Hi,
Our topology is N7Ks to N5Ks on back to back vpc, we are applying vpc best practices starting at the N5Ks.
I have a strange issue that appears after enabling vpc peer-switch on nexus 5596UP peer switches. After applying the same spanning-tree priorities on the N5Ks (32xxx) and then applying the peer-switch command we noticed that on the N5K peer-link and the vpc uplink to the N7K, and on the N7K vpc downlink to the N5Ks, the allowed vlan list on these port-channels were removed and instead all vlans are allowed (ie. no allowed vlan list applied).
Even after removing the spanning tree priorities and peer-switch commands we are unable to apply the allowed vlan list on these port-channels, the command is accepted by does not apply. This is the same for the N7K's.
Im wondering if this is an order of operations issue, ie. applying SPT priorities before peer-switch , and where we have a back to back vpc shere N7ks are the root, should we even bother applying peer-switch to the N5K's ?
The N5Ks are running latest safe harbor code 7.08.
Thanks in advance.
dave.
