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Cisco nexus switch vlans are not shown on spanning-tree and vlan l2 is down

Saed Eldin
Level 1
Level 1

Dear

I have two disco switches  N5K which run VPC and connected together to non-vss Cisco switches 6500. The Port channels between 6k and N5k are up , but i cannot see any vlans under spanning-tree also if i did show interface  trunk we got all vlans under err-disable. We have enable only

Please check attached.

2 Replies 2

Mark Malone
VIP Alumni
VIP Alumni

Hi , why are there no vlans allowed/configured on the vpc peer-link between the 5ks ?

vlans are usually allowed on this trunk as example below from one of my dcs , can you post the show vlan from each switch and show vpc brief as well please

interface port-channel11
  description VPC Peer link to xxxxxxxxxxxx
  switchport
  switchport mode trunk
  switchport trunk allowed vlan 2,10-11,17-18,20,28,31,33-34,36-39
  switchport trunk allowed vlan add 48,50,64-67,70,72,74,76,78,80,90-108
  switchport trunk allowed vlan add 112,226,400,431,490,1226,2224
  spanning-tree port type network
  logging event port link-status
  logging event port trunk-status
  vpc peer-link

Mark

Thanks so much for your help.

I will test your recommendation above and i will let you know today.

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