About Zones; Default Zone; Zone Configuration - Cisco TelePresence Video Communication Server Administrator's Manual

About zones

A zone is a collection of endpoints, either all registered to a single system (for example a VCS,
Gatekeeper, or Border Controller), or located in a certain way such as via an ENUM or DNS lookup.
Zones are used to:
control through links whether calls can be made between your local subzones and these other
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zones
manage the bandwidth of calls between your local subzones and endpoints in other zones
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search for aliases that are not registered locally
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control the services available to endpoints within that zone through the VCS's
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You can configure up to 1000 zones. Each zone is configured as one of the following zone types:
Neighbor: a connection to a neighbor system of the local VCS.
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Traversal client: the local VCS is a traversal client of the system being connected to, and there is a
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firewall between the two.
Traversal server: the local VCS is a traversal server for the system being connected to, and there is
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a firewall between the two.
ENUM: the zone contains endpoints discoverable by ENUM lookup.
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DNS: the zone contains endpoints discoverable by DNS lookup.
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The VCS also has a pre-configured Default Zone.
See the

Zone configuration

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zone types.
See the Configuring search and zone transform rules
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as targets for search rules.

Default Zone

Any incoming calls from endpoints or other devices that are unregistered or not recognized as
belonging to the Local Zone or any of the existing configured zones are deemed to be coming from the
Default Zone.
The VCS comes pre-configured with the Default Zone and
Subzone and the Traversal Subzone. The purpose of the Default Zone is to manage incoming calls
from unrecognized endpoints to the VCS. You can do this by:
deleting the default links; this prevents any incoming calls from unrecognized endpoints
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applying pipes to the default links; this lets you control the bandwidth consumed by incoming calls
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from unrecognized endpoints
configuring the Default Zone's Authentication Policy
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Note that the Default Zone cannot be deleted and its only configurable option is its Authentication
Policy setting.
Zone configuration
The Zones page (VCS configuration >
VCS, and lets you create, edit and delete zones.
To neighbor with another system (such as another VCS or gatekeeper), create a connection over a
firewall to a traversal server or traversal client, or discover endpoints via an ENUM or DNS lookup,
you must configure a zone on the local VCS. The VCS also has a pre-configured Default Zone which
cannot be deleted.
When adding a new zone you must specify its Type. The zone type indicates the nature of the
connection and determines which configuration options are available. For traversal server zones,
Cisco VCS Administrator Guide (X6.1)
section for information about the configuration options available for all
Zones) lists all the zones that have been configured on the
section for information about including zones
default links between it and both the Default
Zones and neighbors
Authentication Policy
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