Cisco Cisco Expressway
Appendix 3: Message logging
You can monitor the policy request messages and responses that are exchanged between the Expressway
and the policy service.
and the policy service.
The best way to do this is to use the diagnostic logging tool to capture these messages:
1. Go to
Maintenance > Diagnostics > Diagnostic logging
.
2. Optionally, select Take tcpdump while logging.
3. Click Start new log.
4. (Optional) Enter some Marker text and click Add marker.
l
The marker facility can be used to add comment text to the log file before certain activities are
performed. This helps to subsequently identify the relevant sections in the downloaded diagnostic log
file.
performed. This helps to subsequently identify the relevant sections in the downloaded diagnostic log
file.
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You can add as many markers as required, at any time while the diagnostic logging is in progress.
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Marker text is added to the log with a "DEBUG_MARKER" tag.
5. Reproduce the system issue you want to trace in the diagnostic log.
6. Click Stop logging.
7. Click Download log to save the diagnostic log archive to your local file system. You are prompted to save
the archive (the exact wording depends on your browser).
Trace example: Call Policy request and response
Example Call Policy request:
Jul 19 15:30:30 vcs tvcs: UTCTime="2011-07-19 15:30:30,616" Module="network.http"
Level="DEBUG": Message="Request" Method="POST" URL=" https://192.0.2.3/api/call_policy"
Ref="0x4945360"
Data="ALLOW_INTERWORKING=TRUE&AUTHENTICATED=FALSE&AUTHENTICATION_USER_NAME=&CLUSTER_
NAME=exp_cluster&DESTINATION_ALIAS=alice%40example.com&GLOBAL_CALL_SERIAL_NUMBER=094f761
c-b21c-11e0-91a2-000c29e127de&LOCAL_CALL_SERIAL_NUMBER=094f754a-b21c-11e0-a091-000c29e127
de&METHOD=INVITE&NETWORK_TYPE=IPV4&POLICY_TYPE=ADMIN&PROTOCOL=SIP&SOURCE_ADDRESS=192.0.2.
100%3A5061&SOURCE_IP=192.0.2.100&SOURCE_PORT=5061&TRAVERSAL_TYPE=TYPE_UNDEF&UNAUTHENTICAT
ED_SOURCE_ALIAS=bob%40example.com&UTCTIME=2011-07-19%2015%3A30%3A30&ZONE_NAME=DefaultSubZ
one"
Example response:
Jul 19 15:30:30 vcs tvcs: UTCTime="2011-07-19 15:30:30,625" Module="network.http"
Level="DEBUG": Message="Response" Src-ip="192.0.2.3" Src-port="5000" Dst-ip="192.0.2.20
0" Dst-port="40010" Response="200 OK" ResponseTime="0.003416"
Body="<!-- policy server -->
<cpl xmlns="urn:ietf:params:xml:ns:cpl"
xmlns:taa="http://www.tandberg.net/cpl-extensions"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:ietf:params:xml:ns:cpl cpl.xsd">
<taa:routed> <proxy/> </taa:routed> </cpl> " Ref="0x4945360"
External Policy on Cisco Expressway Deployment Guide (X8.2)
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Appendix 3: Message logging