Having issues with VLAN on 3548 switch. Please help

[j.zortman]

Hello,

I am running a VLAN on a switch it runs fine until I plug a certain machine into it I get the following erorr:

2y43w: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/42 (10), with sw-2 FastEthernet0/45 (1).

Interface 45 is the one causing the issue. When I put interface 45 on the VLAN it is supposed to be which is VLAN10 it freezes up our network and starts relearning addresses

2y43w: %RTD-1-ADDR_FLAP: FastEthernet0/45 relearning 6 addrs per min

Any ideas?

Let me know if you need more info.

Thanks!

[j.zortman]

OK here is another weird part about it. Both servers have to NIC cards. On both NIC card 1 is plugged into a 207 network on a dell switch and it works fine with no messages. NIC card 2 on both is plugged into a 172 network cisco 3548 and thats where I am getting the errors.

Just seems strange that it is happening on 1 switch but not the other.

Any thoughts on that?

Thanks!