Encapsulation failing for fast ethernet.

[aballant]

Hi,

I've got two ethernet interfaces configured between two routers, but when I ping them I get an encapsulation error?

01:13:03: IP: s=200.200.50.2 (local), d=200.200.50.1 (FastEthernet0), len 100, encapsulation failed.

Router 1....

interface FastEthernet0
ip address 200.200.50.1 255.255.255.0
speed auto

Router 2....
interface FastEthernet0
ip address 200.200.50.2 255.255.255.0
speed auto

What could cause this I? Or what is the next step in debugging. I did a 'debug ip packet'



cheers,
Andrew

 

[aballant]

Hi,

The ARP table was corrupted as I had previous assigned the same IP address to both interfaces

~(_8(|)



cheers,
Andrew