×

Warning message

  • Cisco Support Forums is in Read Only mode while the site is being migrated.
  • Cisco Support Forums is in Read Only mode while the site is being migrated.

4-NATIVE_VLAN_MISMATCH

Unanswered Question
Mar 27th, 2008
User Badges:

Hello,

My core switch (6506) is pegging me with warnings like this one:


Oct 27 23:51:29 sw2-int.XX.XX 5882: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN

mismatch discovered on FastEthernet0/1 (1), with SCAxxxxx(YYY-ZZ) 7/41 (81).


- which I am aware of, and it's perfectly fine that way - the switch

that is sending out all the complaints is an "edge switch", which has

no VLANs at all, all the ports in VLAN 1 (3550).


To get rid of the warnings, I see two possible approaches, that I both

do not like very much:

- switch off CDP, which I think is very useful

- move all ports plus management VLAN to vlan 81, which is a lot of effort, for minor gain.


What I'd really like to see is an option


"no cdp warnings vlan-mismatch "


but as far as I'm aware, it doesn't exist. Anything I'm overlooking here? Thanks in advance.



  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
padramas Thu, 03/27/2008 - 21:43
User Badges:
  • Cisco Employee,

Hello David,

You can change the native vlan to any dummy vlan on both port of the switches. Native vlan configuration is local to a link. Say if you dont have vlan 81 on 3550, under interface,


sw(config-if)#switchport trunk native vlan 81


HTH

Padmanabhan

Actions

This Discussion