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Cisco IOS XE Integrated Session Border Controller Configuration Guide for the Cisco ASR 1000 Series Aggregation Services Routers
OL-15421-01
Chapter 1 Integrated Session Border Controller for the Cisco ASR 1000 Series Routers Overview
Deployment of the Integrated Session Border Controller
Deployment of the Integrated Session Border Controller
Deployment of the DBE function on the Cisco ASR 1000 Series Routers integrates a subset of the
Integrated Session Border Controller feature set with Cisco IOS XE software. A likely deployment
scenario is that typical routing and broadband features are configured on the Cisco ASR 1000 Series
Routers serving as the DBE operating with an external SBE. The Integrated Session Border Controller
functionality on the Cisco ASR 1000 Series Routers will eventually comprise both DBE and SBE
functions, with DBE being the first to be deployed.
DBE deployment of the SBC feature set is an optional feature supported on the Cisco ASR 1000 Series
Routers. DBE deployment on the Cisco ASR 1000 Series Routers does not include SBE support and no
SBE-related CLIs are implemented.
In the deployed distributed model, the SBE and the DBE entities reside on different network elements
and the DBE is controlled by one SBE at any one time. The SBE interacts with the DBE using the H.248
Megaco (media gateway controller) protocol. The SBE controls the DBE via the H.248 interface. In this
model, the bearer (or media flow) always flows through the DBE, and the SBE participates only in the
signaling flow.
The DBE is responsible for the media flows and consists of a set of data path functions. The DBE
responds to the requests made by the SBE to open pinholes, taking into account the specified
NAT/firewall traversal and QoS requirements.
For the DBE, a new interface type is defined for the SBC virtual interface. You configure a virtual
interface as part of the SBC configuration and the virtual interface has media IPs as primary or secondary
IP addresses. The SBC virtual interface does not support any existing Cisco IOS features.
The Cisco IOS XE image containing SBC software leverages existing Cisco IOS install and packaging
facilities for software release, delivery, and installation.
Cisco IOS commands have been introduced to configure the DBE. For information on commands, see
the
Cisco IOS Integrated Session Border Controller Command Reference.
Integrated Session Border Controller DBE Deployment Scenario
One potential deployment scenario for Integrated Session Border Controller on the Cisco ASR 1000
Series Routers is in a network architecture where the service provider (SP) provides voice, data, and
video services to their residential broadband customers over a single link.
Cisco IOS
XE Release
2.0.1
transaction-pending command transaction-pending Cisco IOS Integrated
Session Border
Controller Command
Reference
Cisco IOS
XE Release
2.0
Two-Rate Three-Color Policing
and Marking
control-dscp
marker-dscp
pdr-coefficient
show sbc dbe
forwarder-stats
Chapter 5, “Quality of
Service and Bandwidth
Management”
Release Feature Name Related SBC Commands
Chapter Where
Documented