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Vlan in Err-Disabled State

RJRodriguez
Level 1
Level 1

Hello Everyone, 

 

I ran into an issue recently. I am creating some new vlans on Nexus switches ( I have limited expeerinece with NXOs) and after I trunked all the vlans I noticed the new vlans I created were in an err-disabled on trunk ( See Attachemtn). I have applied these on Catalyst switches as well and do not have this issue, am I missing somewhere I could not have entered the Vlans appropriately?

 

Thank you in advance...

 

 

 

1 Accepted Solution

Accepted Solutions

interface port-channel100
switchport mode trunk
spanning-tree port type network
vpc peer-link

 

VPC peer- link the connection between the 2 switches.

So, it appears that the above Portchannel is your VPc peer-link. As long as you have "switchport mode trunk" on both switches, you should be good to go, and no need to add any individual vlans to VPC Peer-link. Make sure the same exact config exists on both switches.

If you are still having issues, post the output of "sh vpc" and "sh vpc details" from both switches.

 

HTH

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6 Replies 6

balaji.bandi
Hall of Fame
Hall of Fame

If this is vPC you need to allow those VLAN in vPC Link,  also check any spanning tree loops for that VLAN ?

 

check the logs on nexus switches

 

BB

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Ok, I went back in and checked VPC links and I saw that they are missing the new Vlans I created, so I see VPC links and then something called a VPC Peer-Link, what is the proper way and procedure for adding the new vlans? I have not added this before just want to be sure I dont bring anything down in production.

 

interface port-channel100
switchport mode trunk
spanning-tree port type network
vpc peer-link

 

interface port-channel10
description MasSo-Lvl2-IDM
switchport mode trunk
vpc 10

interface port-channel100
switchport mode trunk
spanning-tree port type network
vpc peer-link

 

VPC peer- link the connection between the 2 switches.

So, it appears that the above Portchannel is your VPc peer-link. As long as you have "switchport mode trunk" on both switches, you should be good to go, and no need to add any individual vlans to VPC Peer-link. Make sure the same exact config exists on both switches.

If you are still having issues, post the output of "sh vpc" and "sh vpc details" from both switches.

 

HTH

vpc peer link between nexus, that should work for all the VLAN allowed in the Trunk.

 

interface port-channel10
description MasSo-Lvl2-IDM
switchport mode trunk
vpc 10

is this connected to downlinks to other switches ?

Do you need all the VLAN to pass to downlink switches ?

have you created VLAN on the new switch ?

where is that output you took from ? from nexus? what is the output from downside switches ?

 

BB

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...

Hello

Can you post the output from:
sh vpc
sh vpc conisistancy-paremeters  global
sh spanning-tree tree vlan 871


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Paul
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