . . . . . 177

Recalling Commands from the History Buffer . . . 177

6 Default Settings . . . . . . . . . . . . . . . . . . . 179

7 Setting the IP Address and Other Basic Network Information . . . . . . . . . . . . . . . 183

IP Address and Network Information Overview . . . . 183

What Is the Basic Network Information? . . . . . . 183

Why Is Basic Network Information Needed? . . . 184

How Is Basic Network Information Configured? . . 185

What Is Out-of-Band Management and In-Band

Management? . . . . . . . . . . . . . . . . . . . . 185

Default Network Information . . . . . . . . . . . . . . 188

Configuring Basic Network Information (Web) . . . . . 189

Out-of-Band Interface . . . . . . . . . . . . . . . 189

IP Interface Configuration (Default VLAN IP

Address). . . . . . . . . . . . . . . . . . . . . . . 190

Route Entry Configuration (Switch Default

Gateway) . . . . . . . . . . . . . . . . . . . . . . 192

Domain Name Server . . . . . . . . . . . . . . . . 194Default Domain Name . . . . . . . . . . . . . . . 195Host Name Mapping . . . . . . . . . . . . . . . . 196Dynamic Host Name Mapping . . . . . . . . . . . 197

Configuring Basic Network Information (CLI) . . . . . . 198

Enabling the DHCP Client on the OOB Port . . . . . 198

10 Contents

Enabling the DHCP Client on the Default VLAN . . 198

Managing DHCP Leases . . . . . . . . . . . . . . 199

Configuring Static Network Information on the OOB Port . . . . . . . . . . . . . . . . . . . . . . 200Configuring Static Network Information on the

Default VLAN . . . . . . . . . . . . . . . . . . . . 201

Configuring and Viewing Additional Network

Information . . . . . . . . . . . . . . . . . . . . . 202

Basic Network Information Configuration Examples. . 204

Configuring Network Information Using the OOB

Port . . . . . . . . . . . . . . . . . . . . . . . . . 204

Configuring Network Information Using the Serial

Interface . . . . . . . . . . . . . . . . . . . . . . 206

8 Stacking . . . . . . . . . . . . . . . . . . . . . . . . . 209

Stacking Overview. . . . . . . . . . . . . . . . . . . . 209

Dell EMC Networking Stacking Compatibility . . . 213

How is the Stack Master Selected? . . . . . . . . 214

Adding a Switch to the Stack. . . . . . . . . . . . 215

Removing a Switch from the Stack . . . . . . . . . 216

How is the Firmware Updated on the Stack? . . . 217

What is Stacking Standby? . . . . . . . . . . . . . 217

What is Nonstop Forwarding? . . . . . . . . . . . 218

Switch Stack MAC Addressing and Stack Design

Considerations . . . . . . . . . . . . . . . . . . . 221

NSF Network Design Considerations . . . . . . . 221

Why is Stacking Needed? . . . . . . . . . . . . . 222

Default Stacking Values . . . . . . . . . . . . . . . . . 222

Managing and Monitoring the Stack (Web) . . . . . . 224

Unit Configuration . . . . . . . . . . . . . . . . . 224

Contents 11

Stack Summary . . . . . . . . . . . . . . . . . . . 225

Stack Firmware Synchronization . . . . . . . . . . 226

Supported Switches . . . . . . . . . . . . . . . . 227

Stack Port Summary . . . . . . . . . . . . . . . . 228

Stack Port Counters. . . . . . . . . . . . . . . . . 229

Stack Port Diagnostics . . . . . . . . . . . . . . . 229

NSF Summary . . . . . . . . . . . . . . . . . . . . 230

Checkpoint Statistics . . . . . . . . . . . . . . . . 231

Managing the Stack (CLI) . . . . . . . . . . . . . . . . 232

Configuring Stack Member, Stack Port, SFS and

NSF Settings . . . . . . . . . . . . . . . . . . . . 232

Viewing and Clearing Stacking and NSF

Information . . . . . . . . . . . . . . . . . . . . . 234

Connecting to the Management Console from a

Stack Member . . . . . . . . . . . . . . . . . . . 235

Stacking and NSF Usage Scenarios . . . . . . . . . . . 235

Basic Failover . . . . . . . . . . . . . . . . . . . . 235

Preconfiguring a Stack Member . . . . . . . . . . 237

NSF in the Data Center . . . . . . . . . . . . . . . 239NSF and VoIP . . . . . . . . . . . . . . . . . . . . 240NSF and DHCP Snooping . . . . . . . . . . . . . . 241NSF and the Storage Access Network . . . . . . . 242

NSF and Routed Access . . . . . . . . . . . . . . 244

9 Authentication, Authorization, and Accounting . . . . . . . . . . . . . . . . . . . . . . . 247

AAA Introduction . . . . . . . . . . . . . . . . . . . . . 247

Methods . . . . . . . . . . . . . . . . . . . . . . . 248

Method Lists . . . . . . . . . . . . . . . . . . . . 249

Access Lines . . . . . . . . . . . . . . . . . . . . 250

Enabling SSH Access . . . . . . . . . . . . . . . . 251

12 Contents

Access Lines (AAA) . . . . . . . . . . . . . . . . 251

Access Lines (Non-AAA) . . . . . . . . . . . . . . 252

Authentication . . . . . . . . . . . . . . . . . . . . . . 253

Authentication Access Types . . . . . . . . . . . 253

Authentication Manager . . . . . . . . . . . . . . 254

Using RADIUS. . . . . . . . . . . . . . . . . . . . 263Using TACACS+ Servers to Control Management

Access . . . . . . . . . . . . . . . . . . . . . . . 268

Dynamic ACL Overview . . . . . . . . . . . . . . . 270

Authentication Examples . . . . . . . . . . . . . . 277

Public Key SSH Authentication Example . . . . . . 285

Associating a User With an SSH Key . . . . . . . 294

Authorization. . . . . . . . . . . . . . . . . . . . . . . 296

Exec Authorization Capabilities . . . . . . . . . . 296

Authorization Examples. . . . . . . . . . . . . . . 298

RADIUS Change of Authorization. . . . . . . . . . 300

TACACS Authorization . . . . . . . . . . . . . . . 305

Accounting . . . . . . . . . . . . . . . . . . . . . . . . 309

RADIUS Accounting . . . . . . . . . . . . . . . . 309

IEEE 802.1X . . . . . . . . . . . . . . . . . . . . . . . . 312

What is IEEE 802.1X? . . . . . . . . . . . . . . . . 312

What are the 802.1X Port Authentication Modes? . 313

What are Authentication Host Modes . . . . . . . 314

What is MAC Authentication Bypass? . . . . . . . 315

What is the Role of 802.1X in VLAN Assignment? . 317

What is Monitor Mode? . . . . . . . . . . . . . . 321

How Does the Authentication Server Assign

DiffServ Policy or ACLs? . . . . . . . . . . . . . . 323

What is the Internal Authentication Server? . . . . 323

Default 802.1X Values . . . . . . . . . . . . . . . . 323

Configuring IEEE 802.1X (Web) . . . . . . . . . . . 324

Contents 13

Captive Portal . . . . . . . . . . . . . . . . . . . . . . 348

Captive Portal Overview . . . . . . . . . . . . . . 348

Default Captive Portal Behavior and Settings . . . 356Configuring Captive Portal (Web) . . . . . . . . . . 358Configuring Captive Portal (CLI) . . . . . . . . . . 374Captive Portal Configuration Example . . . . . . . 380In Case Of Problems in Captive Portal Deployment 384

10 Monitoring and Logging System Information . . . . . . . . . . . . . . . . . . . . . . . 385

System Monitoring Overview . . . . . . . . . . . . . . 385

What System Information Is Monitored? . . . . . . 385

Why Is System Information Needed?. . . . . . . . 386

Where Are Log Messages Sent? . . . . . . . . . . 386

What Are the Severity Levels? . . . . . . . . . . . 387What Are the System Startup and Operation Logs? 387

What Is the Log Message Format? . . . . . . . . . 388

What Factors Should Be Considered When

Configuring Logging? . . . . . . . . . . . . . . . . 390

Default Log Settings . . . . . . . . . . . . . . . . . . . 391

Monitoring System Information and Configuring Logging (Web) . . . . . . . . . . . . . . . . . . . . . . 392

Device Information . . . . . . . . . . . . . . . . . 392

System Health . . . . . . . . . . . . . . . . . . . . 394System Resources . . . . . . . . . . . . . . . . . 395Unit Power Usage History . . . . . . . . . . . . . 396Integrated Cable Test for Copper Cables . . . . . . 397Optical Transceiver Diagnostics . . . . . . . . . . 398

Log Global Settings . . . . . . . . . . . . . . . . . 399

RAM Log . . . . . . . . . . . . . . . . . . . . . . 400

Log File . . . . . . . . . . . . . . . . . . . . . . . 402

14 Contents

SYSLOG Server . . . . . . . . . . . . . . . . . . . 402

Email Alert Global Configuration . . . . . . . . . . 405

Email Alert Mail Server Configuration . . . . . . . 405

Email Alert Subject Configuration . . . . . . . . . 407

Email Alert To Address Configuration . . . . . . . 408

Email Alert Statistics . . . . . . . . . . . . . . . . 408

Monitoring System Information and Configuring Logging (CLI) . . . . . . . . . . . . . . . . . . . . . . . 410

Viewing System Information and Enabling the

Locator LED . . . . . . . . . . . . . . . . . . . . . 410

Running Cable Diagnostics . . . . . . . . . . . . . 410

Configuring Local Logging . . . . . . . . . . . . . 412Configuring Remote Logging . . . . . . . . . . . . 413

Configuring Mail Server Settings . . . . . . . . . . 414Configuring Email Alerts for Log Messages . . . . 415

Logging Configuration Examples . . . . . . . . . . . . 417

Configuring Local and Remote Logging . . . . . . 417

Configuring Email Alerting . . . . . . . . . . . . . 420

11 Managing General System Settings . . . 423

System Settings Overview. . . . . . . . . . . . . . . . 423

Why Does System Information Need to Be

Configured? . . . . . . . . . . . . . . . . . . . . . 425

What Are SDM Templates? . . . . . . . . . . . . 425

Why is the System Time Needed? . . . . . . . . . 428

How Does SNTP Work? . . . . . . . . . . . . . . 428

What Configuration Is Required for Plug-In

Modules? . . . . . . . . . . . . . . . . . . . . . . 429

Default General System Information . . . . . . . . . . 429

Configuring General System Settings (Web) . . . . . . 430

Contents 15

System Information . . . . . . . . . . . . . . . . . 430

CLI Banner . . . . . . . . . . . . . . . . . . . . . 433SDM Template Preference . . . . . . . . . . . . . 434Clock . . . . . . . . . . . . . . . . . . . . . . . . 435SNTP Global Settings . . . . . . . . . . . . . . . . 436SNTP Authentication . . . . . . . . . . . . . . . . 437SNTP Server . . . . . . . . . . . . . . . . . . . . 439

Summer Time Configuration . . . . . . . . . . . . 442Time Zone Configuration . . . . . . . . . . . . . . 443

Card Configuration . . . . . . . . . . . . . . . . . 444Slot Summary . . . . . . . . . . . . . . . . . . . . 445Supported Cards . . . . . . . . . . . . . . . . . . 446Power Over Ethernet Global Configuration . . . . . 447Power Over Ethernet Unit Configuration . . . . . . 448Power Over Ethernet Interface Configuration . . . 449

Configuring System Settings (CLI) . . . . . . . . . . . . 451

Configuring System Information . . . . . . . . . . 451

Configuring the Banner . . . . . . . . . . . . . . . 452Managing the SDM Template . . . . . . . . . . . 453Configuring SNTP Authentication and an SNTP

Server . . . . . . . . . . . . . . . . . . . . . . . . 453

Setting the System Time and Date Manually . . . . 455Configuring the Expansion Slots . . . . . . . . . . 456

Viewing Slot Information . . . . . . . . . . . . . . 457

Configuring PoE Settings . . . . . . . . . . . . . . 457

General System Settings Configuration Examples . . . 459

Configuring System and Banner Information . . . . 459

Configuring SNTP . . . . . . . . . . . . . . . . . . 462Configuring the Time Manually . . . . . . . . . . . 464

12 SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . 465

SNMP Overview . . . . . . . . . . . . . . . . . . . . . 465

16 Contents

What Is SNMP? . . . . . . . . . . . . . . . . . . . 465

What Are SNMP Traps? . . . . . . . . . . . . . . 466

Why Is SNMP Needed? . . . . . . . . . . . . . . 467

Default SNMP Values . . . . . . . . . . . . . . . . . . 467

Configuring SNMP (Web) . . . . . . . . . . . . . . . . 469

SNMP Global Parameters . . . . . . . . . . . . . 469

SNMP View Settings . . . . . . . . . . . . . . . . 470Access Control Group . . . . . . . . . . . . . . . 472SNMPv3 User Security Model (USM) . . . . . . . 474Communities . . . . . . . . . . . . . . . . . . . . 477Notification Filter . . . . . . . . . . . . . . . . . . 479Notification Recipients . . . . . . . . . . . . . . . 480

Trap Flags . . . . . . . . . . . . . . . . . . . . . . 482

OSPFv2 Trap Flags . . . . . . . . . . . . . . . . . 483

OSPFv3 Trap Flags . . . . . . . . . . . . . . . . . 484

Trap Log. . . . . . . . . . . . . . . . . . . . . . . 485

Configuring SNMP (CLI) . . . . . . . . . . . . . . . . . 487

Configuring the SNMPv3 Engine ID . . . . . . . . 487

Configuring SNMP Views, Groups, and Users . . . 488

Configuring Communities . . . . . . . . . . . . . . 491

Configuring SNMP Notifications (Traps andInforms) . . . . . . . . . . . . . . . . . . . . . . . 493

SNMP Configuration Examples . . . . . . . . . . . . . 496

Configuring SNMPv1 and SNMPv2. . . . . . . . . 496

Configuring SNMP Management Station Access . 497

Configuring SNMPv3 . . . . . . . . . . . . . . . . 498

13 Images and File Management . . . . . . . . 503

Image and File Management Overview . . . . . . . . . 503

What Files Can Be Managed? . . . . . . . . . . . 503

Contents 17

Why Is File Management Needed? . . . . . . . . . 505

What Methods Are Supported for File

Management? . . . . . . . . . . . . . . . . . . . . 508

What Factors Should Be Considered When

Managing Files?. . . . . . . . . . . . . . . . . . . 509

How Is the Running Configuration Saved? . . . . . 511

Managing Images and Files (Web) . . . . . . . . . . . 512

File System . . . . . . . . . . . . . . . . . . . . . 512

Active Images . . . . . . . . . . . . . . . . . . . . 513USB Flash Drive . . . . . . . . . . . . . . . . . . . 514File Download . . . . . . . . . . . . . . . . . . . . 515File Upload . . . . . . . . . . . . . . . . . . . . . 517Copy Files . . . . . . . . . . . . . . . . . . . . . . 519

Managing Images and Files (CLI) . . . . . . . . . . . . 520

Downloading and Activating a New Image (TFTP) . 521

Managing Files in Internal Flash . . . . . . . . . . 522Managing Files on a USB Flash Device . . . . . . 523Uploading a Configuration File (SCP) . . . . . . . . 524

Managing Configuration Scripts (SFTP) . . . . . . 525SCP Server . . . . . . . . . . . . . . . . . . . . . 526

File and Image Management Configuration Examples . 527

Upgrading the Firmware . . . . . . . . . . . . . . 527

Managing Configuration Scripts . . . . . . . . . . 530

Managing Files by Using the USB Flash Drive . . . 532

14 DHCP and USB Auto-Configuration . . . . 535

Auto Configuration Overview . . . . . . . . . . . . . . 535

What Is USB Auto Configuration? . . . . . . . . . 536

What Files Does USB Auto Configuration Use? . . 536

How Does USB Auto Configuration Use the Files

18 Contents

on the USB Device? . . . . . . . . . . . . . . . . 537

What Is the Setup File Format? . . . . . . . . . . . 539

What Is the DHCP Auto Configuration Process? . . 539

Monitoring and Completing the DHCP Auto

Configuration Process . . . . . . . . . . . . . . . 545

What Are the Dependencies for DHCP Auto

Configuration? . . . . . . . . . . . . . . . . . . . 546

Default Auto Configuration Values . . . . . . . . . . . 548

Managing Auto Configuration (Web) . . . . . . . . . . 549

Auto-Install Configuration . . . . . . . . . . . . . 549

Managing Auto Configuration (CLI) . . . . . . . . . . . 550

Managing Auto Configuration . . . . . . . . . . . 550

Auto Configuration Example. . . . . . . . . . . . . . . 551

Enabling USB Auto Configuration and Auto Image

Download . . . . . . . . . . . . . . . . . . . . . . 551

Enabling DHCP Auto Configuration and Auto

Image Download . . . . . . . . . . . . . . . . . . 552

Easy Firmware Upgrade/Downgrade via USB . . . 554

15 Monitoring Switch Traffic . . . . . . . . . . . 555

Traffic Monitoring Overview . . . . . . . . . . . . . . 555

What is sFlow Technology? . . . . . . . . . . . . 555

What is RMON? . . . . . . . . . . . . . . . . . . . 558

What is Port Mirroring?. . . . . . . . . . . . . . . 559

Port Mirroring Behaviors . . . . . . . . . . . . . . 561

RSPAN . . . . . . . . . . . . . . . . . . . . . . . 563

Remote Capture. . . . . . . . . . . . . . . . . . . 564

Why is Traffic Monitoring Needed? . . . . . . . . 565

Default Traffic Monitoring Values. . . . . . . . . . . . 565

Contents 19

Monitoring Switch Traffic (Web) . . . . . . . . . . . . 566

sFlow Agent Summary . . . . . . . . . . . . . . . 566

sFlow Receiver Configuration . . . . . . . . . . . 567sFlow Sampler Configuration . . . . . . . . . . . . 568sFlow Poll Configuration . . . . . . . . . . . . . . 569Interface Statistics . . . . . . . . . . . . . . . . . 570Etherlike Statistics . . . . . . . . . . . . . . . . . 571GVRP Statistics . . . . . . . . . . . . . . . . . . . 572EAP Statistics . . . . . . . . . . . . . . . . . . . . 573Utilization Summary . . . . . . . . . . . . . . . . . 574Counter Summary . . . . . . . . . . . . . . . . . . 575Switchport Statistics . . . . . . . . . . . . . . . . 576RMON Statistics . . . . . . . . . . . . . . . . . . 577RMON History Control Statistics . . . . . . . . . . 577

RMON History Table . . . . . . . . . . . . . . . . 580RMON Event Control . . . . . . . . . . . . . . . . 581RMON Event Log . . . . . . . . . . . . . . . . . . 583RMON Alarms . . . . . . . . . . . . . . . . . . . . 584Port Statistics . . . . . . . . . . . . . . . . . . . . 586LAG Statistics . . . . . . . . . . . . . . . . . . . . 587Port Mirroring . . . . . . . . . . . . . . . . . . . . 588

Monitoring Switch Traffic (CLI) . . . . . . . . . . . . . 590

Configuring sFlow . . . . . . . . . . . . . . . . . . 590

Configuring RMON . . . . . . . . . . . . . . . . . 592

Viewing Statistics . . . . . . . . . . . . . . . . . . 594

Configuring Port Mirroring . . . . . . . . . . . . . 595

Configuring RSPAN . . . . . . . . . . . . . . . . . 596

Traffic Monitoring Examples . . . . . . . . . . . . . . 600

Showing Interface Traffic. . . . . . . . . . . . . . 600

Configuring sFlow . . . . . . . . . . . . . . . . . . 601

Configuring RMON . . . . . . . . . . . . . . . . . 603Configuring Remote Capture . . . . . . . . . . . . 604Configuring RSPAN . . . . . . . . . . . . . . . . . 609

20 Contents

16 iSCSI Optimization . . . . . . . . . . . . . . . . . 613

iSCSI Optimization Overview . . . . . . . . . . . . . . 613

What Does iSCSI Optimization Do?. . . . . . . . . 613

What Occurs When iSCSI Optimization Is Enabled

or Disabled? . . . . . . . . . . . . . . . . . . . . 614

How Does the Switch Detect iSCSI Traffic Flows? 614

How Is Quality of Service Applied to iSCSI Traffic

Flows?. . . . . . . . . . . . . . . . . . . . . . . . 614

How Does iSCSI Optimization Use ACLs? . . . . . 615

What Information Does the Switch Track in iSCSI

Traffic Flows? . . . . . . . . . . . . . . . . . . . . 615

How Does iSCSI Optimization Interact With Dell

EqualLogic and Compellent Arrays? . . . . . . . . 616

How Does iSCSI Optimization Interact with Other

SAN Arrays? . . . . . . . . . . . . . . . . . . . . 616

Default iSCSI Optimization Values . . . . . . . . . . . 617

Configuring iSCSI Optimization (Web) . . . . . . . . . 618

iSCSI Global Configuration . . . . . . . . . . . . . 618

Configuring iSCSI Optimization (CLI) . . . . . . . . . . 619

iSCSI Optimization Configuration Examples . . . . . . 620

Configuring iSCSI Optimization Between Servers

and a Disk Array . . . . . . . . . . . . . . . . . . 620

17 Port Characteristics . . . . . . . . . . . . . . . 623

Port Overview . . . . . . . . . . . . . . . . . . . . . . 623

What Physical Port Characteristics Can Be

Configured? . . . . . . . . . . . . . . . . . . . . . 623

Auto-Negotiation . . . . . . . . . . . . . . . . . . 625Maximum Transmission Unit . . . . . . . . . . . . 625

Contents 21

What is Link Dependency? . . . . . . . . . . . . . 626

What Interface Types are Supported? . . . . . . . 628What is Interface Configuration Mode? . . . . . . 628

What Are the Green Ethernet Features? . . . . . . 630

Switchport Modes . . . . . . . . . . . . . . . . . 631

Default Port Values . . . . . . . . . . . . . . . . . . . 632

Configuring Port Characteristics (Web) . . . . . . . . . 634

Port Configuration. . . . . . . . . . . . . . . . . . 634

Link Dependency Configuration . . . . . . . . . . 637

Link Dependency Summary . . . . . . . . . . . . . 639

Port Green Ethernet Configuration . . . . . . . . . 640

Port Green Ethernet Statistics . . . . . . . . . . . 641

Port Green Ethernet LPI History . . . . . . . . . . 643

Configuring Port Characteristics (CLI). . . . . . . . . . 644

Configuring Port Settings . . . . . . . . . . . . . . 644

Configuring Link Dependencies . . . . . . . . . . 646Configuring Green Features . . . . . . . . . . . . 647

Port Configuration Examples . . . . . . . . . . . . . . 648

Configuring Port Settings . . . . . . . . . . . . . . 648

Configuring a Link Dependency Groups . . . . . . 649Configuring a Port in Access Mode . . . . . . . . 649

Configuring a Port in Trunk Mode . . . . . . . . . 650

Configuring a Port in General Mode . . . . . . . . 653

18 Port and System Security . . . . . . . . . . . 655

Port Security . . . . . . . . . . . . . . . . . . . . . . . 655

Denial of Service . . . . . . . . . . . . . . . . . . . . . 662

22 Contents

19 Access Control Lists . . . . . . . . . . . . . . . 663

ACL Overview . . . . . . . . . . . . . . . . . . . . . . 663

ACL Counters . . . . . . . . . . . . . . . . . . . . 665

What Are MAC ACLs? . . . . . . . . . . . . . . . 665

What Are IP ACLs? . . . . . . . . . . . . . . . . . 666

ACL Actions . . . . . . . . . . . . . . . . . . . . . 666

What Is the ACL Redirect Function? . . . . . . . . 667

What Is the ACL Mirror Function? . . . . . . . . . 668

What Is ACL Logging . . . . . . . . . . . . . . . . 668

What Are Time-Based ACLs? . . . . . . . . . . . 668

ACL Limitations . . . . . . . . . . . . . . . . . . . 669

ACL Configuration Details . . . . . . . . . . . . . . . . 674

How Are ACLs Configured?. . . . . . . . . . . . . 674

Editing Access Lists . . . . . . . . . . . . . . . . 674

Preventing False ACL Matches . . . . . . . . . . . 674

Using IP and MAC Address Masks . . . . . . . . . 676

Policy-Based Routing . . . . . . . . . . . . . . . . . . 677

Packet Classification . . . . . . . . . . . . . . . . 677

Route-Map Processing . . . . . . . . . . . . . . . 678

Route-Map Actions . . . . . . . . . . . . . . . . . 679

ACLs and Policy Interaction . . . . . . . . . . . . 681

Limitations . . . . . . . . . . . . . . . . . . . . . 682

Configuring ACLs (Web) . . . . . . . . . . . . . . . . . 685

IP ACL Configuration . . . . . . . . . . . . . . . . 685

IP ACL Rule Configuration . . . . . . . . . . . . . 688MAC ACL Configuration . . . . . . . . . . . . . . 690

MAC ACL Rule Configuration . . . . . . . . . . . . 692IPv6 ACL Configuration . . . . . . . . . . . . . . . 693IPv6 ACL Rule Configuration . . . . . . . . . . . . 694

ACL Binding Configuration . . . . . . . . . . . . . 696Time Range Configuration . . . . . . . . . . . . . 697

Contents 23

Configuring ACLs (CLI) . . . . . . . . . . . . . . . . . . 699

Configuring an IPv4 ACL . . . . . . . . . . . . . . 699

Configuring a MAC ACL . . . . . . . . . . . . . . . 705Configuring an IPv6 ACL . . . . . . . . . . . . . . 709Configuring a Time Range . . . . . . . . . . . . . 712

ACL Configuration Examples. . . . . . . . . . . . . . . 714

Basic Rules . . . . . . . . . . . . . . . . . . . . . 714

Internal System ACLs . . . . . . . . . . . . . . . . 715

Complete ACL Example . . . . . . . . . . . . . . . 716Advanced Examples . . . . . . . . . . . . . . . . 720Policy-Based Routing Examples . . . . . . . . . . 732

20 VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . 737

VLAN Overview . . . . . . . . . . . . . . . . . . . . . 737

VLAN Tagging . . . . . . . . . . . . . . . . . . . . 740

GVRP . . . . . . . . . . . . . . . . . . . . . . . . 741

Double-VLAN Tagging . . . . . . . . . . . . . . . 742

Voice VLAN . . . . . . . . . . . . . . . . . . . . . 743

Private VLANs . . . . . . . . . . . . . . . . . . . . 749

Additional VLAN Features . . . . . . . . . . . . . 755

Default VLAN Behavior . . . . . . . . . . . . . . . . . 756

Configuring VLANs (Web) . . . . . . . . . . . . . . . . 758

VLAN Membership . . . . . . . . . . . . . . . . . 758

VLAN Port Settings . . . . . . . . . . . . . . . . . 763VLAN LAG Settings . . . . . . . . . . . . . . . . . 764

Bind MAC to VLAN . . . . . . . . . . . . . . . . . 766Bind IP Subnet to VLAN . . . . . . . . . . . . . . . 766

GVRP Parameters . . . . . . . . . . . . . . . . . . 768Protocol Group . . . . . . . . . . . . . . . . . . . 770

Adding a Protocol Group . . . . . . . . . . . . . . 771

24 Contents

Double VLAN Global Configuration . . . . . . . . . 773Double VLAN Interface Configuration . . . . . . . 774Voice VLAN . . . . . . . . . . . . . . . . . . . . . 776

Configuring VLANs (CLI) . . . . . . . . . . . . . . . . . 777

Creating a VLAN . . . . . . . . . . . . . . . . . . 777

Configuring VLAN Settings for a LAG . . . . . . . 778Configuring Double VLAN Tagging . . . . . . . . . 779Configuring MAC-Based VLANs . . . . . . . . . . 782

Configuring IP-Based VLANs . . . . . . . . . . . . 784Configuring a Protocol-Based VLAN . . . . . . . . 786Configuring GVRP . . . . . . . . . . . . . . . . . . 789Configuring Voice VLANs . . . . . . . . . . . . . . 791Configuring a Voice VLAN (Extended Example) . . 793

Enterprise Voice VLAN Configuration With QoS . . 794

MLAG with RPVST and Voice VLAN . . . . . . . . 797

Assigning an 802.1p Priority to VLAN Traffic . . . . 804

Configuring a Private VLAN . . . . . . . . . . . . 805

Configuring Inter-Switch Private VLANs . . . . . . 807

VLAN Configuration Examples . . . . . . . . . . . . . 808

Configuring VLANs Using the Dell EMC

OpenManage Switch Administrator . . . . . . . . 808

Configuring VLANs Using the CLI. . . . . . . . . . 816

21 Spanning Tree Protocol . . . . . . . . . . . . . 821

STP Overview . . . . . . . . . . . . . . . . . . . . . . 821

What Are Classic STP, Multiple STP, and Rapid

STP?. . . . . . . . . . . . . . . . . . . . . . . . . 821

How Does STP Work? . . . . . . . . . . . . . . . 822

How Does MSTP Operate in the Network? . . . . 823MSTP with Multiple Forwarding Paths . . . . . . . 827MSTP and VLAN IDs . . . . . . . . . . . . . . . . 828

Contents 25

What are the Optional STP Features? . . . . . . . 828

RSTP-PV . . . . . . . . . . . . . . . . . . . . . . . . . 830

DirectLink Rapid Convergence . . . . . . . . . . . 832

IndirectLink Rapid Convergence Feature . . . . . . 834Interoperability Between STP-PV and RSTP-PV

Modes . . . . . . . . . . . . . . . . . . . . . . . . 836

Interoperability With IEEE Spanning Tree

Protocols . . . . . . . . . . . . . . . . . . . . . . 836

Configuration Examples . . . . . . . . . . . . . . . 841

Default STP Values. . . . . . . . . . . . . . . . . . . . 842

Configuring Spanning Tree (Web) . . . . . . . . . . . . 843

STP Global Settings . . . . . . . . . . . . . . . . . 843

STP Port Settings . . . . . . . . . . . . . . . . . . 845STP LAG Settings . . . . . . . . . . . . . . . . . . 847Rapid Spanning Tree . . . . . . . . . . . . . . . . 848

MSTP Settings . . . . . . . . . . . . . . . . . . . 850MSTP Interface Settings . . . . . . . . . . . . . . 852PVST/RPVST Global Configuration . . . . . . . . . 853PVST/RPVST VLAN Configuration . . . . . . . . . 854PVST/RPVST Interface Configuration . . . . . . . 856PVST/RPVST Statistics . . . . . . . . . . . . . . . 857

Configuring Spanning Tree (CLI) . . . . . . . . . . . . . 858

Configuring Global STP Bridge Settings . . . . . . 858

Configuring Optional STP Features . . . . . . . . . 859

Configuring STP Interface Settings . . . . . . . . . 860

Configuring MSTP Switch Settings . . . . . . . . . 861

Configuring MSTP Interface Settings . . . . . . . 862

STP Configuration Examples. . . . . . . . . . . . . . . 863

STP Configuration Example . . . . . . . . . . . . . 863

MSTP Configuration Example. . . . . . . . . . . . 865

RSTP-PV Access Switch Configuration Example . 868

26 Contents

22 Discovering Network Devices . . . . . . . . 873

Device Discovery Overview . . . . . . . . . . . . . . . 873

What Is ISDP? . . . . . . . . . . . . . . . . . . . 873

What is IPDT? . . . . . . . . . . . . . . . . . . . . 873

What is LLDP? . . . . . . . . . . . . . . . . . . . 874

What is LLDP-MED? . . . . . . . . . . . . . . . . 874

Why are Device Discovery Protocols Needed? . . 874

Default IDSP and LLDP Values . . . . . . . . . . . . . 875

Default IPDT Values . . . . . . . . . . . . . . . . . . . 876

Configuring ISDP and LLDP (Web) . . . . . . . . . . . 877

ISDP Global Configuration . . . . . . . . . . . . . 877

ISDP Neighbor Table . . . . . . . . . . . . . . . . 879

ISDP Interface Configuration . . . . . . . . . . . . 880ISDP Statistics . . . . . . . . . . . . . . . . . . . 881LLDP Configuration . . . . . . . . . . . . . . . . . 882LLDP Statistics . . . . . . . . . . . . . . . . . . . 884LLDP Connections . . . . . . . . . . . . . . . . . 885LLDP-MED Global Configuration . . . . . . . . . . 886

LLDP-MED Interface Configuration . . . . . . . . 887LLDP-MED Local Device Information . . . . . . . 888LLDP-MED Remote Device Information . . . . . . 888

Configuring ISDP and LLDP (CLI) . . . . . . . . . . . . 889

Configuring Global ISDP Settings . . . . . . . . . 889

Enabling ISDP on a Port . . . . . . . . . . . . . . 890Viewing and Clearing ISDP Information . . . . . . 890

Configuring Global LLDP Settings . . . . . . . . . 891Configuring Port-based LLDP Settings . . . . . . . 891

Viewing and Clearing LLDP Information . . . . . . 892

Configuring LLDP-MED Settings . . . . . . . . . . 893Viewing LLDP-MED Information . . . . . . . . . . 894

Contents 27

Device Discovery Configuration Examples . . . . . . . 894

Configuring ISDP . . . . . . . . . . . . . . . . . . 894

Configuring LLDP . . . . . . . . . . . . . . . . . . 895

Configuring IPDT . . . . . . . . . . . . . . . . . . 897

23 Port-Based Traffic Control . . . . . . . . . . 899

Port-Based Traffic Control Overview . . . . . . . . . . 899

What is Flow Control?. . . . . . . . . . . . . . . . 900

What is Storm Control? . . . . . . . . . . . . . . . 900

What are Protected Ports? . . . . . . . . . . . . . 901

What is Error Recovery? . . . . . . . . . . . . . . 901

What is Link Local Protocol Filtering? . . . . . . . 901

What is Loop Protection? . . . . . . . . . . . . . . 903

Default Port-Based Traffic Control Values . . . . . . . 904

Configuring Port-Based Traffic Control (Web) . . . . . 905

Flow Control (Global Port Parameters) . . . . . . . 905

Storm Control . . . . . . . . . . . . . . . . . . . . 906Protected Port Configuration . . . . . . . . . . . . 908LLPF Configuration . . . . . . . . . . . . . . . . . 910

Configuring Port-Based Traffic Control (CLI) . . . . . . 911

Configuring Flow Control and Storm Control . . . . 911

Configuring Protected Ports . . . . . . . . . . . . 912

Configuring LLPF . . . . . . . . . . . . . . . . . . 913

Port-Based Traffic Control Configuration Example . . . 914

24 Layer-2 Multicast Features . . . . . . . . . . 917

L2 Multicast Overview . . . . . . . . . . . . . . . . . . 917

Multicast Flooding and Forwarding. . . . . . . . . 917

28 Contents

What Are the Multicast Bridging Features? . . . . 918

What Is L2 Multicast Traffic? . . . . . . . . . . . . 919What Is IGMP Snooping? . . . . . . . . . . . . . . 919

What Is MLD Snooping? . . . . . . . . . . . . . . 921

What Is Multicast VLAN Registration? . . . . . . . 923

When Are Layer-3 Multicast Features Required? . 924

What Are GARP and GMRP? . . . . . . . . . . . . 924

Snooping Switch Restrictions. . . . . . . . . . . . . . 926

MAC Address-Based Multicast Group . . . . . . . 926

Topologies Where the Multicast Source Is Not

Directly Connected to the Querier . . . . . . . . . 926

Using Static Multicast MAC Configuration . . . . . 926

IGMP Snooping and GMRP . . . . . . . . . . . . . 926

Default L2 Multicast Values . . . . . . . . . . . . . . . 927

Configuring L2 Multicast Features (Web) . . . . . . . . 929

Multicast Global Parameters . . . . . . . . . . . . 929

Bridge Multicast Group . . . . . . . . . . . . . . . 930MFDB Summary . . . . . . . . . . . . . . . . . . 933MRouter Status . . . . . . . . . . . . . . . . . . . 934General IGMP Snooping . . . . . . . . . . . . . . 935Global Querier Configuration . . . . . . . . . . . . 938VLAN Querier . . . . . . . . . . . . . . . . . . . . 939VLAN Querier Status . . . . . . . . . . . . . . . . 941MFDB IGMP Snooping Table . . . . . . . . . . . . 942MLD Snooping General . . . . . . . . . . . . . . . 943MLD Snooping Global Querier Configuration . . . 945

MLD Snooping VLAN Querier . . . . . . . . . . . 946MLD Snooping VLAN Querier Status . . . . . . . . 948MFDB MLD Snooping Table . . . . . . . . . . . . 949MVR Global Configuration . . . . . . . . . . . . . 950MVR Members . . . . . . . . . . . . . . . . . . . 951MVR Interface Configuration . . . . . . . . . . . . 951

Contents 29

MVR Statistics . . . . . . . . . . . . . . . . . . . 954GARP Timers . . . . . . . . . . . . . . . . . . . . 955GMRP Parameters . . . . . . . . . . . . . . . . . 957

MFDB GMRP Table . . . . . . . . . . . . . . . . . 959

Configuring L2 Multicast Features (CLI) . . . . . . . . . 960

Configuring Layer-2 Multicasting . . . . . . . . . . 960

Configuring IGMP Snooping on VLANs . . . . . . . 961

Configuring IGMP Snooping Querier . . . . . . . . 962

Configuring MLD Snooping on VLANs . . . . . . . 963

Configuring MLD Snooping Querier . . . . . . . . 964

Configuring MVR . . . . . . . . . . . . . . . . . . 965

Configuring GARP Timers and GMRP. . . . . . . . 967

Case Study on a Real-World Network Topology . . . . 968

Multicast Snooping Case Study . . . . . . . . . . 968

25 Snooping and Inspecting Traffic . . . . . . 973

Traffic Snooping and Inspection Overview . . . . . . . 973

What Is DHCP Snooping? . . . . . . . . . . . . . . 974How Is the DHCP Snooping Bindings Database

Populated? . . . . . . . . . . . . . . . . . . . . . 975

What Is IP Source Guard? . . . . . . . . . . . . . 978What is Dynamic ARP Inspection? . . . . . . . . . 979

Why Is Traffic Snooping and Inspection

Necessary? . . . . . . . . . . . . . . . . . . . . . 980

Default Traffic Snooping and Inspection Values . . . . 980

Configuring Traffic Snooping and Inspection (Web) . . 982

DHCP Snooping Configuration . . . . . . . . . . . 982

DHCP Snooping Interface Configuration . . . . . . 983DHCP Snooping VLAN Configuration . . . . . . . . 985DHCP Snooping Persistent Configuration . . . . . 986

30 Contents

DHCP Snooping Static Bindings Configuration . . 987DHCP Snooping Dynamic Bindings Summary . . . 988DHCP Snooping Statistics . . . . . . . . . . . . . 989IPSG Interface Configuration . . . . . . . . . . . . 990IPSG Binding Configuration . . . . . . . . . . . . 990

IPSG Binding Summary . . . . . . . . . . . . . . . 991DAI Global Configuration . . . . . . . . . . . . . . 992DAI Interface Configuration . . . . . . . . . . . . 993DAI VLAN Configuration . . . . . . . . . . . . . . 995DAI ACL Configuration . . . . . . . . . . . . . . . 996DAI ACL Rule Configuration . . . . . . . . . . . . 996

DAI Statistics . . . . . . . . . . . . . . . . . . . . 997

Configuring Traffic Snooping and Inspection (CLI) . . . 999

Configuring DHCP Snooping . . . . . . . . . . . . 999

Configuring IP Source Guard . . . . . . . . . . . 1001

Configuring Dynamic ARP Inspection . . . . . . 1002

Traffic Snooping and Inspection Configuration Examples . . . . . . . . . . . . . . . . . . . . . . . . 1005

Configuring DHCP Snooping . . . . . . . . . . . 1005

Configuring IPSG . . . . . . . . . . . . . . . . . 1007

26 Link Aggregation . . . . . . . . . . . . . . . . . 1009

Link Aggregation. . . . . . . . . . . . . . . . . . . . 1009

Overview . . . . . . . . . . . . . . . . . . . . . 1009

Default Link Aggregation Values . . . . . . . . . 1013

Configuring Link Aggregation (Web) . . . . . . . . . 1014

Configuring Link Aggregation (CLI) . . . . . . . . . . 1020

Link Aggregation Configuration Examples . . . . 1024

Multi-Switch LAG (MLAG) . . . . . . . . . . . . . . . 1027

Overview . . . . . . . . . . . . . . . . . . . . . 1027

Contents 31

Deployment Scenarios . . . . . . . . . . . . . . 1028Definitions . . . . . . . . . . . . . . . . . . . . . 1030Configuration Consistency . . . . . . . . . . . . 1031

Operation in the Network . . . . . . . . . . . . . 1034Layer-2 Configuration Steps . . . . . . . . . . . 1038

Switch Firmware Upgrade Procedure . . . . . . 1041

Static Routing on MLAG Interfaces. . . . . . . . 1042

Caveats and Limitations. . . . . . . . . . . . . . 1049

Basic Configuration Example . . . . . . . . . . . 1055A Complete MLAG Example. . . . . . . . . . . . 1063

27 MAC Addressing and Forwarding . . . . 1081

MAC Address Table Overview. . . . . . . . . . . . . 1081

How Is the Address Table Populated? . . . . . . 1081

What Information Is in the MAC Address Table? 1082

How Is the MAC Address Table Maintained

Across a Stack? . . . . . . . . . . . . . . . . . . 1082

Default MAC Address Table Values . . . . . . . . . . 1082

Managing the MAC Address Table (Web) . . . . . . . 1083

Static Address Table . . . . . . . . . . . . . . . 1083

Global Address Table . . . . . . . . . . . . . . . 1085

Managing the MAC Address Table (CLI) . . . . . . . 1086

Managing the MAC Address Table . . . . . . . . 1086

28 DHCP Server Settings . . . . . . . . . . . . . 1089

DHCP Overview . . . . . . . . . . . . . . . . . . . . 1089

How Does DHCP Work?. . . . . . . . . . . . . . 1090

What are DHCP Options? . . . . . . . . . . . . . 1091

What Additional DHCP Features Does the Switch

32 Contents

Support? . . . . . . . . . . . . . . . . . . . . . 1091

Default DHCP Server Values. . . . . . . . . . . . . . 1092

Configuring the DHCP Server (Web). . . . . . . . . . 1093

DHCP Server Network Properties . . . . . . . . 1093

Address Pool . . . . . . . . . . . . . . . . . . . 1095

Address Pool Options . . . . . . . . . . . . . . . 1099

DHCP Bindings . . . . . . . . . . . . . . . . . . 1101

DHCP Server Reset Configuration . . . . . . . . 1101

DHCP Server Conflicts Information. . . . . . . . 1102

DHCP Server Statistics . . . . . . . . . . . . . . 1103

Configuring the DHCP Server (CLI) . . . . . . . . . . 1104

Configuring Global DHCP Server Settings . . . . 1104

Configuring a Dynamic Address Pool . . . . . . 1105

Configuring a Static Address Pool . . . . . . . . 1106

Monitoring DHCP Server Information . . . . . . 1107

DHCP Server Configuration Examples . . . . . . . . 1108

Configuring a Dynamic Address Pool . . . . . . 1108

Configuring a Static Address Pool . . . . . . . . 1110

29 IP Routing . . . . . . . . . . . . . . . . . . . . . . 1113

IP Routing Overview . . . . . . . . . . . . . . . . . . 1113

Default IP Routing Values . . . . . . . . . . . . . . . 1115

IP Path MTU and Path MTU Discovery . . . . . . . . 1116

ARP Table . . . . . . . . . . . . . . . . . . . . . . . 1117

Configuring IP Routing Features (Web) . . . . . . . . 1118

IP Configuration. . . . . . . . . . . . . . . . . . 1118

IP Statistics . . . . . . . . . . . . . . . . . . . . 1119

Contents 33

ARP Create . . . . . . . . . . . . . . . . . . . . 1120ARP Table Configuration . . . . . . . . . . . . . 1121Router Discovery Configuration . . . . . . . . . 1122Router Discovery Status . . . . . . . . . . . . . 1123Route Table . . . . . . . . . . . . . . . . . . . . 1124Best Routes Table. . . . . . . . . . . . . . . . . 1125Route Entry Configuration. . . . . . . . . . . . . 1126Configured Routes . . . . . . . . . . . . . . . . 1128Route Preferences Configuration . . . . . . . . . 1129

Configuring IP Routing Features (CLI) . . . . . . . . . 1130

Configuring Global IP Routing Settings . . . . . . 1130

Configuring ARP Settings . . . . . . . . . . . . . 1131Configuring Router Discovery (IRDP) . . . . . . . 1132Configuring Route Table Entries and Route Preferences . . . . . . . . . . . . . . . . . . . . 1133

IP Routing Configuration Example . . . . . . . . . . . 1135

Configuring Dell EMC Networking N-Series Switch A. . . . . . . . . . . . . . . . . . . . . . 1136Configuring Dell EMC Networking N-Series Switch B. . . . . . . . . . . . . . . . . . . . . . 1137

30 Routing Interfaces . . . . . . . . . . . . . . . . 1139

Routing Interface Overview . . . . . . . . . . . . . . 1139

What Are VLAN Routing Interfaces? . . . . . . . 1139

What Are Loopback Interfaces? . . . . . . . . . 1140

What Are Tunnel Interfaces? . . . . . . . . . . . 1141

Why Are Routing Interfaces Needed? . . . . . . 1142

Default Routing Interface Values . . . . . . . . . . . 1144

Configuring Routing Interfaces (Web) . . . . . . . . . 1145

IP Interface Configuration . . . . . . . . . . . . 1145

34 Contents

DHCP Lease Parameters . . . . . . . . . . . . . 1146VLAN Routing Summary . . . . . . . . . . . . . 1146

Tunnel Configuration . . . . . . . . . . . . . . . 1147

Tunnels Summary. . . . . . . . . . . . . . . . . 1148

Loopbacks Configuration . . . . . . . . . . . . . 1149Loopbacks Summary . . . . . . . . . . . . . . . 1150

Configuring Routing Interfaces (CLI) . . . . . . . . . 1151

Configuring VLAN Routing Interfaces (IPv4) . . . 1151

Configuring Loopback Interfaces. . . . . . . . . 1153Configuring Tunnels . . . . . . . . . . . . . . . 1154

31 Layer-2 and Layer-3 Relay Features . . 1155

L2 and L3 Relay Overview . . . . . . . . . . . . . . . 1155

What Is L2 DHCP Relay? . . . . . . . . . . . . . 1155

What Is L3 DHCP Relay? . . . . . . . . . . . . . 1159

What Is the IP Helper Feature? . . . . . . . . . . 1160

Default L2/L3 Relay Values . . . . . . . . . . . . . . 1164

Configuring L2 and L3 Relay Features (Web) . . . . . 1165

L2 DHCP Relay Global Configuration . . . . . . . 1165

L2 DHCP Relay Interface Configuration . . . . . 1166L2 DHCP Relay Interface Statistics . . . . . . . . 1168L2 DHCP Relay VLAN Configuration . . . . . . . 1169DHCP Relay Agent Configuration . . . . . . . . . 1169

IP Helper (L3 DHCP Relay) Global Configuration . 1171IP Helper (L3 DHCP Relay) Interface Configuration . . . . . . . . . . . . . . . . . . . 1173IP Helper Statistics . . . . . . . . . . . . . . . . 1175

Configuring L2 and L3 Relay Features (CLI) . . . . . . 1176

Configuring L2 DHCP Relay . . . . . . . . . . . . 1176

Configuring L3 Relay (IP Helper) Settings . . . . 1178

Contents 35

Relay Agent Configuration Example . . . . . . . . . . 1180

32 OSPF and OSPFv3 . . . . . . . . . . . . . . . . . 1183

OSPF Overview. . . . . . . . . . . . . . . . . . . . . 1184

What Are OSPF Areas and Other OSPF Topology

Features? . . . . . . . . . . . . . . . . . . . . . 1184

What Are OSPF Routers and LSAs? . . . . . . . 1185How Are Routes Selected? . . . . . . . . . . . . 1185

How Are OSPF and OSPFv3 Different? . . . . . . 1185

OSPF Feature Details. . . . . . . . . . . . . . . . . . 1186

Stub Router . . . . . . . . . . . . . . . . . . . . 1186

Static Area Range Cost . . . . . . . . . . . . . . 1188

LSA Pacing . . . . . . . . . . . . . . . . . . . . 1189

Flood Blocking . . . . . . . . . . . . . . . . . . 1190

MTU . . . . . . . . . . . . . . . . . . . . . . . . 1191

Default OSPF Values . . . . . . . . . . . . . . . . . . 1192

Configuring OSPF Features (Web) . . . . . . . . . . . 1194

OSPF Configuration . . . . . . . . . . . . . . . . 1194

OSPF Area Configuration . . . . . . . . . . . . . 1195OSPF Stub Area Summary . . . . . . . . . . . . 1198OSPF Area Range Configuration . . . . . . . . . 1199OSPF Interface Statistics . . . . . . . . . . . . . 1200OSPF Interface Configuration. . . . . . . . . . . 1201OSPF Neighbor Table . . . . . . . . . . . . . . . 1202OSPF Neighbor Configuration . . . . . . . . . . 1203OSPF Link State Database . . . . . . . . . . . . 1204OSPF Virtual Link Configuration . . . . . . . . . 1204

OSPF Virtual Link Summary . . . . . . . . . . . . 1206OSPF Route Redistribution Configuration. . . . . 1207OSPF Route Redistribution Summary . . . . . . . 1208NSF OSPF Configuration . . . . . . . . . . . . . 1209

36 Contents

Configuring OSPFv3 Features (Web) . . . . . . . . . 1210

OSPFv3 Configuration . . . . . . . . . . . . . . 1210

OSPFv3 Area Configuration. . . . . . . . . . . . 1210

OSPFv3 Stub Area Summary . . . . . . . . . . . 1214OSPFv3 Area Range Configuration . . . . . . . . 1215OSPFv3 Interface Configuration . . . . . . . . . 1216OSPFv3 Interface Statistics . . . . . . . . . . . 1217OSPFv3 Neighbors . . . . . . . . . . . . . . . . 1218OSPFv3 Neighbor Table . . . . . . . . . . . . . 1219OSPFv3 Link State Database . . . . . . . . . . . 1220OSPFv3 Virtual Link Configuration . . . . . . . . 1221OSPFv3 Virtual Link Summary . . . . . . . . . . 1223OSPFv3 Route Redistribution Configuration . . . 1224OSPFv3 Route Redistribution Summary . . . . . 1225NSF OSPFv3 Configuration . . . . . . . . . . . . 1226

Configuring OSPF Features (CLI) . . . . . . . . . . . 1227

Configuring Global OSPF Settings . . . . . . . . 1227

Configuring OSPF Interface Settings . . . . . . . 1230Configuring Stub Areas and NSSAs . . . . . . . 1232

Configuring Virtual Links . . . . . . . . . . . . . 1234Configuring OSPF Area Range Settings . . . . . 1236Configuring NSF Settings for OSPF . . . . . . . . 1238

Configuring OSPFv3 Features (CLI) . . . . . . . . . . 1239

Configuring Global OSPFv3 Settings . . . . . . . 1239

Configuring OSPFv3 Interface Settings . . . . . 1241Configuring Stub Areas and NSSAs . . . . . . . 1243

Configuring Virtual Links . . . . . . . . . . . . . 1245Configuring an OSPFv3 Area Range . . . . . . . 1246Configuring OSPFv3 Route Redistribution Settings 1247Configuring NSF Settings for OSPFv3 . . . . . . 1248

OSPF Configuration Examples. . . . . . . . . . . . . 1249

Configuring an OSPF Border Router and Setting

Interface Costs . . . . . . . . . . . . . . . . . . 1249

Contents 37

Configuring Stub and NSSA Areas for OSPF and OSPFv3 . . . . . . . . . . . . . . . . . . . . . . 1252Configuring a Virtual Link for OSPF and OSPFv3 . 1255

Interconnecting an IPv4 Backbone and Local IPv6 Network . . . . . . . . . . . . . . . . . . . 1258Configuring the Static Area Range Cost . . . . . 1261

Configuring Flood Blocking . . . . . . . . . . . . 1266

Configuring OSPF VRFs . . . . . . . . . . . . . . . . 1271

33 VRF . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1275

VRF Resource Sharing . . . . . . . . . . . . . . . . . 1276

VRF ARP Entries . . . . . . . . . . . . . . . . . . 1276

VRF Route Entries . . . . . . . . . . . . . . . . . 1276

34 RIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1281

RIP Overview . . . . . . . . . . . . . . . . . . . . . . 1281

How Does RIP Determine Route Information? . . 1281

What Is Split Horizon? . . . . . . . . . . . . . . 1282

What RIP Versions Are Supported? . . . . . . . 1282

Default RIP Values . . . . . . . . . . . . . . . . . . . 1283

Configuring RIP Features (Web) . . . . . . . . . . . . 1284

RIP Configuration . . . . . . . . . . . . . . . . . 1284

RIP Interface Configuration . . . . . . . . . . . . 1285RIP Interface Summary . . . . . . . . . . . . . . 1286RIP Route Redistribution Configuration. . . . . . 1287RIP Route Redistribution Summary . . . . . . . . 1288

Configuring RIP Features (CLI) . . . . . . . . . . . . . 1289

Configuring Global RIP Settings . . . . . . . . . 1289

38 Contents

Configuring RIP Interface Settings . . . . . . . . 1290

Configuring Route Redistribution Settings . . . . 1291

RIP Configuration Example . . . . . . . . . . . . . . 1293

35 VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . 1297

VRRP Overview . . . . . . . . . . . . . . . . . . . . 1297

How Does VRRP Work?. . . . . . . . . . . . . . 1297

What Is the VRRP Router Priority? . . . . . . . . 1298

What Is VRRP Preemption?. . . . . . . . . . . . 1298

What Is VRRP Accept Mode? . . . . . . . . . . 1299

What Are VRRP Route and Interface Tracking? . 1299

VRRP and OSPF Interoperability . . . . . . . . . 1300

Default VRRP Values. . . . . . . . . . . . . . . . . . 1301

Configuring VRRP Features (Web). . . . . . . . . . . 1302

VRRP Configuration . . . . . . . . . . . . . . . . 1302

VRRP Virtual Router Status . . . . . . . . . . . . 1303VRRP Virtual Router Statistics . . . . . . . . . . 1304VRRP Router Configuration . . . . . . . . . . . . 1305VRRP Route Tracking Configuration . . . . . . . 1306VRRP Interface Tracking Configuration . . . . . 1308

Configuring VRRP Features (CLI) . . . . . . . . . . . 1310

Configuring VRRP Settings . . . . . . . . . . . . 1310

VRRP Configuration Example . . . . . . . . . . . . . 1312

VRRP with Load Sharing . . . . . . . . . . . . . 1312

Troubleshooting VRRP . . . . . . . . . . . . . . 1315

VRRP with Route and Interface Tracking . . . . 1316Configuring VRRP in a VRF . . . . . . . . . . . . 1319

Contents 39

36 BGP . . . . . . . . . . . . . . . . . . . . . . . . . . . 1323

Overview . . . . . . . . . . . . . . . . . . . . . . . . 1324

Autonomous Systems . . . . . . . . . . . . . . . 1326

Graceful Restart. . . . . . . . . . . . . . . . . . 1326

BGP Operations . . . . . . . . . . . . . . . . . . . . 1326

Decision Process Overview . . . . . . . . . . . 1326

Path Attributes . . . . . . . . . . . . . . . . . . 1328

BGP Finite State Machine (FSM) . . . . . . . . . 1331Detecting Loss of Adjacency . . . . . . . . . . . 1333Authentication . . . . . . . . . . . . . . . . . . 1334

Outbound Update Groups . . . . . . . . . . . . . 1334

Removing Private AS Numbers . . . . . . . . . . 1335

Templates . . . . . . . . . . . . . . . . . . . . . 1335

Resolving Interface Routes . . . . . . . . . . . . 1337

Originating BGP Routes . . . . . . . . . . . . . . 1337

Equal Cost Multipath (ECMP) . . . . . . . . . . . 1338

BGP Next-Hop Resolution . . . . . . . . . . . . 1339

Address Aggregation . . . . . . . . . . . . . . . 1341

Routing Policy . . . . . . . . . . . . . . . . . . . 1343

Inbound Policy . . . . . . . . . . . . . . . . . . 1344

Outbound Policy. . . . . . . . . . . . . . . . . . 1344

Routing Policy Changes . . . . . . . . . . . . . . 1345

BGP Timers . . . . . . . . . . . . . . . . . . . . 1346

Communities . . . . . . . . . . . . . . . . . . . 1347

Routing Table Overflow . . . . . . . . . . . . . . 1347

Route Reflection . . . . . . . . . . . . . . . . . 1348

VRF Support . . . . . . . . . . . . . . . . . . . . 1349

BGP Neighbor Configuration . . . . . . . . . . . 1349

Extended Communities . . . . . . . . . . . . . . 1349

VPNv4/VRF Route Distribution via MP-BGP . . . 1352

IPv6 . . . . . . . . . . . . . . . . . . . . . . . . 1355

40 Contents

BGP Limitations . . . . . . . . . . . . . . . . . . . . 1361

BGP Configuration Examples . . . . . . . . . . . . . 1363

Enabling BGP . . . . . . . . . . . . . . . . . . . 1363

BGP Example . . . . . . . . . . . . . . . . . . . 1364Network Example . . . . . . . . . . . . . . . . . 1365BGP Redistribution of OSPF Example . . . . . . 1366Configuring the Multi-Exit Discriminator in BGP Advertised Routes . . . . . . . . . . . . . . . . 1367Configuring Communities in BGP . . . . . . . . . 1368

Configuring a Route Reflector . . . . . . . . . . 1369

Campus Network MP-BGP and OSPF Configuration . . . . . . . . . . . . . . . . . . . 1371Configuring MP-eBGP and Extended Communities . . . . . . . . . . . . . . . . . . . 1387

37 Bidirectional Forwarding Detection . . 1395

Overview . . . . . . . . . . . . . . . . . . . . . . . . 1395

BFD Operational Modes . . . . . . . . . . . . . . . . 1396

Asynchronous Mode . . . . . . . . . . . . . . . 1396

Demand Mode . . . . . . . . . . . . . . . . . . 1396

Echo Function . . . . . . . . . . . . . . . . . . . 1397

Limitations . . . . . . . . . . . . . . . . . . . . . . . 1397

BFD Example . . . . . . . . . . . . . . . . . . . . . . 1398

38 Unicast Reverse Path Forwarding . . . . 1401

Limitations . . . . . . . . . . . . . . . . . . . . . . . 1402

Contents 41

39 IPv6 Routing . . . . . . . . . . . . . . . . . . . . . 1403

IPv6 Routing Overview . . . . . . . . . . . . . . . . . 1403

How Does IPv6 Compare with IPv4? . . . . . . . 1404

How Are IPv6 Interfaces Configured? . . . . . . 1404

Default IPv6 Routing Values . . . . . . . . . . . . . . 1406

Configuring IPv6 Routing Features (Web) . . . . . . . 1408

Global Configuration . . . . . . . . . . . . . . . 1408

Interface Configuration . . . . . . . . . . . . . . 1409Interface Summary . . . . . . . . . . . . . . . . 1410IPv6 Statistics . . . . . . . . . . . . . . . . . . . 1411IPv6 Neighbor Table . . . . . . . . . . . . . . . 1412DHCPv6 Client Parameters . . . . . . . . . . . . 1413DHCPv6 Client Statistics . . . . . . . . . . . . . 1414IPv6 Router Entry Configuration . . . . . . . . . 1415IPv6 Route Table . . . . . . . . . . . . . . . . . 1416IPv6 Route Preferences . . . . . . . . . . . . . . 1417Configured IPv6 Routes . . . . . . . . . . . . . . 1418

Configuring IPv6 Routing Features (CLI) . . . . . . . . 1419

Configuring Global IP Routing Settings . . . . . . 1419

Configuring IPv6 Interface Settings . . . . . . . 1420Configuring IPv6 Neighbor Discovery . . . . . . 1421

Configuring IPv6 Route Table Entries and Route

Preferences . . . . . . . . . . . . . . . . . . . . 1423

IPv6 Show Commands . . . . . . . . . . . . . . 1425

IPv6 Static Reject and Discard Routes . . . . . . . . 1426

IPv6 Router Advertisement Guard . . . . . . . . . . . 1427

40 DHCPv6 Server Settings . . . . . . . . . . . 1431

DHCPv6 Overview . . . . . . . . . . . . . . . . . . . 1431

42 Contents

What Is a DHCPv6 Pool? . . . . . . . . . . . . . 1432

What Is a Stateless Server? . . . . . . . . . . . 1432

What Is the DHCPv6 Relay Agent Information

Option? . . . . . . . . . . . . . . . . . . . . . . 1432

What Is a Prefix Delegation? . . . . . . . . . . . 1432

Default DHCPv6 Server and Relay Values. . . . . . . 1433

Configuring the DHCPv6 Server and Relay (Web). . . 1434

DHCPv6 Global Configuration . . . . . . . . . . 1434

DHCPv6 Pool Configuration. . . . . . . . . . . . 1435Prefix Delegation Configuration . . . . . . . . . 1437DHCPv6 Pool Summary . . . . . . . . . . . . . . 1438DHCPv6 Interface Configuration . . . . . . . . . 1439DHCPv6 Server Bindings Summary . . . . . . . 1441DHCPv6 Statistics. . . . . . . . . . . . . . . . . 1442

Configuring the DHCPv6 Server and Relay (CLI) . . . 1443

Configuring Global DHCP Server and Relay Agent

Settings . . . . . . . . . . . . . . . . . . . . . . 1443

Configuring a DHCPv6 Pool for Stateless Server

Support . . . . . . . . . . . . . . . . . . . . . . 1443

Configuring a DHCPv6 Pool for Specific Hosts . . 1444

Configuring DHCPv6 Interface Information . . . 1445

Monitoring DHCPv6 Information . . . . . . . . . 1446

DHCPv6 Configuration Examples . . . . . . . . . . . 1448

Configuring a DHCPv6 Stateless Server . . . . . 1448

Configuring the DHCPv6 Server for Prefix

Delegation . . . . . . . . . . . . . . . . . . . . 1449

Configuring an Interface as a DHCPv6 Relay

Agent . . . . . . . . . . . . . . . . . . . . . . . 1449

Contents 43

41 Differentiated Services . . . . . . . . . . . . 1451

DiffServ Overview . . . . . . . . . . . . . . . . . . . 1451

How Does DiffServ Functionality Vary Based onthe Role of the Switch? . . . . . . . . . . . . . . 1452What Are the Elements of DiffServ Configuration? 1452

Class-Map Processing . . . . . . . . . . . . . . 1453

Default DiffServ Values . . . . . . . . . . . . . . . . 1454

Configuring DiffServ (Web) . . . . . . . . . . . . . . 1456

DiffServ Configuration . . . . . . . . . . . . . . 1456

Class Configuration . . . . . . . . . . . . . . . .