Symptom
Enhancement defect to add mac address static auto-learn feature on Nexus 9000.
Example: mac address-table static XXXX ethernet1/1 auto-learn:
1. Ethernet1/1 is UP - mac is static and always point to E1/1 (mean dynamic learn ignored)
2. Ethernet1/1 is DOWN - static mac removed - dynamic learn honored.
Without auto-learn feature, and `clear` know enabled (introduced with CSCvr27803)
mac address-table static clear
mac address-table static 0000.0000.000a vlan 10 interface port-channel10
, when the port-channel interface with the static mac is shutdown:
- MAC is not learned as dynamic
- Traffic with destination MAC is getting flooded
Conditions
Nexus 9000 with static mac address configured
Further Problem Description
On Nexus 9000, with static mac address configured, when the port is down, the mac address is not removed from l2fm causing traffic to be flooded.
