Native VLAN mismatch


I am getting this following syslog message on SW1

%CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/9 (0), with SW1 FastEthernet0/9 (1).

I don't unserstand this message. Isn't VLAN mismatch supposed to be between two switches? Please let me know how to read  the above message and how to fix it

Thanks a lot!
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some adapter cards can be configured for VLANs.

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Alexey KomarovChief Project EngineerCommented:
You have connected switch on port fa0/9 whis defferent Native Vlan.
Don JohnstonInstructorCommented:
> Isn't VLAN mismatch supposed to be between two  switches?

A "Native" VLAN mismatch can occur between devices that have an 802.1q trunk between them.

What is connected to interface fa0/9?
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Nayyar HH (CCIE RS)Network ArchitectCommented:
According to Cisco means ...
%NATIVE_VLAN_MISMATCH: native VLAN mismatch discovered on [local interface (local
interface VLAN ID),] with [neighbor name neighbor interface (neighbor VLAN ID)]

Please post ....
sh run int <inf>
sh int <inf> switch
sh int <inf>
sh cdp nei
Jan SpringerCommented:
Do a:

sh run int FastEthernet0/9

and tell us what is connected to this interface (switch, server, etc)
On your switch where you posted your question issue:

#interface fa0/9
#switch-port trunk native vlan 1

The natives vlans at the ends must match.
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