Cisco Bug: CSCvs50966 - Source class is 0 for return traffic
Oct 29, 2020
- Cisco Nexus 9000 Series Switches
Known Affected Releases
Symptom: The sclass of an endpoint (MAC/IP address) is programmed with 0, thereby causing traffic to drop. Conditions: This is a timing scenario and user could run into this when an existing IP address is learned with a new MAC address on an another leaf node (L2R move). In this scenario, the existing IP address, which is a bounce on the original leaf node, can program the endpoint (MAC/IP address) with sclass 0. VPC node ======== VPC1: Local MAC1/IP1 VPC2: On-peer MAC1/IP1 Now, if IP1 is learned with MAC2 on a remote leaf node, MAC/IP1 can be programmed with sclass 0 on the VPC1/VPC2 nodes.
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)
- Known Fixed Releases
- Related Community Discussions
- Number of Related Support Cases