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New Member

problem on catalyst 2924XL

HI,

I have a catalyst 2924 XL connected to two federator ( catalyst 4506 ) with fast Ethernet ports.

One port is bloked bye STP.

I have this message on catalyst 2924 :

%CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/24

(0), with c4506-1 FastEthernet4/2 (8).

%CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/23

(0), with c4506-2 FastEthernet4/2 (8).

What can be the problem and if there is any solution?

Thanks.

3 REPLIES
New Member

Re: problem on catalyst 2924XL

Have you set the ports up as trunks on the 2924 and both 4506's? Is the network flat or does it have VLANs?

i.e.

2924XL - switchport mode trunk

switch trunk encapsulation dot1q

4506 - set trunk 4/2 on dot1q (VLAN numbers, if using VLANs)

Hope this helps,

Regards,

Wayne

New Member

Re: problem on catalyst 2924XL

Hi,

the problem is that the catalyst 2924 doesn't support trunk mode. the port in the federator who is connected to the catalyst is in VLAN 2 and all ports in catalyst are in nativa VLAN 1.

New Member

Re: problem on catalyst 2924XL

I have a question....

What is a FEDERATOR??

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