Cisco Cisco Expressway
Appendix 1: Troubleshooting
Checklist
If you are experiencing a problem with the Lync integration, we recommend that you go through the following list
when performing the initial faultfinding. It will help to uncover any potential problems with the base configuration and
status of the deployment:
when performing the initial faultfinding. It will help to uncover any potential problems with the base configuration and
status of the deployment:
■
Check the Event Log (Status > Logs > Event Log) on Expressway
■
Enable logging on Lync Server
■
Enable debug on Lync Client
■
Ensure that video endpoints and infrastructure devices are running up-to-date software. Doing so lowers the
chances for interoperability issues between the video environment and Lync.
chances for interoperability issues between the video environment and Lync.
■
Ensure that all Gateway Expressways can successfully look up all Lync Server A-record FQDNs in DNS (this
includes both Director and FE Servers). You can use Maintenance > Tools > Network utilities > DNS lookup
on the Expressway.
includes both Director and FE Servers). You can use Maintenance > Tools > Network utilities > DNS lookup
on the Expressway.
■
Ensure that all Lync servers can successfully look up all Gateway Expressway peer A-record FQDNs and
cluster FQDN in DNS. You can use the nslookup command-line utility locally on each Lync Server.
cluster FQDN in DNS. You can use the nslookup command-line utility locally on each Lync Server.
■
Verify that the B2BUA has connectivity both with the Lync environment and the Expressway (on the Status >
Applications > Lync B2BUA page, Status = Alive is the desired state for both).
Applications > Lync B2BUA page, Status = Alive is the desired state for both).
Tracing Calls
Tracing calls at SIP / H.323 level
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.
—
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.
This helps to subsequently identify the relevant sections in the downloaded diagnostic log file.
—
You can add as many markers as required, at any time while the diagnostic logging is in progress.
—
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).
archive (the exact wording depends on your browser).
Lync Problems
Run the Lync Server ‘Best Practices Analyzer’ to help identify configurations that may be incorrect on Lync Server.
.
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Cisco Expressway with Microsoft Lync Deployment Guide
Appendix 1: Troubleshooting