Cisco Cisco Expressway 维护手册
The Expressway uses the configured Default CPL if it fails to contact the policy service via any of the configured
addresses.
addresses.
Note that this method provides resiliency but not load balancing i.e. all requests will be sent to Server 1 address,
providing that server address is functioning correctly.
providing that server address is functioning correctly.
Viewing Policy Server Status via the Expressway
A summarized view of the status of the connection to each policy service can be viewed by going to the Policy
service status page (Status > Policy services).
service status page (Status > Policy services).
The set of policy services includes all of the services defined on the Policy services page (Configuration > Dial plan
> Policy services), plus a Call Policy service if appropriate.
> Policy services), plus a Call Policy service if appropriate.
The following information is displayed:
Field
Description
Name
The name of the policy service.
Clicking on a Name takes you to the configuration page for that service where you can change any of the
settings or see the details of any connection problems.
settings or see the details of any connection problems.
URL
The address of the service. Note that each service can be configured with multiple server addresses for
resiliency. This field displays the server address currently selected for use by the Expressway.
resiliency. This field displays the server address currently selected for use by the Expressway.
Status
The current status of the service based on the last attempt to poll that server.
Last
used
used
Indicates when the service was last requested by the Expressway.
TURN Relay Usage
The TURN relay usage page (Status > TURN relay usage) provides a summary list of all the clients that are
connected to the TURN server.
connected to the TURN server.
Note that TURN services are available on Expressway-E systems only; they are configured via Configuration >
Traversal > TURN.
Traversal > TURN.
The following information is displayed:
Field
Description
Client
The IP address of the client that requested the relay.
Media destinations
The address of destination system the media is being relayed to.
Connection protocol
Indicates if the client is connected over TCP or UDP.
Relays
Number of current relays being used by the client.
Viewing TURN relay details for a client connection
You can click on a specific client to see all of the relays and ports that it is using.
For each relay, its associated relay peer address/port is displayed. It also displays each relay's associated peer
address/port (the TURN server relay port from which the media is being sent to the destination system). To see
specific statistics about a relay, click View to go to the
address/port (the TURN server relay port from which the media is being sent to the destination system). To see
specific statistics about a relay, click View to go to the
TURN Relay Summary
The TURN relay summary page provides overview information about a particular relay, including a summary count of
the permissions, channels and requests associated with that relay.
the permissions, channels and requests associated with that relay.
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Cisco Expressway Administrator Guide