Configuring Neighbor Zones - Cisco TelePresence Video Communication Server Administrator's Manual

traversal client zones and neighbor zones this includes providing information about the neighbor
system such as its IP address and ports.
Note: connections between the VCS and neighbor systems must be configured to use the same SIP
transport type, that is they must both be configured to use TLS or both be configured to use TCP. In
software versions prior to X5.1 a connection could be established if one system was configured to use
TLS and the other used TCP. Any connection failures due to transport type mismatches are recorded
in the Event Log.
After creating a zone you would normally make it a target of at least one of your zone policy
rules (VCS configuration > Dial plan > Search
that zone.
Common zone configuration options
The zone configuration options depend upon the zone Type, however the following options apply to
every zone type:
Field Description
Name The name acts as a unique identifier, allowing you to
distinguish between zones of the same type.
Type The nature of the specified zone, in relation to the local
VCS:
Neighbor: connects the local VCS to a neighbor system.
Traversal client: connects the local VCS to a traversal
server.
Traversal server: connects the local VCS Expressway to a
traversal client.
ENUM: enables ENUM dialing via the local VCS.
DNS: enables the local VCS to locate endpoints and other
systems by using DNS lookups.
Hop The hop count is the number of times a request will be
count forwarded to a neighbor gatekeeper or proxy (see the
counts section for more information). This field specifies the
hop count to use when sending a search request to this
particular zone.

Configuring neighbor zones

A neighbor zone could be a collection of endpoints registered to another system (such as a VCS,
Gatekeeper, or Border Controller), or it could be a SIP device (for example Microsoft Office
Communications Server (OCS) 2007). The other system or SIP device is referred to as a neighbor.
Neighbors can be part of your own enterprise network, part of a separate network, or even standalone
systems.
You create a neighbor relationship with the other system by adding it as a neighbor zone on your local
VCS. After you have added it, you can:
query the neighbor about its endpoints
n
apply transforms to any requests before they are sent to the neighbor
n
Cisco VCS Administrator Guide (X6.1)
rules) otherwise search requests will not be sent to
Usage tips
After a zone has been created,
the Type cannot be changed.
If the search request was
Hop received from another zone
and already has a hop count
assigned, the lower of the two
values is used.
Zones and neighbors
search
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