About The Default Subzone; Configuring Subzones - Cisco TelePresence Administrator's Manual

To configure the ports used for media in traversal calls, go to
Subzone.
Note: you must ensure that the port range is large enough to support the maximum number of traversal calls
available on your VCS. A single traversal call can take up to 20 ports (5 pairs in each direction). So for
example, if your VCS is licensed for 5 traversal calls you must ensure that the range of ports configured for
traversal media is at least 100. If you add extra traversal calls to your system, you must also ensure that the
range of ports available is sufficient.

About the Default Subzone

The Default Subzone page
bandwidth restrictions on calls involving endpoints in the Default Subzone, and to specify the Default
Subzone's registration and authentication policies.
When an endpoint registers with the VCS, its IP address and alias is checked against the subzone
membership rules and it is assigned to the appropriate subzone. If no subzones have been created, or the
endpoint's IP address or alias does not match any of the subzone membership rules, it is assigned to the
Default Subzone (subject to the Default Subzone's Registration policy and Authentication policy).
The use of a Default Subzone on its own (without any other manually configured subzones) is suitable only if
you have uniform bandwidth available between all your endpoints. Note that if your Local Zone contains two
or more different networks with different bandwidth limitations, you should configure separate subzones for
each different part of the network.

Configuring subzones

The Subzones page (VCS configuration > Local Zone >
configured on the VCS, and allows you to create, edit and delete subzones. For each subzone, it shows how
many membership rules it has, how many devices are currently registered to it, and the current number of
calls and bandwidth in use. Up to 1000 subzones can be configured.
After configuring a subzone you should set up the
an endpoint device is assigned to when it registers with the VCS.
Filtering the list
To limit the list of subzones, enter one or more characters in the Filter field and click Filter. Only those
subzones that contain (in any of the displayed fields) the string you entered will be shown.
To return to the full list of subzones, click Reset.
Subzone registration policy
When an endpoint registers with the VCS, its IP address and alias is checked against the subzone
membership rules and it is assigned to the appropriate subzone. If no subzones have been created, or the
endpoint's IP address or alias does not match any of the subzone membership rules, it is assigned to the
Default Subzone.
In addition to using a registration restriction policy
you can also configure each manually created subzone and the Default Subzone as to whether it will accept
registrations assigned to it via the subzone membership rules.
This provides additional flexibility when defining your registration policy. For example you can:
Cisco VCS Administrator Guide (X7.1)
(VCS configuration > Local Zone > Default
Subzone membership rules
to control whether an endpoint can register with the VCS,
VCS configuration > Local Zone > Traversal
Subzone) is used to place
Subzones) lists all the subzones that have been
which control which subzone
Bandwidth control
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