05-09-2022 06:53 AM
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...
Solved! Go to Solution.
05-09-2022 07:41 AM
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
05-09-2022 07:01 AM
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
05-09-2022 07:20 AM
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
05-09-2022 07:41 AM
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
05-09-2022 07:42 AM
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 ?
05-09-2022 07:18 AM - edited 05-09-2022 08:42 AM
...
05-09-2022 08:01 AM
Hello
Can you post the output from:
sh vpc
sh vpc conisistancy-paremeters global
sh spanning-tree tree vlan 871
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide