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Cisco Bug: CSCum75647 - Mcast traffic/ system stability issues in quad-sup w/ 6800IA scale setup

Last Modified

Jan 28, 2017

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases

15.1(1)IB273.261

Description (partial)

Symptom:
1. Multicast traffic blackhole observed after SSO on scaled ( 1000 ports of 6800IA clients) setup with large multicast usage.
2. When IGMP Join / Leave is done for all the groups over all 1000 ports, system can experience reload of standby ICS supervisor

Conditions:
1. Issue seen only with scaled configuration where all 1000 ports of 6800IA clients are receiving multiple multicast streams.
When each port is receiving at most one group, traffic is recovered after SSO.

2. Issue seen only with scaled configuration where all 1000 ports of 6800IA clients are receiving multiple multicast streams.
When each port is receiving at most one group, traffic is recovered after SSO.

If the system receives JOIN / LEAVE for a group or few groups,
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Bug Details Include

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