Configuring Traversal Server Zones - Cisco TelePresence Administrator's Manual

Field Description
Peer 1 to Peer The IP address or FQDN of the traversal server.
6 address
If the traversal server is a VCS Expressway cluster,
n
this should include all of its peers.
If the traversal server is a TANDBERG Border
n
Controller, this should include all its Alternates.

Configuring traversal server zones

A VCS Expressway is able to act as a traversal server, providing firewall traversal on behalf of traversal
clients (for example, VCS Controls or gatekeepers).
To act as a traversal server, the VCS Expressway must have a special type of two-way relationship with
each traversal client. To create this connection, you create a traversal server zone on your local VCS
Expressway and configure it with the details of the corresponding zone on the traversal client. (The client
must also be configured with details of the VCS Expressway.)
After you have neighbored with the traversal client you can:
provide firewall traversal services to the traversal client
n
query the traversal client about its endpoints
n
apply transforms to any queries before they are sent to the traversal client
n
control the bandwidth used for calls between your local VCS and the traversal client
n
Note: traversal client-server zone relationships must be two-way. For firewall traversal to work, the traversal
server and the traversal client must each be configured with the other's details (see
client and server for more information). The client and server will then be able to communicate over the
firewall and query each other. For full details on how traversal client zones and traversal server zones work
together to achieve firewall traversal, see
An NTP server must be configured for traversal zones to work.
The configurable options for a traversal server zone are:
Field Description
Configuration section:
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. Select Traversal server.
Hop count The hop count is the number of times a request will
be forwarded to a neighbor gatekeeper or proxy (see
the Hop counts
field specifies the hop count to use when sending a
search request to this particular zone.
Connection credentials section:
Cisco VCS Administrator Guide (X7.1)
About firewall traversal.
section for more information). This
Zones and neighbors
Usage tips
See Neighboring the local VCS to
another VCS cluster for more
information.
Configuring a traversal
Usage tips
After a zone has been created, the Type
cannot be changed.
If the search request was received from
another zone and already has a hop
count assigned, the lower of the two
values is used.
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