Cisco Cisco Expressway Maintenance Manual
Some examples of the media statistics are packets forwarded, packets lost, jitter, media type, codec, and actual
bitrate.
bitrate.
Note:
The message severity is Informational but media statistics messages are always published, irrespective of the
severity filters.
Call Detail Records (CDRs)
The system can capture CDRs if you enable the service (which is off by default), and can publish them as syslog
messages if you are using remote logging.
messages if you are using remote logging.
If you select Service only the system keeps the CDRs for 7 days, and these CDRs can only be read via the
Representational State Transfer (REST) API to the Expressway. If you select Service and logging, the local data is
exposed in the Event Log, and the CDRs are also sent as INFO messages to your syslog host.
Representational State Transfer (REST) API to the Expressway. If you select Service and logging, the local data is
exposed in the Event Log, and the CDRs are also sent as INFO messages to your syslog host.
How to Configure CDRs
To configure CDRs on Expressway:
1.
Go to Maintenance > Logging.
2.
In the Logging Options section, set the Call Detail Records field following the below guide.
CDR Mode
Description
Off
CDRs are not logged locally (default).
Service Only
CDRs are stored locally for 7 days and then deleted. The records are not
accessible via the web GUI.
accessible via the web GUI.
Services and Logging
CDRs are stored locally for 7 days and then deleted. The records are accessible
from the local event log and the external syslog server if external logging has
been enabled.
from the local event log and the external syslog server if external logging has
been enabled.
For more information:
Publishing Logs to Remote Syslog Servers
Syslog is a convenient way to aggregate log messages from multiple systems to a single location. This is particularly
recommended for peers in a cluster.
recommended for peers in a cluster.
■
You can configure the Expressway to publish log messages to up to 4 remote syslog servers.
■
The syslog servers must support one of the following standard protocols:
—
—
Configuring Remote Syslog Servers
1.
Go to Maintenance > Logging, and enter the IP addresses or Fully Qualified Domain Names (FQDNs) of the
Remote syslog servers to which this system will send log messages.
Remote syslog servers to which this system will send log messages.
2.
Click on the Options button for each server.
3.
Specify the Transport protocol and Port you wish to use. The default is UDP over port 514. If you choose to
use TLS, you will see the option to enable Certificate Revocation List (CRL) checking for the syslog server.
use TLS, you will see the option to enable Certificate Revocation List (CRL) checking for the syslog server.
4.
In the Message Format field, select the writing format for remote syslog messages. The default is Legacy
BSD.
BSD.
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Cisco Expressway Administrator Guide
Maintenance