Preview Tool

Cisco Bug: CSCvv36477 - MAC flapping between physical interface and nve1(

Last Modified

Sep 30, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

7.0(3)I7(7) 9.3(4)

Description (partial)

Constant MAC flapping between physical interface and nve1( that causes packet loss. also NVE peer is seen in nve peer table:
# sh nve peers 
Interface Peer-IP                                 State LearnType Uptime   Router-Mac       
--------- --------------------------------------  ----- --------- -------- -----------------
nve1                               Up    DP        00:01:40 n/a

Issue happen only in Flood and LEarn in VXLAN environment  where ISIS packet re received from downstream switches
Bug details contain sensitive information and therefore require a 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.