Future Deployment of Video Endpoints
Cisco Prime Collaboration allows you to proactively measure network performance and health. Using this feature you can:
•Deploy new applications and services with complete confidence.
•Verify and monitor QoS and differentiated services.
•Increase end-user confidence and satisfaction.
•Implement IP SLA measurement metrics.
•Notify users proactively about network issues.
•Measure network performance continuously, reliably, and predictably.
Troubleshooting Using IP SLA
You can use this feature only if you have enabled the Cisco IOS IP SLAs on your network devices.
To start a proactive troubleshooting workflow:
Step 1 Choose Operate > Diagnose > IP-SLA Diagnostics.
Step 2 Perform the following:
a. Select the IP SLA source device from where you want to start the IP SLA testing.
b. Select the IP SLA responder IP device, which is the IP SLA destination.
c. Select the specific IP address of the responder IP device (applicable if your IP SLA destination device is configured with more than one IP address).
d. Select the application for which you want to test the network performance.
voice-service dsp-reservation <percentage> command must be configured on the router that acts as IP SLA initiator, to collect IP SLA statistics from the router.
e. Enter the IP SLA test life (in minutes).
Step 3 Click Start.
Based on the IP SLA Test Life (Minutes) value that you enter, the IP SLA tool will generate the traffic for that duration.
Figure 13-1 IPSLA Test Result
IP SLA Video Operations Diagnostics
If the troubleshooting IP SLA statistics is not available, Prime Collaboration supports application diagnostics to diagnose the issues and understand the root cause and recommendation.
Figure 13-2 IPSLA Test Result Failure
You must click Run Diagnostics. A message pops up stating the root cause and recommendation. After you run diagnostics, Prime Collaboration can diagnose if:
•The device supports IP SLA video operations.
•Prime Collaboration has CLI access to the device.
•IP SLA configuration is provisioned for the session running.
•"To" device has IP SLA responder role configured.
•NTP clock is synchronized.
•"To" device is reachable via the "From" device.
•voice-service dsp-reservation command is configured on the "From" device, if it is a router.
Figure 13-3 IPSLA Diagnostics Root Cause and Recommendation
Analyzing Media Paths
You can download and install the VSA Agent software to assess media path (see Media Path Analysis).
Before You Begin
Verify that the VSA Agent is up and running at the two endpoints, and synchronized to the NTP server.
To perform media path analysis:
Step 1 Choose Operate > Diagnose > Media Path Analysis.
Step 2 Enter the required assessment details.
Step 3 Enter the profile details (see Table 13-1).
Step 4 Click Start.
Table 13-1 Profile Details
Displays the profile settings you want to assess. RTP packets sent will be of based on the device type.
Number of devices or streams you want to add to the network. You can add upto five devices.
DSCP value indicates priority to traffic quality. The highest quality DSCP value is selected to ensure good quality video streaming.
You must use CTS1000 profile to deploy CTS 500 and 1000 and CTS3000 profile to deploy CTS 3000. You can create, edit, and delete profiles.
VSA Agent Assessment Results
For the individual streams, you can view the topology (layer 2 and layer 3) for the selected direction between endpoints in the Troubleshooting tab.
You can view the detailed troubleshooting workflow status for the top level and the individual streams using the Log tab. The Medianet Path View contains output from each mediatrace enabled device.
The Test Result tab displays the following charts:
For these charts, only the results of last twenty tests are displayed.
The Test Summary table provides summary of the test result in a tabular format for video and audio separately.
Figure 13-4 Test Summary
Figure 13-5 displays the peak-to-peak jitter for video and audio streams, in milliseconds.
Figure 13-5 Peak-to-Peak Jitter Graph
Figure 13-6 displays the packets lost for the video and audio streams in percentage.
Figure 13-6 Packets Lost Graph
Figure 13-7 displays the latency for video and audio streams, in milliseconds.
Figure 13-7 Latency Graph