Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼

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D14049.08 
November 2010

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CISCO TELEPRESENCE

 VIDEO COMMUNICATION SERVER

ADMINISTRATOR GUIDE

Bandwidth control overview

The diagram below shows a typical network deployment: 

• 

a broadband LAN between the Enterprise and the internet, where high bandwidth calls are acceptable

• 

a pipe to the internet (Pipe A) with restricted bandwidth

• 

two satellite offices, Branch and Home, each with their own internet connections and restricted pipes

In this example we have created new subzones for each pool of endpoints, so that we can apply suitable limitations to the bandwidth used within and 
between each subzone based on the amount of bandwidth they have available via their internet connections. 

The VCS allows you to control the amount 
of bandwidth used by endpoints on your 
network. This is done by grouping endpoints 
into subzones, and then applying limits to the 
bandwidth that can be used:

• 

within each subzone

• 

between a subzone and another subzone

• 

between a subzone and a zone

Bandwidth limits may be set on a call-by-call 
basis and/or on a total concurrent usage basis. 
This flexibility allows you to set appropriate 
bandwidth controls on individual components 
of your network. 
This section describes the different types of 
subzones and how to add and configure them, 
and explains how to use 

 and 

 to 

apply bandwidth controls between subzones 
and zones.

Calls will fail if links are not configured 
correctly. You can check whether a call 
will succeed, and what bandwidth will 

be allocated to it, using the command 

.

For specific information about how 
bandwidth is managed across peers in 
a cluster, see the 

 section.

Bandwidth control on the VCS

Example network deployment