Cisco Cisco TelePresence Video Communication Server Expressway
3.
Configure the fields as follows:
VCS Control
VCS Expressway
Name
Not applicable
Enter exampleauth
Password
Not applicable
Enter ex4mpl3.c0m
4.
Click Create credential.
Configuring Traversal Zones for Unified Communications
To support Unified Communications features such as Mobile and Remote Access or Jabber Guest, there must be a
secure traversal zone connection between the VCS Control and the VCS Expressway:
secure traversal zone connection between the VCS Control and the VCS Expressway:
■
The VCS Control and VCS Expressway must be configured with a zone of type
Unified Communications
traversal. This automatically configures an appropriate traversal zone (a traversal client zone when selected on a
VCS Control, or a traversal server zone when selected on a VCS Expressway) that uses SIP TLS with TLS verify
mode set to
VCS Control, or a traversal server zone when selected on a VCS Expressway) that uses SIP TLS with TLS verify
mode set to
On, and Media encryption mode set to Force encrypted.
■
Both VCSs must trust each other's server certificate. As each VCS acts both as a client and as a server you must
ensure that each VCS’s certificate is valid both as a client and as a server.
ensure that each VCS’s certificate is valid both as a client and as a server.
■
If an H.323 or a non-encrypted connection is also required, a separate pair of traversal zones must be
configured.
configured.
Neighboring Between VCS Clusters
You can neighbor your local VCS (or VCS cluster) to a remote VCS cluster; this remote cluster could be a neighbor,
traversal client, or traversal server to your local VCS. In this case, when a call is received on your local VCS and is
passed via the relevant zone to the remote cluster, it will be routed to whichever peer in that neighboring cluster has the
lowest resource usage. That peer will then forward the call as appropriate to one of its:
traversal client, or traversal server to your local VCS. In this case, when a call is received on your local VCS and is
passed via the relevant zone to the remote cluster, it will be routed to whichever peer in that neighboring cluster has the
lowest resource usage. That peer will then forward the call as appropriate to one of its:
■
locally registered endpoints (if the endpoint is registered to that peer)
■
peers (if the endpoint is registered to another peer in that cluster)
■
external zones (if the endpoint has been located elsewhere)
Lowest resource usage is determined by comparing the number of available traversal calls (maximum - current use) on
the peers, and choosing the peer with the highest number. Peers that are in maintenance mode are not considered.
the peers, and choosing the peer with the highest number. Peers that are in maintenance mode are not considered.
When configuring a connection to a remote cluster, you create a single zone and configure it with details of all the peers
in the cluster. Adding this information to the zone ensures that the call is passed to that cluster regardless of the status of
the individual peers.
in the cluster. Adding this information to the zone ensures that the call is passed to that cluster regardless of the status of
the individual peers.
You also need to enter the IP address of all peers in the remote cluster when the connection is via a neighbor or
traversal client zone. You do not do this for traversal server zones, as these connections are not configured by
specifying the remote system's IP address.
traversal client zone. You do not do this for traversal server zones, as these connections are not configured by
specifying the remote system's IP address.
Note:
Systems that are configured as peers must not also be configured as neighbors to each other, and vice versa.
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Cisco VCS Expressway and VCS Control - Basic Configuration Deployment Guide