Cisco Bug: CSCup75992 - CRS-X MC, ingressq taildrops seen due imbalance in s2-s3 with 7 planes

Last Modified

Jan 09, 2017

Products (1)

Cisco Carrier Routing System

Known Affected Releases

5.1.3.BASE

Description (partial)

Symptom:
With CRS-X fabric on a multi-chassis system , UCH line rate traffic is getting tail dropped with 7 planes up.

Conditions:
In CRS-X multi-chassis system on LCCs having CRS-X fabric when we have more that 4 CRS-X MSCs with UCL line rate traffic and then have a CRS-X MSC with UCH line rate. UCH traffic will be tail dropped. This was observed with UCH packets being 9600Bytes. Seen only when 7 planes are available.

View Bug Details in Bug Search Tool Login Required

Why Is Login Required?

Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

Full Description (including symptoms, conditions and workarounds)
Status
Severity
Known Fixed Releases
Related Community Discussions
Number of Related Support Cases

Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.

Learn More About Cisco Service Contracts