Cisco Unified Border Element ( Cube ) Guide

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Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model Nov 21, 2013

Text Part Number: OL-19820-15

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Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model 20082013 Cisco Systems, Inc. All rights reserved.

Preface

This preface describes the objectives and organization of this guide and explains how to find additional information on related products and services. This preface contains the following sections:

Guide Revision History, page iii Objectives, page vii Intended Audience, page vii Organization, page viii Related Documentation, page x Conventions, page xi Configuration Guides, Command References, and Supplementary Resources, page xii Obtaining Documentation and Submitting a Service Request, page xviii

Guide Revision HistoryThe Guide Revision History records technical changes to this guide. The table shows the software release number and guide revision number for the change, the date of the change, and a brief summary of the change.

Cisco IOS Release. Part Number Publication Date Change Summary

Cisco IOSXE Release3.11S

OL-19820-15 November, 2013 The following features were added: Blended Transcoding


OL-19820-14 November, 2012 The following features were added: AMR-WB

Cisco IOSXE Release

OL-19820-13 July, 2012 The following features were added:iiiCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

OL-19820-15

3.7S H.248 Border Access Controller Support IMS Rf Billing Interfaces


OL-19820-12 March 29, 2012 The following features were added: Common IP Address Media Bypass Via Header Passthrough

Text Part Number:


OL-19820-11 November 28, 2011 The following features were added: Alarm-Related Enhancements CAC-Related Enhancements Call Log Correlation Flexible Media Routing


OL-19820-10 July 25, 2011 The following features were added: Limiting Resource Usage QoS Demarcation Enhancements SDP Editing Using Script-Based Editors SRTP Support for RTCP Multiplexed with

RTP and for SSRC-Based MultiplexingCisco IOSXE Release3.3S

OL-19820-09 March 18, 2011 The following features were added: SIP Header Manipulation Enhancements Support for H.239 Voice Transcoding Per Adjacency Statistics Message, Policy, and Subscriber Statistics

Enhancements

SPA DSP: Call Recovery Flow Statistics QoS Enhancements Selective Radius Billing Alternative Contact Rewriting BFCP Support Limited H.323 ID Routing and Passthrough

Support Support to the Cisco ASR 1006 Series

Router and Cisco ASR 1013 Series Router Interchassis-Intrachassis ConversionivCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Cisco IOS XE Release 3.2S

OL-19820-08 November 24, 2010 The following features were added: SPA DSP Services Emergency and Security Enhancements

SIP trust model includes H.323 Interface Emergency Call statistics

SBC Calls Support using IPSec Tunnels ASR1001 Support XML based billing SIP Interworking Enhancements

Event Header in Publish Method Source Number Editing during Number

analysis Privacy Service Option Ping Enhancements Multiple SBC media bypass Add Expires Header to Register

Message

Absence of Username Support in Request URI

Analysis, Routing, and Policy Enhancements Copy and Swap Procedure Multiple CAC Averaging Periods Administrative Domains Blacklist Alerts

Media Interworking Enhancements MGX Assisted DTMF Interworking Codec Preference and Re-Ordering Per-Adjacency Codec String

Interworking

Media Address Pool Support PKI High Availability SupportvCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Cisco IOS XE Release 3.1S

OL-19820-07 July 30, 2010 The following features were added: IMS Rx and Diameter ENUM Client feature Customized System Error Messages SRTP to RTP Interworking and SRTP

Passthrough

Media Bandwidth Policy SDP on 200 Invite Memory Alerting

SIP Destination ID and SIP Source ID Support for Asymmetric Payload Types IP IPv6/VRF Feature DTMF Method Interworking and ACCEPT

Header Handling CALEA IRI Interface Support feature Redundant Peer Addresses Per Subscriber Delete

Cisco IOS XE Release 2.6.2

OL-19820-06 July 08,2010 Endpoint information in PacketCable billing records was added.


OL-19820-05 April, 2010 Adjacency information in PacketCable Billing Records was added.

Cisco IOS XE Release 2.6

OL-19820-04 February 26, 2010 IPv6 support including IPv4 to IPv6 and IPv6 to IPv6 Interworking, Dynamic Codec Configuration, multiple audio and video codec support, H.323 support for Clear Channel calls, SIP-I Support and SIP Non-SDP Body Filtering, Unsignaled (granular-level) Secure Media, Configurable Mutual TLS Authentication per Interface, TLS Transport Parameter in Record-Router Header, Source Number Analysis, and Interoperability for SIP Authentication features were added.


OL-19820-03 January 27, 2010 H.323 Extra TCS Codecs support was added.viCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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ObjectivesThis guide describes the Integrated Session Border Controller functions, features, restrictions, and configuration tasks for the Cisco ASR 1000 Series Aggregation Services Routers. It is not intended as a comprehensive guide to all of the software features that can be run using the Cisco ASR 1000 Series Routers, but only the Integrated Session Border Controller software specific to these Routers.For information on general Cisco IOS software features that are also available on the Cisco ASR 1000 Series Routers, see the feature module or the technology guide for that software feature.

Intended AudienceThis guide is intended for the following people:

Experienced service provider administrators Cisco telecommunications management engineers Customers who use and manage Cisco ASR 1000 Series Routers


OL-19820-02 November 25, 2009 H.323 support, H.323-SIP interworking features, H.323 call routing, Transcoding support, multiple SIP features, 100rel interworking, SIP IP-FQDN URI translation, Contact Username Passthrough, IP Realm support, customized offer for late-to-early media, regular expression based routing, support for external server, call duration monitoring, signaling congestion handling, support for P-visited-network-ID, and other features were added in this release. See the Feature History Table in each chapter for supported features.


OL-19820-01 June 26, 2009 This guide introduced the unified model and a new unified feature set on the Cisco Unified Border Element (SP Edition). See the Feature History Table in each chapter for supported features.

The name Cisco Unified Border Element (SP Edition) replaced the Integrated Session Border Controller name.viiCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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OrganizationThis guide contains the following chapters and appendixes:

Section Title Description

Part 1 Basics This part contains the following modules: Using the Command-Line Interface in Cisco

IOS XE Software Cisco Unified Border Element (SP Edition)

Overview Configuring Cisco Unified Border Element

(SP Edition) Media Address Pools Implementing Multi-VRF on Cisco Unified

Border Element (SP Edition) Implementing Adjacencies on Cisco Unified

Border Element (SP Edition) Implementing Cisco Unified Border Element

(SP Edition) Policies Implementing Firewall Traversal and NAT Call Duration Monitoring IP Realm Support Managing Emergency Calls

Part 2 Service This part contains the following modules: Unexpected Source Address Alerting DoS Prevention and Dynamic Blacklisting

Part 3 Dual Tone Multifrequency (DTMF)

This part contains the following module: Implementing Interworking DTMF

Part 4 Redundancy-High Availability

This part contains the following modules: Cisco Unified Border Element (SP Edition)

RedundancyHigh Availability Support Interchassis High Availability

Part 5 Media This part contains the following modules: Fax Support Codec Handling, page 365 SDP Bandwidth Field Features SDP Handling Flexible Media RoutingviiiCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Part 6 Session Initiation Protocol (SIP)

This part contains the following modules: Inherit Profiles for Non-IMS Adjacencies Cisco Unified Border Element (SP Edition)

Registration Features SIP Message Manipulation Signaling Congestion Handling SIP IP-FQDN URI Translation SIP Tel URI Support SIP Timer SIP Configuration Flexibility SIP Renegotiation 100rel Interworking Support Customized System Error Messages BFCP Support Line-Side Support for Cisco Unified

Communications ManagerPart 7 H.323 This part contains the following modules:

H.323 Support H.323 to SIP Interworking Support for H.239

Part 8 Billing This part contains the following modules: Implementing Billing on Cisco Unified

Border Element (SP Edition) Billing Support

Part 9 Secure Real-Time Transport Protocol (SRTP)

This part contains the following module: Secure Media and SRTP Passthrough

Part 10 Quality of Service (QoS) This part contains the following module: Implementing QoS (Marking)

Part 11 Transcoding This part contains the following modules: Implementing Transcoding Cisco Unified Border Element (SP

Edition)SPA DSP ServicesPart 12 Management and

OperationsThis part contains the following modules:

Tracking Policy Failure Statistics Implementing SNMP Logging Support

Section Title DescriptionixCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Related DocumentationThis section refers you to other documentation that might also be useful as you configure your Cisco ASR 1000 Series Routers. The documentation listed below is available on Cisco.com. For information on Cisco Unified Border Element (SP Edition) commands, see the Cisco Unified Border Element (SP Edition) Command Reference: Unified Model at: http://www.cisco.com/en/US/docs/ios/sbc/command/reference/sbcu_book.htmlFor information on the Cisco Unified Border Element (SP Edition) distributed model, see the:

Cisco Unified Border Element (SP Edition) Configuration Guide: Distributed Model at: http://www.cisco.com/en/US/docs/routers/asr1000/configuration/guide/sbc/2_xe/sbc_2_xe_book.html

Cisco Unified Border Element (SP Edition) Command Reference: Distributed Model at: http://www.cisco.com/en/US/docs/ios/sbc/command/reference/sbc_book.html

For information on the Cisco Unified Border Element (SP Edition) examples, see the Cisco Unified Border Element (SP Edition) Configuration Profile Examples at:http://www.cisco.com/en/US/docs/routers/asr1000/profiles/SBC_Config_Examplebook.html

Part 13 Service This part contains the following modules: SIP 3xx Redirect Responses SIP Call Hold SIP Call Transfer SIP Authentication Late-to-Early Media Interworking Early Media SIP Instant Messaging Integration of Resource Management and SIP ENUM Client

Part 14 IPv6 This part contains the following module: IPv6 Support

Part 15 IP Multimedia Subsystem (IMS)

This part contains the following modules: P-CSCF Support IBCF Processing Support IMS Rx, Diameter, and IMS Rf

Part 16 CALEA IRI Interface Support

This part contains the following module: CALEA IRI Interface Support

Appendix Appendix A End-to-End Cisco Unified Border Element (SP Edition) Configuration Example

Appendix B SIP Compliance and InteroperabilityAppendix C XML Billing Schema

Section Title DescriptionxCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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For other related command documentation, see the:

Cisco IOS command reference books for the new Cisco ASR 1000 Series Router commands and

commands in existing Cisco IOS features for this release at the following link:http://www.cisco.com/en/US/products/ps9587/prod_command_reference_list.html

Command Lookup Tool for information about Cisco IOS commands in general or a Cisco IOS master commands list at the following link:http://tools.cisco.com/Support/CLILookup

For Quick Start guides and installation documentation for the Cisco ASR 1000 Series Router, see the hardware documentation that was provided as a part of this release at:http://www.cisco.com/en/US/products/ps9343/prod_installation_guides_list.htmlFor information on new software features, see the:

Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guidehttp://www.cisco.com/en/US/docs/routers/asr1000/configuration/guide/chassis/asrswcfg.html

Cisco IOS XE release noteshttp://www.cisco.com/en/US/docs/ios/ios_xe/2/release/notes/rnasr21.html

For further information, see the Cisco ASR 1000 Series Aggregation Services Routers Documentation Roadmap at: http://www.cisco.com/en/US/docs/routers/asr1000/roadmap/asr1000rm.htmlDocumentation for the Cisco IOS XE configuration guides and feature modules can be found at:http://www.cisco.com/en/US/products/ps9587/tsd_products_support_configure.html

ConventionsThis document uses the following conventions:

Convention Indication

bold font Commands and keywords and user-entered text appear in bold font.italic font Document titles, new or emphasized terms, and arguments for which you supply

values are in italic font.[ ] Elements in square brackets are optional.{x | y | z} Required alternative keywords are grouped in braces and separated by

vertical bars.[x | y | z] Optional alternative keywords are grouped in brackets and separated by

vertical bars.string A nonquoted set of characters. Do not use quotation marks around the string or

the string will include the quotation marks.courier font Terminal sessions and information the system displays appear in courier font.< > Nonprinting characters such as passwords are in angle brackets.[ ] Default responses to system prompts are in square brackets.!, # An exclamation point (!) or a pound sign (#) at the beginning of a line of code

indicates a comment line.xiCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Note Means reader take note.

Tip Means the following information will help you solve a problem.

Caution Means reader be careful. In this situation, you might perform an action that could result in equipment damage or loss of data.

Timesaver Means the described action saves time. You can save time by performing the action described in the paragraph.

Warning Means reader be warned. In this situation, you might perform an action that could result in bodily injury.

Configuration Guides, Command References, and Supplementary Resources

Table 1 lists, in alphabetical order, Cisco IOS XE software configuration guides and command references, including brief descriptions of the contents of the documents. The command references contain commands for both Cisco IOS software and Cisco IOS XE software, for all releases. The command references support many different software releases and platforms. Your Cisco IOS XE software release or platform may not support all these technologies.Table 2 lists documents and resources that supplement the Cisco IOS XE software configuration guides and command references. These supplementary resources include release notes and caveats; master command lists; new, modified, removed, and replaced command lists; system messages; and the debug command reference.For additional information about configuring and operating specific networking devices, and to access Cisco IOS documentation, go to the Product/Technologies Support area of Cisco.com at the following location:http://www.cisco.com/go/techdocs

Table 1 Cisco IOS XE Configuration Guides and Command References

Configuration Guide and Command Reference Titles Features/Protocols/Technologies

Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide

Configuration and troubleshooting of SPA interface processors (SIPs) and shared port adapters (SPAs) that are supported on the Cisco ASR 1000 Series Router.

Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide

Overview of software functionality that is specific to the Cisco ASR 1000 Series Aggregation Services Routers.xiiCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Table 1 Cisco IOS XE Configuration Guides and Command References (continued) Cisco IOS XE Access Node Control Protocol Configuration Guide

Cisco IOS Access Node Control Protocol Command Reference

Communication protocol between digital subscriber line access multiplexers (DSLAMs) and a broadband remote access server (BRAS).

Cisco IOS XE Asynchronous Transfer Mode Configuration Guide

Cisco IOS Asynchronous Transfer Mode Command Reference

LAN ATM, multiprotocol over ATM (MPoA), and WAN ATM.

Cisco IOS XE Broadband Access Aggregation and DSL Configuration Guide

Cisco IOS Broadband Access Aggregation and DSL Command Reference

PPP over Ethernet (PPPoE).

Cisco IOS XE Carrier Ethernet Configuration Guide Cisco IOS Carrier Ethernet Command Reference

IEEE 802.3ad Link Bundling; Link Aggregation Control Protocol (LACP) support for Ethernet and Gigabit Ethernet links and EtherChannel bundles; LACP support for stateful switchover (SSO), in service software upgrade (ISSU), Cisco nonstop forwarding (NSF), and nonstop routing (NSR) on Gigabit EtherChannel bundles; and IEEE 802.3ad Link Aggregation MIB.

Cisco IOS XE Configuration Fundamentals Configuration Guide

Cisco IOS Configuration Fundamentals Command Reference

Autoinstall, Setup, Cisco IOS command-line interface (CLI), Cisco IOS file system (IFS), Cisco IOS web browser user interface (UI), basic file transfer services, and file management.

Cisco IOS XE DECnet Configuration Guide Cisco IOS DECnet Command Reference

DECnet protocol.

Cisco IOS XE Dial Technologies Configuration Guide Cisco IOS Dial Technologies Command Reference

Asynchronous communications, dial backup, dialer technology, Multilink PPP (MLP), PPP, and virtual private dialup network (VPDN).

Easy Virtual Network Configuration Guide Easy Virtual Network Command Reference

Easy Virtual Network (EVN) is an IP-based virtualization technology that provides end-to-end virtualization of the network. With EVN, you can use a single IP infrastructure to provide separate virtual networks whose traffic paths remain isolated from each other.

Cisco IOS XE High Availability Configuration Guide Cisco IOS High Availability Command Reference

A variety of high availability (HA) features and technologies that are available for different network segments (from enterprise access to service provider core) to facilitate creation of end-to-end highly available networks. Cisco IOS HA features and technologies can be categorized in three key areas: system-level resiliency, network-level resiliency, and embedded management for resiliency.

Cisco IOS XE Intelligent Services Gateway Configuration Guide

Cisco IOS Intelligent Services Gateway Command Reference

Subscriber identification, service and policy determination, session creation, session policy enforcement, session life-cycle management, accounting for access and service usage, and session state monitoring.

Configuration Guide and Command Reference Titles Features/Protocols/TechnologiesxiiiCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Table 1 Cisco IOS XE Configuration Guides and Command References (continued) Cisco IOS XE Interface and Hardware Component Configuration Guide

Cisco IOS Interface and Hardware Component Command Reference

LAN interfaces, logical interfaces, serial interfaces, virtual interfaces, and interface configuration.

Cisco IOS XE IP Addressing Services Configuration Guide

Cisco IOS IP Addressing Services Command Reference

IP addressing, Address Resolution Protocol (ARP), Network Address Translation (NAT), Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), and Next Hop Address Resolution Protocol (NHRP).

Cisco IOS XE IP Application Services Configuration Guide

Cisco IOS IP Application Services Command Reference

Enhanced Object Tracking (EOT), Gateway Load Balancing Protocol (GLBP), Hot Standby Router Protocol (HSRP), IP Services, TCP, Web Cache Communication Protocol (WCCP), User Datagram Protocol (UDP), and Virtual Router Redundancy Protocol (VRRP).

Cisco IOS XE IP Multicast Configuration Guide Cisco IOS IP Multicast Command Reference

Protocol Independent Multicast (PIM) sparse mode (PIM-SM), bidirectional PIM (bidir-PIM), Source Specific Multicast (SSM), Multicast Source Discovery Protocol (MSDP), Internet Group Management Protocol (IGMP), and Multicast VPN (MVPN).

Cisco IOS XE IP Routing: BFD Configuration Guide Bidirectional forwarding detection (BFD). Cisco IOS XE IP Routing: BGP Configuration Guide Cisco IOS IP Routing: BGP Command Reference

Border Gateway Protocol (BGP), multiprotocol BGP, multiprotocol BGP extensions for IP multicast.

Cisco IOS XE IP Routing: EIGRP Configuration Guide

Cisco IOS IP Routing: EIGRP Command Reference

Enhanced Interior Gateway Routing Protocol (EIGRP).

Cisco IOS XE IP Routing: ISIS Configuration Guide Cisco IOS IP Routing: ISIS Command Reference

Intermediate System-to-Intermediate System (IS-IS).

Cisco IOS XE IP Routing: ODR Configuration Guide Cisco IOS IP Routing: ODR Command Reference

On-Demand Routing (ODR).

Cisco IOS XE IP Routing: OSPF Configuration Guide Cisco IOS IP Routing: OSPF Command Reference

Open Shortest Path First (OSPF).

Cisco IOS XE IP Routing: Protocol-Independent Configuration Guide

Cisco IOS IP Routing: Protocol-Independent Command Reference

IP routing protocol-independent features and commands. Generic policy-based routing (PBR) features and commands are included.

Cisco IOS XE IP Routing: RIP Configuration Guide Cisco IOS IP Routing: RIP Command Reference

Routing Information Protocol (RIP).

Cisco IOS XE IP SLAs Configuration Guide Cisco IOS IP SLAs Command Reference

Cisco IOS IP Service Level Agreements (IP SLAs).

Cisco IOS XE IP Switching Configuration Guide Cisco IOS IP Switching Command Reference

Cisco Express Forwarding.

Configuration Guide and Command Reference Titles Features/Protocols/TechnologiesxivCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Table 1 Cisco IOS XE Configuration Guides and Command References (continued) Cisco IOS XE IPv6 Configuration Guide Cisco IOS IPv6 Command Reference

For a list of IPv6 features, protocols, and technologies, go to the IPv6 Start Here document at the following URL:http://www.cisco.com/en/US/docs/ios/ios_xe/ipv6/configuration/guide/ip6-roadmap_xe.html

Cisco IOS XE ISO CLNS Configuration Guide Cisco IOS ISO CLNS Command Reference

ISO Connectionless Network Service (CLNS).

Cisco IOS XE LAN Switching Configuration Guide Cisco IOS LAN Switching Command Reference

VLANs and multilayer switching (MLS).

Cisco IOS XE Multiprotocol Label Switching Configuration Guide

Cisco IOS Multiprotocol Label Switching Command Reference

MPLS Label Distribution Protocol (LDP), MPLS Layer 2 VPNs, MPLS Layer 3 VPNs, MPLS Traffic Engineering (TE), and MPLS Embedded Management (EM) and MIBs.

Cisco IOS XE NetFlow Configuration Guide Cisco IOS NetFlow Command Reference

Network traffic data analysis, aggregation caches, and export features.

Cisco IOS XE Network Management Configuration Guide

Cisco IOS Network Management Command Reference

Basic system management, system monitoring and logging, Cisco IOS Scripting with Tool Control Language (Tcl), Cisco networking services (CNS), Embedded Event Manager (EEM), Embedded Syslog Manager (ESM), HTTP, Remote Monitoring (RMON), and SNMP.

Cisco IOS XE Novell IPX Configuration Guide Cisco IOS Novell IPX Command Reference

Novell Internetwork Packet Exchange (IPX) protocol.

Cisco IOS XE Optimized Edge Routing Configuration Guide

Cisco IOS Optimized Edge Routing Command Reference

Optimized edge routing (OER) monitoring and automatic route optimization and load distribution for multiple connections between networks.

Cisco IOS XE Performance Routing Configuration Guide

Cisco IOS Performance Routing Command Reference

Performance Routing (PfR) provides additional intelligence to classic routing technologies to track the performance of, or verify the quality of, a path between two devices over a WAN infrastructure in order to determine the best egress or ingress path for application traffic.

Cisco IOS XE Quality of Service Solutions Configuration Guide

Cisco IOS Quality of Service Solutions Command Reference

Class-based weighted fair queueing (CBWFQ), low latency queueing (LLQ), Modular Quality of Service (QoS) Command-Line Interface (CLI) (MQC), Network-Based Application Recognition (NBAR), priority queueing, Multilink PPP (MLP) for QoS, header compression, Resource Reservation Protocol (RSVP), weighted fair queueing (WFQ), and weighted random early detection (WRED).

Cisco IOS Security Command Reference Access control lists (ACLs); authentication, authorization, and accounting (AAA); firewalls; IP security and encryption; neighbor router authentication; network access security; public key infrastructure (PKI); RADIUS; and TACACS+.

Configuration Guide and Command Reference Titles Features/Protocols/TechnologiesxvCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Table 1 Cisco IOS XE Configuration Guides and Command References (continued) Cisco IOS XE Security Configuration Guide: Secure Connectivity

Internet Key Exchange (IKE) for IPsec VPNs; security for VPNs with IPsec; VPN availability features (reverse route injection, IPsec preferred peer, and real-time resolution for the IPsec tunnel peer); IPsec data plane features; IPsec management plane features; Public Key Infrastructure (PKI); Dynamic Multipoint VPN (DMVPN); Easy VPN; and Cisco Group Encrypted Transport VPN (GET VPN).

Cisco IOS XE Security Configuration Guide: Securing the Control Plane

Control Plane Policing, Neighborhood Router Authentication.

Cisco IOS XE Security Configuration Guide: Securing the Data Plane

Access Control Lists (ACLs); Firewalls: Context-Based Access Control (CBAC) and Zone-Based Firewall; Cisco IOS Intrusion Prevention System (IPS); Flexible Packet Matching; Unicast Reverse Path Forwarding (uRPF); Threat Information Distribution Protocol (TIDP) and TMS.

Cisco IOS XE Security Configuration Guide: Securing User Services

AAA (includes Network Admission Control [NAC]); Security Server Protocols (RADIUS and TACACS+); Secure Shell (SSH); Secure Access for Networking Devices (includes Autosecure and Role-Based CLI access); Lawful Intercept.

Cisco IOS XE Service Advertisement Framework Configuration Guide

Cisco IOS Service Advertisement Framework Command Reference

Cisco Service Advertisement Framework.

Cisco IOS XE VPDN Configuration Guide Cisco IOS VPDN Command Reference

Multihop by Dialed Number Identification Service (DNIS), timer and retry enhancements for L2TP and Layer 2 Forwarding (L2F), RADIUS Attribute 82 (tunnel assignment ID), shell-based authentication of VPDN users, and tunnel authentication via RADIUS on tunnel terminator.

Cisco IOS XE Wide-Area Networking Configuration Guide

Cisco IOS Wide-Area Networking Command Reference

Frame Relay; L2VPN Pseudowire Redundancy; and Media-Independent PPP and Multilink PPP.

Configuration Guide and Command Reference Titles Features/Protocols/TechnologiesxviCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Table 1 Cisco IOS XE Configuration Guides and Command References (continued) Cisco Unified Border Element (Enterprise) Configuration Guide

Cisco IOS Voice Command Reference

The Cisco Unified Border Element (Enterprise) on the Cisco ASR 1000 brings a scalable option for enterprise customers. Running as a process on the Cisco ASR 1000 and utilizing the high-speed RTP packet processing path, the Cisco Unified Border Element (Enterprise) is used as an IP-to-IP gateway by enterprises and commercial customers to interconnect SIP and H.323 voice and video networks. The Cisco UBE (Enterprise) provides a network-to-network demarcation interface for signaling interworking, media interworking, address and port translations, billing, security, quality of service (QoS), and bandwidth management.

Cisco Unified Border Element (SP Edition) Configuration Guide: Distributed Model

Cisco Unified Border Element (SP Edition) Command Reference: Distributed Model

The Cisco Unified Border Element (SP Edition) is a session border controller (SBC) that is VoIP-enabled and deployed at the edge of networks. For Cisco IOS XE Release 2.3 and earlier releases, Cisco Unified Border Element (SP Edition) is supported only in the distributed mode. Operating in the distributed mode, the SBC is a toolkit of functions that can be used to deploy and manage VoIP services, such as signaling interworking, network hiding, security, and quality of service.

Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

Cisco Unified Border Element (SP Edition) Command Reference: Unified Model

The Cisco Unified Border Element (SP Edition) is a highly scalable, carrier-grade session border controller (SBC) that is designed for service providers and that is generally deployed at the border of the enterprise or SP networks to enable the easy deployment and management of VoIP services. Cisco Unified Border Element (SP Edition) is integrated into Cisco routing platforms and can use a large number of router functions to provide a very feature-rich and intelligent SBC application. Formerly known as Integrated Session Border Controller, Cisco Unified Border Element (SP Edition) provides a network-to-network demarcation interface for signaling interworking, media interworking, address and port translations, billing, security, quality of service, call admission control, and bandwidth management.For Cisco IOS XE Release 2.4 and later releases, Cisco Unified Border Element (SP Edition) can operate in two modes or deployment models: unified and distributed. The configuration guide documents the features in the unified mode.

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Table 2 lists documents and resources that supplement the Cisco IOS XE software configuration guides

and command references.

Obtaining Documentation and Submitting a Service RequestFor information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly Whats New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.htmlSubscribe to the Whats New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.

Table 2 Cisco IOS XE Software Supplementary Documents and Resources

Document Title or Resource Description

Cisco IOS Master Command List, All Releases Alphabetical list of all the commands documented in all Cisco IOS XE software releases.

Cisco IOS Debug Command Reference Alphabetical list of debug commands including brief descriptions of use, command syntax, and usage guidelines.

Cisco IOS XE system messages List of Cisco IOS XE system messages and descriptions. System messages may indicate problems with your system, may be informational only, or may help diagnose problems with communications lines, internal hardware, or the system software.

Release notes and caveats Information about new and changed features, system requirements, and other useful information about specific software releases; information about defects in specific Cisco IOS XE software releases.

MIBs Files used for network monitoring. To locate and download MIBs for selected platforms, Cisco IOS XE software releases, and feature sets, use Cisco MIB Locator at the following URL:http://www.cisco.com/go/mibs

RFCs Standards documents maintained by the Internet Engineering Task Force (IETF) that Cisco IOS XE documentation references where applicable. The full text of referenced RFCs may be obtained at the following URL:http://www.rfc-editor.org/xviiiCisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Part 1: Basics

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Note The AUX port on the Route Processor (RP) instalany useful customer purpose and should be accessrepresentative.led in a Cisco ASR 1000 series router does not serve ed only under the advisement of a customer support C H A P T E R 1Using the Command-Line Interface in Cisco IOS XE Software

This chapter provides basic information about the command-line interface (CLI) in Cisco IOS XE software and how you can use some of the CLI features. This document contains the following sections:

Initially Configuring a Device, page 1-3 Using the CLI, page 1-4 Saving Changes to a Configuration, page 1-13 Additional Information, page 1-14

For more information about using the CLI, see Part 1: Using the Cisco IOS Command-Line Interface (CLI) of Cisco IOS XE Configuration Fundamentals Configuration Guide.For information about the software documentation set, see the About Cisco IOS XE Software Documentation document.

Initially Configuring a DeviceInitially configuring a device varies by platform. For information about performing an initial configuration, see the hardware installation documentation that is provided with the original packaging of the product or go to the Product Support area of Cisco.com at http://www.cisco.com/go/techdocs. After you have performed the initial configuration and connected the device to your network, you can configure the device by using the console port or a remote access method, such as Telnet or Secure Shell (SSH), to access the CLI or by using the configuration method provided on the device, such as Security Device Manager.

Changing the Default Settings for a Console or AUX Port

There are only two settings that you can change on a console port or an AUX port: Change the port speed with the config-register 0x command. Changing the port speed is not

recommended. The well-known default speed is 9600. Change the behavior of the port; for example, by adding a password or changing the timeout value.1-3ent (SP Edition) Configuration Guide: Unified Model

Chapter 1 Using the Command-Line Interface in Cisco IOS XE Software Using the CLIUsing the CLIThis section describes the following topics:

Understanding Command Modes, page 1-4 Using the Interactive Help Feature, page 1-7 Understanding Command Syntax, page 1-8 Understanding Enable and Enable Secret Passwords, page 1-9 Using the Command History Feature, page 1-10 Abbreviating Commands, page 1-11 Using Aliases for CLI Commands, page 1-11 Using the no and default Forms of Commands, page 1-12 Using the debug Command, page 1-12 Filtering Output Using Output Modifiers, page 1-12 Understanding CLI Error Messages, page 1-13

Understanding Command ModesThe CLI command mode structure is hierarchical, and each mode supports a set of specific commands. This section describes the most common of the many modes that exist.Table 1-1 lists common command modes with associated CLI prompts, access and exit methods, and a brief description of how each mode is used.

Table 1-1 CLI Command Modes

Command Mode Access Method Prompt Exit Method Mode Usage

User EXEC Log in. Router> Issue the logout or exit command.

Change terminal settings. Perform basic tests. Display device status.

Privileged EXEC

From user EXEC mode, issue the enable command.

Router# Issue the disable command or the exit command to return to user EXEC mode.

Issue show and debug commands.

Copy images to the device.

Reload the device. Manage device

configuration files.

Manage device file systems.

Global configuration

From privileged EXEC mode, issue the configure terminal command.

Router(config)# Issue the exit command or the end command to return to privileged EXEC mode.

Configure the device.1-4Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 1 Using the Command-Line Interface in Cisco IOS XE Software Using the CLI

Table 1-1 CLI Command Modes (continued)Interface configuration

From globalconfiguration mode, issue the interface command.

Router(config-if)# Issue the exit command to return to global configuration mode or the end command to return to privileged EXEC mode.

Configure individual interfaces.

Line configuration

From global configuration mode, issue the line vty or line console command.

Router(config-line)# Issue the exit command to return to global configuration mode or the end command to return to privileged EXEC mode.

Configure individual terminal lines.

Command Mode Access Method Prompt Exit Method Mode Usage1-5Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Table 1-1 CLI Command Modes (continued)ROM monitor From privileged EXEC mode, issue the reload command. Press the Break key during the first 60 seconds while the system is booting.

rommon # >

The # symbol represents the line number and increments at each prompt.

Issue the continue command.

Run as the default operating mode when a valid image cannot be loaded.

Access the fall-back procedure for loading an image when the device lacks a valid image and cannot be booted.

Perform password recovery when a CTRL-Break sequence is issued within 60 seconds of a power-on or reload event.

Diagnostic The router boots or enters diagnostic mode in the following scenarios. When a Cisco IOS XE process or processes fail, in most scenarios the router will reload.

A user-configured access policy was configured using the transport-map command, which directed the user into diagnostic mode.

The router was accessed using an RP auxiliary port.

A break signal (Ctrl-C, Ctrl-Shift-6, or the send break command) was entered, and the router was configured to enter diagnostic mode when the break signal was received.

Router(diag)# If a Cisco IOS XE process failure is the reason for entering diagnostic mode, the failure must be resolved and the router must be rebooted to exit diagnostic mode.If the router is in diagnostic mode because of a transport-map configuration, access the router through another port or use a method that is configured to connect to the Cisco IOS XE CLI.If the RP auxiliary port was used to access the router, use another port for access. Accessing the router through the auxiliary port is not useful for customer purposes.

Inspect various states on the router, including the Cisco IOS XE state.

Replace or roll back the configuration.

Provide methods of restarting the Cisco IOS XE software or other processes.

Reboot hardware, such as the entire router, an RP, an ESP, a SIP, a SPA, or other hardware components.

Transfer files into or off of the router using remote access methods such as FTP, TFTP, and SCP.

Command Mode Access Method Prompt Exit Method Mode Usage1-6Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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EXEC commands are not saved when the software reboots. Commands that you issue in a configuration

mode can be saved to the startup configuration. If you save the running configuration to the startup configuration, these commands will execute when the software is rebooted. Global configuration mode is the highest level of configuration mode. From global configuration mode, you can enter a variety of other configuration modes, including protocol-specific modes.ROM monitor mode is a separate mode that is used when the software cannot load properly. If a valid software image is not found when the software boots or if the configuration file is corrupted at startup, the software might enter ROM monitor mode. Use the question symbol (?) to view the commands that you can use while the device is in ROM monitor mode.rommon 1 > ?alias set and display aliases commandboot boot up an external processconfreg configuration register utilitycont continue executing a downloaded imagecontext display the context of a loaded imagecookie display contents of cookie PROM in hex.

.

.

rommon 2 >

The following example shows how the command prompt changes to indicate a different command mode:Router> enableRouter# configure terminalRouter(config)# interface ethernet 1/1Router(config-if)# ethernetRouter(config-line)# exitRouter(config)# endRouter#

Note A keyboard alternative to the end command is Ctrl-Z.

Using the Interactive Help FeatureThe CLI includes an interactive Help feature. Table 1-2 describes how to use the Help feature.

Table 1-2 CLI Interactive Help Commands

Command Purpose

help Provides a brief description of the Help feature in any command mode.? Lists all commands available for a particular command mode.partial command? Provides a list of commands that begin with the character string (no

space between the command and the question mark).partial command Completes a partial command name (no space between the command

and ).command ? Lists the keywords, arguments, or both associated with the command

(space between the command and the question mark).command keyword ? Lists the arguments that are associated with the keyword (space between

the keyword and the question mark).1-7Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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The following examples show how to use the help commands:helpRouter> help

Help may be requested at any point in a command by entering a question mark '?'. If nothing matches, the help list will be empty and you must backup until entering a '?' shows the available options.

Two styles of help are provided:

1. Full help is available when you are ready to enter a command argument (e.g. 'show ?') and describes each possible argument.

2. Partial help is provided when an abbreviated argument is entered and you want to know what arguments match the input (e.g. 'show pr?'.)

?Router# ?Exec commands: access-enable Create a temporary access-List entry access-profile Apply user-profile to interface access-template Create a temporary access-List entry alps ALPS exec commands archive manage archive files

partial command?Router(config)# zo?zone zone-pair

partial commandRouter(config)# we webvpn

command ?Router(config-if)# pppoe ? enable Enable pppoe max-sessions Maximum PPPOE sessions

command keyword ?Router(config-if)# pppoe enable ? group attach a BBA group

Understanding Command SyntaxCommand syntax is the format in which a command should be entered in the CLI. Commands include the name of the command, keywords, and arguments. Keywords are alphanumeric strings that are used literally. Arguments are placeholders for values that a user must supply. Keywords and arguments may be required or optional. Specific conventions convey information about syntax and command elements. Table 1-3 describes these conventions.1-8Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 1 Using the Command-Line Interface in Cisco IOS XE Software Using the CLIThe following examples show syntax conventions:Router(config)# ethernet cfm domain ? WORD domain name

Router(config)# ethernet cfm domain dname ? level

Router(config)# ethernet cfm domain dname level ? maintenance level number

Router(config)# ethernet cfm domain dname level 7 ?

Router(config)# snmp-server file-transfer access-group 10 ? protocol protocol options

Router(config)# logging host ? Hostname or A.B.C.D IP address of the syslog server ipv6 Configure IPv6 syslog server

Understanding Enable and Enable Secret PasswordsSome privileged EXEC commands are used for actions that impact the system, and it is recommended that you set a password for these commands to prevent unauthorized use. Two types of passwords, enable (not encrypted) and enable secret (encrypted), can be set. The following commands set these passwords and are issued in global configuration mode:

Table 1-3 CLI Syntax Conventions

Symbol/Text Function Notes

< > (angle brackets) Indicate that the option is an argument.

Sometimes arguments are displayed without angle brackets.

A.B.C.D. Indicates that you must enter a dotted decimal IP address.

Angle brackets (< >) are not always used to indicate that an IP address is an argument.

WORD (all capital letters) Indicates that you must enter one word.

Angle brackets (< >) are not always used to indicate that a WORD is an argument.

LINE (all capital letters) Indicates that you must enter more than one word.

Angle brackets (< >) are not always used to indicate that a LINE is an argument.

(carriage return) Indicates the end of the list of available keywords and arguments, and also indicates when keywords and arguments are optional. When is the only option, you have reached the end of the branch or the end of the command if the command has only one branch.

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enable password

enable secret password

Using an enable secret password is recommended because it is encrypted and more secure than the enable password. When you use an enable secret password, text is encrypted (unreadable) before it is written to the config.text file. When you use an enable password, the text is written as entered (readable) to the config.text file. Each type of password is case sensitive, can contain from 1 to 25 uppercase and lowercase alphanumeric characters, and can start with a number. Spaces are also valid password characters; for example, two words is a valid password. Leading spaces are ignored, but trailing spaces are recognized.

Note Both password commands have numeric keywords that are single integer values. If you choose a number for the first character of your password followed by a space, the system will read the number as if it were the numeric keyword and not as part of your password.

When both passwords are set, the enable secret password takes precedence over the enable password. To remove a password, use the no form of the commands: no enable password or no enable secret password. For more information about password recovery procedures for Cisco products, see the following:http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_tech_note09186a00801746e6.shtml

Using the Command History FeatureThe command history feature saves the commands that you enter during a session in a command history buffer. The default number of commands saved is 10, but the number is configurable within the range of 0 to 256. This command history feature is particularly useful for recalling long or complex commands. To change the number of commands saved in the history buffer for a terminal session, issue the terminal history size command: Router# terminal history size num

A command history buffer is also available in line configuration mode with the same default and configuration options. To set the command history buffer size for a terminal session in line configuration mode, issue the history command: Router(config-line)# history [size num]

To recall commands from the history buffer, use the following methods: Press Ctrl-P or the Up Arrow keyRecalls commands beginning with the most recent command.

Repeat the key sequence to recall successively older commands. Press Ctrl-N or the Down Arrow keyRecalls the most recent commands in the history buffer after

they have been recalled using Ctrl-P or the Up Arrow key. Repeat the key sequence to recall successively more recent commands.

Note The arrow keys function only on ANSI-compatible terminals such as the VT100. 1-10Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Issue the show history command in user EXEC or privileged EXEC modeLists the most recent

commands that you entered. The number of commands that are displayed is determined by the setting of the terminal history size and history commands. The command history feature is enabled by default. To disable this feature for a terminal session, issue the terminal no history command in user EXEC or privileged EXEC mode or the no history command in line configuration mode.

Abbreviating CommandsTyping a complete command name is not always required for the command to execute. The CLI recognizes an abbreviated command when the abbreviation contains enough characters to uniquely identify the command. For example, the show version command can be abbreviated as sh ver. It cannot be abbreviated as s ver because s could mean show, set, or systat. The sh v abbreviation also is not valid because the show command has vrrp as a keyword in addition to version.

Using Aliases for CLI CommandsTo save time and the repetition of entering the same command multiple times, you can use a command alias. An alias can be configured to do anything that can be done at the command line, but an alias cannot move between modes, type in passwords, or perform any interactive functions.Table 1-4 shows the default command aliases.

To create a command alias, issue the alias command in global configuration mode. The syntax of the command is alias mode command-alias original-command. Following are some examples:

Router(config)# alias exec prt partitionprivileged EXEC mode Router(config)# alias configure sb source-bridgeglobal configuration mode Router(config)# alias interface rl rate-limitinterface configuration mode

To view both default and user-created aliases, issue the show alias command.For more information about the alias command, see http://www.cisco.com/en/US/docs/ios/fundamentals/command/reference/cf_book.html.

Table 1-4 Default Command Aliases

Command Alias Original Command

h helplo logoutp pings showu or un undebugw where1-11Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 1 Using the Command-Line Interface in Cisco IOS XE Software Using the CLIUsing the no and default Forms of CommandsMost configuration commands have a no form that is used to reset a command to its default value or to disable a feature or function. For example, the ip routing command is enabled by default. To disable this command, you would issue the no ip routing command. To re-enable IP routing, you would issue the ip routing command. Configuration commands may also have a default form, which returns the command settings to their default values. For commands that are disabled by default, using the default form has the same effect as using the no form of the command. For commands that are enabled by default and have default settings, the default form enables the command and returns the settings to their default values. To see what default commands are available on your system, enter default ? in the appropriate command mode of the command-line interface.The no form is documented in the command pages of Cisco IOS command references. The default form is generally documented in the command pages only when the default form performs a function different than that of the plain and no forms of the command. Command pages often include a Command Default section as well. The Command Default section documents the state of the configuration if the command is not used (for configuration commands) or the outcome of using the command if none of the optional keywords or arguments is specified (for EXEC commands).

Using the debug CommandA debug command produces extensive output that helps you troubleshoot problems in your network. These commands are available for many features and functions within Cisco IOS XE software. Some debug commands are debug all, debug aaa accounting, and debug mpls packets. To use debug commands during a Telnet session with a device, you must first enter the terminal monitor command. To turn off debugging completely, you must enter the undebug all command. For more information about debug commands, see the Cisco IOS Debug Command Reference at http://www.cisco.com/en/US/docs/ios/debug/command/reference/db_book.html.

Caution Debugging is a high priority and high CPU utilization process that can render your device unusable. Use debug commands only to troubleshoot specific problems. The best times to run debugging are during periods of low network traffic and when few users are interacting with the network. Debugging during these periods decreases the likelihood that the debug command processing overhead will affect network performance or user access or response times.

Filtering Output Using Output ModifiersMany commands produce lengthy output that may use several screens to display. You can use output modifiers to filter this output to show only the information that you want to see. The following three output modifiers are available:

begin regular-expressionDisplays the first line in which a match of the regular expression is found and all lines that follow.

include regular-expressionDisplays all lines in which a match of the regular expression is found.1-12Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 1 Using the Command-Line Interface in Cisco IOS XE Software Saving Changes to a Configuration

exclude regular-expressionDisplays all lines except those in which a match of the regular

expression is found.

To use one of these output modifiers, type the command followed by the pipe symbol (|), the modifier, and the regular expression that you want to search for or filter. A regular expression is a case-sensitive alphanumeric pattern. It can be a single character or number, a phrase, or a more complex string. The following example illustrates how to filter output of the show interface command to display only lines that include the expression protocol. Router# show interface | include protocol

FastEthernet0/0 is up, line protocol is upSerial4/0 is up, line protocol is upSerial4/1 is up, line protocol is upSerial4/2 is administratively down, line protocol is downSerial4/3 is administratively down, line protocol is down

Understanding CLI Error MessagesYou may encounter some error messages while using the CLI. Table 1-5 shows the common CLI error messages.

For more system error messages, see Cisco IOS XE System Messages.

Saving Changes to a ConfigurationTo save changes that you made to the configuration of a device, you must issue the copy running-config startup-config command or the copy system:running-config nvram:startup-config command. When you issue these commands, the configuration changes that you made are saved to the startup configuration and saved when the software reloads or power to the device is turned off or interrupted.

Table 1-5 Common CLI Error Messages

Error Message Meaning How to Get Help

% Ambiguous command: show con

You did not enter enough characters for the command to be recognized.

Reenter the command followed by a space and a question mark (?). The keywords that you are allowed to enter for the command appear.

% Incomplete command. You did not enter all the keywords or values required by the command.

Reenter the command followed by a space and a question mark (?). The keywords that you are allowed to enter for the command appear.

% Invalid input detected at ^ marker.

You entered the command incorrectly. The caret (^) marks the point of the error.

Enter a question mark (?) to display all the commands that are available in this command mode. The keywords that you are allowed to enter for the command appear.1-13Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 1 Using the Command-Line Interface in Cisco IOS XE Software Additional Information

The following example shows the syntax of the copy running-config startup-config command:

Router# copy running-config startup-configDestination filename [startup-config]?

You press Enter to accept the startup-config filename (the default), or type a new filename and then press Enter to accept that name. The following output is displayed indicating that the configuration was saved:Building configuration...[OK]Router#

On most platforms, the configuration is saved to NVRAM. On platforms with a Class A flash file system, the configuration is saved to the location specified by the CONFIG_FILE environment variable. The CONFIG_FILE variable defaults to NVRAM.

Additional Information Part 1: Using the Cisco IOS Command-Line Interface (CLI) of the Cisco IOS XE Configuration

Fundamentals Configuration Guidehttp://www.cisco.com/en/US/docs/ios/ios_xe/fundamentals/configuration/guide/2_xe/cf_xe_book.html or

Using Cisco IOS XE Software chapter of the Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guidehttp://www.cisco.com/en/US/docs/routers/asr1000/configuration/guide/chassis/Using_CLI.html

Cisco Product Support Resources http://www.cisco.com/go/techdocs

Support area on Cisco.com (also search for documentation by task or product)http://www.cisco.com/en/US/support/index.html

Software Download Center (downloads; tools; licensing, registration, advisory, and general information) (requires Cisco.com user ID and password)http://www.cisco.com/kobayashi/sw-center/

Error Message Decoder, a tool to help you research and resolve error messages for Cisco IOS XE software http://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi

Command Lookup Tool, a tool to help you find detailed descriptions of Cisco IOS XE commands (choose Select an index: IOS > Select a release: All IOS Commands) (requires Cisco.com user ID and password)http://tools.cisco.com/Support/CLILookup

Output Interpreter, a troubleshooting tool that analyzes command output of supported show commandshttps://www.cisco.com/pcgi-bin/Support/OutputInterpreter/home.pl1-14Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Signaling SBC functionManaged by the sigsignaling messages to the core of the networkdoes this by acting as a Session Initiation Pronaling border element (SBE), controls access of VoIP , and manipulates the contents of these messages. It tocol (SIP) back-to-back user agent (B2BUA).C H A P T E R 2Cisco Unified Border Element (SP Edition) Overview

This chapter presents an overview of Cisco Unified Border Element (SP Edition) on the Cisco ASR 1000 Series Aggregation Services Routersits signaling and media functions, unified and distributed deployment models, supported features, and supported MIBs.Cisco Unified Border Element (SP Edition) was formerly known as Integrated Session Border Controller and may be commonly referred to in this document as the session border controller (SBC).

Contents Cisco Unified Border Element (SP Edition) on the Cisco ASR 1000 Series Routers, page 2-15 Cisco Unified Border Element (SP Edition) on the Cisco ASR 1001 Series Routers, page 2-19 Supported MIBs, page 2-19

Cisco Unified Border Element (SP Edition) on the Cisco ASR 1000 Series Routers

Cisco Unified Border Element (SP Edition) enables direct IP-to-IP interconnect between multiple administrative domains for session-based services providing protocol interworking, security, and admission control and management. Cisco Unified Border Element (SP Edition) is a voice over IP (VoIP) device that sits on the border of a network and controls call admission to that network.Cisco Unified Border Element (SP Edition) protects the interior of the network from excessive call load and malicious traffic. Cisco Unified Border Element (SP Edition) provides additional functions such as media bridging and billing services.Cisco Unified Border Element (SP Edition) is integrated into the Cisco IOS Software and does not require any additional hardware to run.The SBC service includes two functional areas:2-15ent (SP Edition) Configuration Guide: Unified Model

Chapter 2 Cisco Unified Border Element (SP Edition) Overview Cisco Unified Border Element (SP Edition) on the Cisco ASR 1000 Series Routers

Media SBC functionManaged by the data border element (DBE), controls access of media packets

to the network, provides differentiated services and quality of service (QoS) for different media streams, and prevents service theft. It does this by acting as a real-time transport protocol (RTP) proxy.

For Cisco IOS XE Release 2.4, Cisco Unified Border Element (SP Edition) can operate in two modes or deployment models:

UnifiedIn the unified model, both the SBE and DBE logical entities co-exist on the same network element. In this model, the signaling entity controls the media local to the router. Simply put, the SBE handles the SIP and H.323 packets and the DBE handles the RTP and RTCP packets.

DistributedIn the distributed model, the SBE and the DBE entities reside on two different network elements. Logically, each of the SBE entities controls multiple DBE elements, and each DBE could be controlled by multiple SBE entities. The SBE interacts with the DBE entities using a session controller interface (SCI). The SCI interface supports the H.248 protocol.In this model, the bearer always flows through the DBE, and the SBE participates only in the signaling flow. This model is typically used in conjunction with a third-party SBE that supports the DBE H.248 profile.

Note It is important to note that the DBE configuration is still required when running in the unified model because the DBE configuration provides the information necessary for the RTP media to flow.

Note For Cisco IOS XE Release 2.3 and earlier, the SBC supports only DBEs in the distributed model.2-16Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Figure 2-1 illustrates the unified mode. Figure 2-2 illustrates the relationships between SBEs, DBEs, and

other network elements.

Figure 2-1 Relationships Between SBEs/DBEs and Other Network Elements in the Unified Model

SBE/DBE

UM

UM

Signaling

Media

PSTN28

0718

V

V

V

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Figure 2-2 Relationships Between SBEs/DBEs and Other Network Elements in the Distributed

Model

DBElocation 1

SBE

DBElocation 3

V

DBElocation 2

In this diagram, adjacencies 1, 2, and 3 have been associated with the respective DBE locations. The first (double line) call comes in over adjacency 1 and is routed over adjacency 3. The second (single line) call comes over adjacency 2 and is routed over adjacency 3.The SBE picks a DBE from the appropriate location to process the call media.

SignalingSoftswitch

Adjacency 3

Adjacency 1

Adjacency 2

MediaPSTN

1495

93

V

V

V

V

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Chapter 2 Cisco Unified Border Element (SP Edition) Overview Cisco Unified Border Element (SP Edition) on the Cisco ASR 1001 Series RoutersCisco Unified Border Element (SP Edition) on the Cisco ASR 1001 Series Routers

Table 2-1 list the scaling and performance that is supported on the Cisco ASR 1001 Series Routers.

Supported MIBs The following MIBs are supported Cisco IOS XE Release 2.4 and later for the SBC on the Cisco ASR 1000 Series Router:

CISCO-SESSION-BORDER-CONTROLLER-EVENT-MIB CISCO-SESSION-BORDER-CONTROLLER-CALL-STATS-MIB

For more information about MIB support on a Cisco ASR 1000 Series Routers, refer to the Cisco ASR 1000 Series Aggregation Services Routers MIB Specifications Guide at:http://www.cisco.com/en/US/docs/routers/asr1000/mib/guide/asr1kmib.htmlTo locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at:http://tools.cisco.com/ITDIT/MIBS/servlet/indexIf Cisco MIB Locator does not support the MIB information that you need, you can also obtain a list of supported MIBs and download MIBs from the Cisco MIBs page at:http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtmlTo access Cisco MIB Locator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to [email protected]. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you.

Table 2-1 Scaling and Performance Supported on Cisco ASR 1001 Series Routers

Platform HT=180 RP CPUQFP CPU

Degradation CPS %

Reasons for Congestion Memory Setup Throughput Value Feature

ASR 1001 1 RU CPS=60 33% 40% NA Memory Default 5000K NAASR 1001 1 RU CPS=57 66% 78% NA Memory Default 2500L NA2-19Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Prerequisites

In the unified mode, you must configure the SBE before the DBE.C H A P T E R 3Configuring Cisco Unified Border Element (SP Edition)

This chapter describes how to configure the data border element (DBE) and signaling border element (SBE) for Cisco Unified Border Element (SP Edition). Note that the DBE configuration is still required when running in the unified model because the DBE configuration provides the information necessary for the RTP media to flow.Cisco Unified Border Element (SP Edition) was formerly known as Integrated Session Border Controller and may be commonly referred to in this document as the session border controller (SBC).For a complete description of the commands used in this chapter, refer to the Cisco Unified Border Element (SP Edition) Command Reference: Unified Model at: http://www.cisco.com/en/US/docs/ios/sbc/command/reference/sbcu_book.htmlFor information about all Cisco IOS commands, use the Command Lookup Tool athttp://tools.cisco.com/Support/CLILookup or a Cisco IOS master commands list.

Configuring Unified ModelThis section contains the following information on configuring the unified model:

Configuring SBE in the Unified Model, page 3-21 Memory Alerting, page 3-30 Configuring Memory Alerting, page 3-31 Configuring DBE in the Unified Model, page 3-32 Image Upgrade Procedure for Cisco Unified Border Element (SP Edition), page 3-34

Configuring SBE in the Unified ModelThis section describes how to configure a SBE on a Cisco ASR 1000 Series Routers: 3-21ent (SP Edition) Configuration Guide: Unified Model

Chapter 3 Configuring Cisco Unified Border Element (SP Edition) Configuring Unified Model

You need to configure blacklisting to override default blacklisting thresholds when the SBE is

configured and before you start using Cisco Unified Border Element (SP Edition). See the Dynamic Blacklisting Behavior, page -311 for configuration information.

When running Cisco Unified Border Element (SP Edition) with 500 or more active calls, configure the huge buffer size to 65535 bytes with the buffer huge size 65535 command. The increased buffer size is required because by default Cisco IOS software sets the huge buffer size to be 18084 bytes, which is not large enough for audit responses when there are more than 500 active calls.

Configuration Tip

We strongly recommend you use different addresses for signaling and media addresses to avoid scenarios where reservation for media port range can prevent call signaling packets from reaching the route processor (RP). In this scenario, if the SBC attempts to receive a call using a port that has been reserved by the SBC for media, packets will be dropped, rather than forwarded to the RP. This type of scenario is more likely to occur for H.323 and SIP calls using TCP transport.

SUMMARY STEPS

1. configure2. sbc sbc-name 3. sbe 4. adjacency sip adjacency-name5. signaling-address ipv4 ipv4_IP_address6. signaling-port port_num7. remote-address ipv4 ip-address ip-mask 8. signaling-peer peer_name9. signaling-peer-port port_num

10. attach

11. exit12. adjacency sip adjacency-name13. signaling-address ipv4 ipv4_IP_address14. signaling-port port_num15. remote-address ipv4 ip-address ip-mask 16. signaling-peer peer_name17. signaling-peer-port port_num18. attach

19. call-policy-set policy-set-id20. first-call-routing-table table-name21. rtg-src-adjacency-table table-id22. entry entry-id23. action 24. dst-adjacency target-adjacency3-22Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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25. match-adjacency key

26. exit27. entry entry-id28. action 29. dst-adjacency target-adjacency30. match-adjacency key31. complete

32. active-call-policy-set policy-set-id33. activate34. end3-23Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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DETAILED STEPSCommand or Action Purpose

Step 1 configure terminal

Example:Router# configure terminal

Enters global configuration mode.

Step 2 sbc sbc-name

Example:Router(config)# sbc mySbc

Creates the SBC service on Cisco Unified Border Element (SP Edition) and enters into SBC configuration mode.

Step 3 sbe

Example:Router(config-sbc)# sbe

Enters the mode of the signaling border element (SBE) function of the SBC.

Step 4 adjacency sip adjacency-name

Example:Router(config-sbc-sbe)# adjacency sipAccess

Enters the mode of an SBE SIP adjacency.Use the adjacency-name argument to define the name of the service.Note A functional SBC needs a minimum of two

adjacencies configured.Step 5 signaling-address ipv4 ipv4_IP_address

Example:Router(config-sbc-sbe-adj-sip)# signaling-address ipv4 88.103.29.100

Specifies the local IPv4 signaling address of the SIP adjacency.

Step 6 signaling-port port_num

Example:Router(config-sbc-sbe-adj-sip)# signaling-port 5060

Specifies the local signaling port of the SIP adjacency.

Step 7 remote-address ipv4 ip-address ip-mask

Example:Router(config-sbc-sbe-adj-sip)# remote-address 200.200.200.0 255.255.255.0

Restricts the set of remote signaling peers contacted over the adjacency to those with the given IP address prefix.

Step 8 signaling-peer peer_address

Example:Router(config-sbc-sbe-adj-sip)# signaling-peer 200.200.200.118

Specifies the remote signaling peer for the SIP adjacency to use.

Step 9 signaling-peer-port port_num

Example:Router(config-sbc-sbe-adj-sip)# signaling-peer-port 5060

Specifies the remote signaling-peer port for the SIP adjacency to use.3-24Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 3 Configuring Cisco Unified Border Element (SP Edition) Configuring Unified ModelStep 10 attach

Example:Router(config-sbc-sbe-adj-sip)#

Attaches the adjacency.

Step 11 exit

Example:Router(config-sbc-sbe-adj-sip)# exit

Exits SBE SIP adjacency configuration mode and enters SBE mode.

Step 12 adjacency sip adjacency-name

Example:Router(config-sbc-sbe)# adjacency sipCore

Enters the mode of an SBE SIP adjacency.Use the adjacency-name argument to define the name of the service.

Step 13 signaling-address ipv4 ipv4_IP_address

Example:Router(config-sbc-sbe-adj-sip)# signaling-address ipv4 88.103.33.100

Specifies the local IPv4 signaling address of the SIP adjacency.

Step 14 signaling-port port_num

Example:Router(config-sbc-sbe-adj-sip)# signaling-port 5060

Specifies the local signaling port of the SIP adjacency.

Step 15 remote-address ipv4 ip-address ip-mask

Example:Router(config-sbc-sbe-adj-sip)# remote-address 200.200.200.0 255.255.255.0

Restricts the set of remote signaling peers contacted over the adjacency to those with the given IP address prefix.

Step 16 signaling-peer peer_address

Example:Router(config-sbc-sbe-adj-sip)# signaling-peer 200.200.200.118

Specifies the remote signaling peer for the SIP adjacency to use.

Step 17 signaling-peer-port port_num

Example:Router(config-sbc-sbe-adj-sip)# signaling-peer-port 5060

Specifies the remote signaling-peer port for the SIP adjacency to use.

Step 18 attach

Example:Router(config-sbc-sbe-adj-sip)# attach

Attaches the adjacency.

Command or Action Purpose3-25Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 3 Configuring Cisco Unified Border Element (SP Edition) Configuring Unified ModelStep 19 call-policy-set policy-set-id

Example:Router(config-sbc-sbe-callpolicy)# call-policy-set 1

Enters the mode of routing policy set configuration within an SBE entity, creating a new policy set, if necessary.Note There can only be one call policy set at any given

time.

Step 20 first-call-routing-table table-name

Example:Router(config-sbc-sbe-callpolicy)# first-call-routing-table start-table

Configures the name of the first policy table to process when performing the routing stage of policy for new-call events.

Step 21 rtg-src-adjacency-table table-id

Example:Router(config-sbc-sbe-callpolicy)# rtg-src-adjacency-table start-table

Enters the configuration mode of a routing table (creating one if necessary) within the context of an SBE policy set whose entries match the source adjacency.

Step 22 entry entry-id

Example:Router(config-sbc-sbe-callpolicy-rtgtable)# entry 1

Enters the mode for configuring an entry in a routing table, creating the entry if necessary.

Step 23 action [next-table goto-table-name | complete | reject]

Example:Router(config-sbc-sbe-callpolicy-rtgtable-entry)# action complete

Configures the action to take if this routing entry is chosen. Possible actions are:

Set the name of the next routing table to process if the event matches this entry. This is done using the next-table keyword and the goto-table-name argument.

Complete the action using the complete keyword. Reject the indicated action using the reject keyword.

Step 24 dst-adjacency target-adjacency

Example:Router(config-sbc-sbe-callpolicy-rtgtable-entry) # dst-adjacency Core

Configures the destination adjacency of an entry in a routing table.

Step 25 match-adjacency target-adjacency

Example:Router(config-sbc-sbe-rtgpolicy-rtgtable-entry)# match-adjacency Access

Configures the match value of an entry in a number analysis or routing table whose entries match against the source adjacency.

Step 26 exit

Example:Router(config-sbc-sbe-rtgpolicy-rtgtable-entry)# exit

Exits mode for configuring an entry in a routing table and enters configuration mode of a routing table to create an entry.


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Chapter 3 Configuring Cisco Unified Border Element (SP Edition) Configuring Unified ModelStep 27 entry entry-id

Example:Router(config-sbc-sbe-callpolicy-rtgtable)# entry 2

Enters the mode for configuring an entry in a routing table, creating the entry if necessary.

Step 28 action [next-table goto-table-name | complete | reject]

Example:Router(config-sbc-sbe-callpolicy-rtgtable-entry)# action complete

Configures the action to take if this routing entry is chosen. Possible actions are:

Set the name of the next routing table to process if the event matches this entry. This is done using the next-table keyword and the goto-table-name argument.

Complete the action using the complete keyword. Reject the indicated action using the reject keyword.

Step 29 dst-adjacency target-adjacency

Example:Router(config-sbc-sbe-callpolicy-rtgtable-entry)# dst-adjacency Access

Configures the destination adjacency of an entry in a routing table.

Step 30 match-adjacency target-adjacency

Example:Router(config-sbc-sbe-rtgpolicy-rtgtable-entry)# match-adjacency Core

Configures the match value of an entry in a number analysis or routing table whose entries match against the source adjacency.

Step 31 complete

Example:Router(config-sbc-sbe-cacpolicy-cactable-entry)# complete

Completes the CAC policy set when you have committed the full set.

Step 32 active-call-policy-set policy-set-id

Example:Router(config-sbc-sbe)# active-call-policy-set 1

Sets the active routing policy set within an SBE entity.

Step 33 activate

Example:Router(config-sbc-sbe)# activate

Initiates the SBC service.

Step 34 end

Example:Router(config-sbc-sbe)# end

Exits SBC-DBE configuration mode and returns to EXEC mode.


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Chapter 3 Configuring Cisco Unified Border Element (SP Edition) Configuring Unified ModelModifying Existing Call Policy Set

A policy set is a group of policies that can be active on Cisco Unified Border Element (SP Edition) at any one time. If a policy set is active, then Cisco Unified Border Element (SP Edition) uses the rules defined within it to apply policy to events. Routing and number analysis are configured in a call policy set.

Only one policy set of each type can be active at any given time. You can switch the active policy set at any time. You cannot modify the currently active policy set without deactivating it. However you can modify policy sets that are not active. A policy set can be deleted, provided that it is not the active policy set.

To modify an existing call policy set, you must first deactivate it with the no active call-policy-set command and then execute a no complete command.The following task deactivates the active call-policy-set.

SUMMARY STEPS

1. configure2. sbc service-name3. sbe4. no active-call-policy-set policy-set-id5. no complete

6. exit

DETAILED STEPS

Command or Action Purpose

Step 1 configure

Example:Router# configure

Enables global configuration mode.

Step 2 sbc sbc-name

Example:Router(config)# sbc mysbc

Creates the SBC service on Cisco Unified Border Element (SP Edition) and enters into SBC configuration mode.

Step 3 sbe


Enters the mode of an SBE entity within an SBC service.

Step 4 no active-call-policy-set policy-set-id

Example:Router(config-sbc-sbe)# no active-call-policy-set 1

deactivates the active routing policy set within an SBE entity.3-28Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 3 Configuring Cisco Unified Border Element (SP Edition) Configuring Unified ModelReplacing an Existing Call Policy Set

Only one policy set of each type can be active at any given time. You can replace or switch the active policy set at any time. To do that, first deactivate the existing call policy set. Then activate the new call policy set for it to take effect.

SUMMARY STEPS

1. configure2. sbc service-name3. sbe4. no active-call-policy-set policy-set-id5. active-call-policy-set policy-set-id6. complete

7. exit

DETAILED STEPS

Step 5 no complete

Example:Router(config-sbc-sbe-cacpolicy-cactable-entry)# no complete

Does not complete the active routing policy set.

Step 6 exit


Exits the current mode of the configuration.



Step 1 configure

Example:Router# configure

Enables global configuration mode.

Step 2 sbc service-name

Example:Router(config)# sbc mysbc

Enters the mode of an SBC service. Use the service-name argument to define the name of

the service.

Step 3 sbe


Enters the mode of an SBE entity within an SBC service.3-29Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

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Chapter 3 Configuring Cisco Unified Border Element (SP Edition) Configuring Unified ModelMemory AlertingThe Memory Alerting feature enables you to configure the number of active calls on an SBC based on the amount of free memory available on the device.For example, an ASR1000 may support 5000 maximum active calls and support other features as well. In a scenario where the upper limit to the active calls is not configured, and other non-SBC features are also in use, there is a possibility that the SBC might use the system memory to a point that even the basic functions of the ASR1000 gets affected due to memory fragmentation or lack of memory.The Memory Alerting feature enables you to configure thresholds and drop rates for various memory availability levels. This prevents the SBC from consuming memory for new calls or call registrations.The Memory Alerting feature consists of four levels, Minor, Major, Critical, and Halt. The levels are defined based on the amount of processor memory available at a given time. Processor memory is checked after every ten new calls to determine the memory available. You can configure the percentage of memory available to trigger each level, and define the number of calls to be rejected (0 to 10) from a set of 10 calls. Table 3-1 represents the default percentages and drop rates.

Step 4 no active-call-policy-set policy-set-id

Example:Router(config-sbc-sbe)# no active-call-policy-set 1

Deactivates the active routing policy set within an SBE entity.

Step 5 active-call-policy-set policy-set-id

Example:Router(config-sbc-sbe)# active-call-policy-set 6

Activates the new active routing policy set that is replacing the prior active routing policy set.

Step 6 complete

Example:Router(config-sbc-sbe-cacpolicy-cactable-entry)# no complete

Completes the active routing policy set.

Step 7 exit


Exits the current mode of the configuration.


Table 3-1 SBC Memory Alerting Levels, Default Memory Percentages, and Calls Rejected

LevelDefault Percentage of Memory Remaining Number of Calls Rejected

Minor