Cisco ASR 1000 Configuration Guide

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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 21 Overview of the Cisco WebEx Node for ASR 1000 Series
Overview of the Cisco WebEx Node SPA Environment
The Cisco WebEx Node SPA is a full-height SPA designed to run an application that is part of the Cisco
WebEx Data Center. The Cisco WebEx node SPA improves the functionality of WebEx meeting services
by adding the meeting servers into the SPA itself. This technology provides the following advantages:
• Improves performance for users inside the company firewall.
• Reduces the bandwidth going out of the company firewall (to the WebEx Data Center).
• Provides better security by reducing traffic outside the company firewall.
Software that runs on the Cisco WebEx Node for the ASR 1000 Series includes Cisco WebEx
collaboration cloud software components that are integral to meeting collaboration and voice and video
conferencing. By moving these components and functions into the Cisco WebEx node SPA, the Cisco
WebEx clients in the enterprise network need only connect to the Cisco WebEx node SPA. This reduces
the traffic between the enterprise network and the Cisco WebEx Data Center, greatly reducing the
customer’s Internet bandwidth requirements.
By moving the switching components of the Cisco WebEx collaboration cloud into the Cisco WebEx
Node for ASR 1000 Series, the Cisco WebEx clients in the enterprise network need only connect to the
Cisco WebEx Node SPA. This reduces the traffic between the enterprise network and the Cisco WebEx
Data Center, greatly reducing the customer’s Internet bandwidth requirements, as shown in
Figure 21-1.
Instead of individual meeting streams from the Cisco WebEx Data Center to the enterprise, the use of
the Cisco ASR 1000 Series router to implement some of the Cisco WebEx conferencing functions, allows
for a single meeting stream from the Cisco WebEx Data Center to support enterprise conferencing traffic.
Figure 21-1 Cisco WebEx Network
Each Cisco WebEx node SPA can be configured to perform either web conferencing or voice/video
conferencing, but not both features at the same time. Each Cisco WebEx node SPA uses the same
software package that includes both features; the conferencing features that actually run on each SPA
are determined by the Cisco WebEx Service Plan the customer has purchased. The WebEx Data Center
retains the Cisco WebEx node SPA configuration files that the SPA retrieves each time the SPA boots.
Multiple Cisco WebEx node SPAs can be installed on the same Cisco ASR 1000 Series Router to
increase performance or to provide coverage for both media and video/VoIP sessions.
Enterprise InternetCisco
WebEx
WebEx
User
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Cisco
ASR 1000
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WAN
WebEx
Data Center
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Data, VoIP,
Video
Single meeting
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QFP
276273

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English