On Wednesday 12 April 2006 15:38, Jason Ackley wrote:
> Tim Donahue wrote:
> > recv_dd_description: invalid MTU 1500 sent by neighbor ID 10.4.64.3,
> > expected 1496
>
>   This is your problem. Your physical interface driver
>   doesn't understand frames that are 'slightly' larger
>   than 1500 (baby giant).  Frames are increased by
>   4 bytes when they have 802.1q tags prepended to them.
>
[snip]
>   If you are unsure, you can grep around for
>   'IFCAP_VLAN_MTU' in the driver source code.
>
>   Most fxp/bge/nge/em/sk cards should be good. Some
>   vr/rl will work as well.
>
>   What is the other interface on the box?

Its an xl card so I'll need to see if we have any other cards around.

>   You could reduce the MTU on the other routers, but
>   that is a hack. Get a real card/driver and you will
>   be set.

This would just be a pain in the rear as time goes on....

Thanks for the pointer.  
Tim Donahue

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