Guest

Preview Tool

Cisco Bug: CSCus20310 - No support for ECMP in HW for IR BUM (same VNI, same peer, multi-path)

Last Modified

Dec 26, 2014

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

7.0(3)I1(0.192)

Description (partial)

Symptom:
With ingress-replication unicast core, for all BUM traffic in the same VNI and to the same 
remote peer cannot be load balanced among ECMP uplinks (if any) to reach to the  peer. Only
one of the uplinks will be selected.

This is due to hardware limitation, i.e., hardware multicast replication doesn't support hashing
to one of the port in an ECMP set.

Conditions:
Always
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.