Chapter 1 Integrated Session Border Controller for the Cisco ASR 1000 Series Routers Overview
Deployment of the Integrated Session Border Controller
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Release | Feature Name | Related SBC Commands | Documented |
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Cisco IOS |
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XE Release |
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2.0.1 |
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Cisco IOS | Chapter 5, “Quality of | ||
XE Release | and Marking | Service and Bandwidth | |
2.0 |
| Management” | |
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| show sbc dbe |
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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
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 Integrated Session Border Controller Configuration Guide for the Cisco ASR 1000 Series Aggregation Services Routers
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