Cisco Cisco Expressway Maintenance Manual
Notes:
■
The UDP protocol is stateless. If reliability of syslog messages is very important in your environment, you
should use a different transport protocol.
should use a different transport protocol.
■
If there is a firewall between the Expressway and the syslog server, you must open the appropriate port to
allow the messages through.
allow the messages through.
■
If you select TLS transport, the Expressway must trust the syslog server's certificate. Upload the syslog
server's CA certificate to the local trust store if necessary.
server's CA certificate to the local trust store if necessary.
■
CRL checking is disabled by default; to enable CRL checking you must use Custom mode, set CRL check to
On , and ensure that relevant certificate revocation lists (CRLs) are loaded.
On , and ensure that relevant certificate revocation lists (CRLs) are loaded.
for more information.
■
The remote server cannot be another Expressway.
■
An Expressway cannot act as a remote log server for other systems.
■
The Expressway uses the following facilities for remote logging. The software components / logs that map to
the (local) facilities are emphasised:
the (local) facilities are emphasised:
—
0 (kern)
—
3 (daemon)
—
16 (local0) Administrator
—
17 (local1) Config
—
18 (local2) Mediastats
—
19 (local3) Apache error
—
20 (local4) etc/opt/apache2
—
21 (local5) Developer
—
22 (local6) Network
Configure System Metrics Collection on Expressway
In the following procedure you'll use the web interface to configure the Expressway to collect statistics and publish
them to a specified server.
them to a specified server.
1.
Log on to the Expressway and go to Maintenance > Logging
2.
Toggle System Metrics Collection to On
3.
Enter the Collection server address
You can use IP address, hostname or FQDN to identify the remote server
4.
Change the Collection Interval and Collection server port if necessary
You may need to change the port if the collection server is listening on a different port to the default (25826).
You may need to change the collection interval if your policy requires finer metrics than the default interval
(60s)
You may need to change the collection interval if your policy requires finer metrics than the default interval
(60s)
5.
Click Save
Managing Option Keys
Options are used to add additional features to the Expressway. Option keys can either be valid for a fixed time period
or have an unlimited duration. Your Expressway may have been shipped with one or more optional features pre-
installed. To purchase further options, contact your Cisco representative.
or have an unlimited duration. Your Expressway may have been shipped with one or more optional features pre-
installed. To purchase further options, contact your Cisco representative.
The Option keys page (Maintenance > Option keys) lists all the existing options currently installed on the
Expressway, and allows you to add new options.
Expressway, and allows you to add new options.
191
Cisco Expressway Administrator Guide