Network Router User Manual

CHAPTER

1-1

Cisco IOS XE Integrated Session Border Controller Configuration Guide for the Cisco ASR 1000 Series Aggregation Services Routers

OL-15421-01

Integrated Session Border Controller for the

Cisco ASR 1000 Series Routers Overview

This chapter presents an overview of the Integrated Session Border Controller (SBC), supported

features, and deployment of the Integrated Session Border Controller on the Cisco ASR 1000 Series

Routers.

Contents

• General Overview, page 1-1

• Supported Integrated Session Border Controller Features, page 1-4

• Deployment of the Integrated Session Border Controller, page 1-8

• Integrated Session Border Controller DBE Deployment Scenario, page 1-8

General Overview

The Integrated Session Border Controller is integrated with other features on the Cisco ASR 1000 Series

Routers, without requiring additional application-specific hardware, such as service blades. SBC is

integrated with layer 2 and layer 3 services, such as security, QoS, IP Multicast, that eliminate the need

to create an overlay network of standalone SBC appliances. With Integrated SBC, SBC functionality and

routing functionality both reside on the Cisco ASR 1000 Series Router. The integration also allows SBC

to build on the security and admission control features and virtual private network (VPN) awareness of

the Cisco ASR 1000 Series Routers.

In general, session border controllers are used as key components in interconnecting Voice over IP

(VoIP) and multimedia networks of different enterprise customers and service providers. SBCs are

deployed at the edge of networks to meet the need for secure, intelligent border element functions. Using

SBCs, the end user can make voice and video calls to another end user without being concerned about

protocols, network reachability, or safety of the network.

The SBC enables direct IP-to-IP interconnect between multiple administrative domains for

session-based services providing protocol interworking, security, and admission control and

management. The SBC is a session-aware device that controls access to VoIP and other types of

primarily media-related networks. A primary purpose of an SBC is to protect the interior of the network

from excessive call load and malicious traffic.