Cisco Bug: CSCut42562 - Unicast Traffic dropped as discard drops in ingressq on Standby RP OIR
Jun 08, 2017
- Cisco Carrier Routing System
Known Affected Releases
Symptom: In a 8+2 multichassis setup used for system testing with fabqos configured, there is a 10G snake setup spanning 5 MSC-X line cards. When the standby RP of rack 7 is reloaded(where there are MSC-X cards in rack 7 that has participated in the snake traffic), few discard drops are seen in ingressq of some MSC-X cards. Conditions: This issue would be seen with multichassis and single chassis setups which have high volume of traffic, when the standby RP is reloaded or in case of RP failover. It may be that only some RPs in the multichassis may cause this. We have seen the issue with mixed streams of IPv4, IPv6 and MPLS traffic. Also this issue would typically be seen when lot of protocols are enabled in the router.
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Bug Details Include
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