on a trunk you have a native VLAN which is 1 by default.  Evidently
your native VLANs don't match.

C6509> (enable) sh trunk
* - indicates vtp domain mismatch
Port      Mode         Encapsulation  Status        Native vlan
--------  -----------  -------------  ------------  -----------
 1/2      desirable    dot1q          trunking      1
 3/5      desirable    dot1q          trunking      1
 3/6      auto         n-dot1q        trunking      1
 3/7      on           dot1q          trunking      1
 5/35     auto         n-isl          trunking      64
 5/38     auto         n-isl          trunking      64
15/1      nonegotiate  isl            trunking      1
16/1      nonegotiate  isl            trunking      1

 Dave

James wrote:
> 
> Can any on tell me what a "Native VLan Mismatch" is
-- 
David Madland
Sr. Network Engineer
CCIE# 2016
Qwest Communications Int. Inc.
[EMAIL PROTECTED]
612-664-3367

"Emotion should reflect reason not guide it"




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