Cisco Bug: CSCvj10951 - RF management traffic overutilization
Aug 10, 2018
- Cisco cBR Series Converged Broadband Routers
Known Affected Releases
Symptom: Current management traffic rate can be found out by subtracting User traffic rate (Mbps) from total MPEG traffic rate (Mbps) from 'show controller integrated-Cable < > counter rf-channel' . It appears CBR8 is sending 4 to 10Mbps more management traffic than it requires. For instance, from following example, only four upstream channels are configured for 6/0/0 and management traffic rates for RF channel 1 and 15 are 14.47 Mbps (32.21 - 17.74==14.47) and 14.13Mbps (37.91 - 23.78 == 14.13) respectively. In compared with other interfaces that are having four upstream channels and showing around 4 to 5 Mbps of normal management traffic rate, around 10Mbps of more management traffic is being sent on 6/0/0. CBR8#show controllers integrated-Cable 6/0/0 counter rf-channel Controller RF MPEG MPEG MPEG Sync MAP/UCD User Chan Packets bps Mbps Packets Packets Mbps Tx Tx Tx 6/0/0 1 336355185113 32218817 32.21 2609065148 78001856960 17.74 6/0/0 15 220927364727 37917945 37.91 1296173526 51843147291 23.78 Conditions: Many UGS-AD service flows. And the upstream channel is busy. Swtich UGS-AD service between UGS-AD poll and UGS-AD grant frequently.
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