Cisco Cisco Expressway Maintenance Manual
Bandwidth Control
This section describes how to control the bandwidth that is used for calls within your Local Zone, as well as calls out
to other zones (Configuration > Local Zone and Configuration > Bandwidth).
to other zones (Configuration > Local Zone and Configuration > Bandwidth).
About Bandwidth Control
The Expressway allows you to control the amount of bandwidth used by endpoints on your network. This is done by
grouping endpoints into subzones, and then using
grouping endpoints into subzones, and then using
to apply 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.
you to set appropriate bandwidth controls on individual components of your network.
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
be allocated to it, using the command
xCommand CheckBandwidth
.
.
Example network deployment
The following diagram 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 each pool of endpoints has been assigned to a different subzone, so that suitable limitations can be
applied to the bandwidth used within and between each subzone based on the amount of bandwidth they have
available via their internet connections.
applied to the bandwidth used within and between each subzone based on the amount of bandwidth they have
available via their internet connections.
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