Re: IS-IS issue over ethernet subinterface

Could it be the NIC on your PC? You are binding the dynamips routers to the
real NICs, and then connecting them to real switches, right? IS-IS hellos
are padded to the MTU size, then add the dot1q header and maybe the NIC on
the PC is dropping it.

Or maybe try "no isis hello padding" under the interface.*

*Bryan Bartik
CCIE #23707, CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com

On Thu, Apr 9, 2009 at 4:07 PM, joshua atterbury
<joshuaatterbury_at_gmail.com>wrote:

> Hi,
>
> I recently had a similar issue and it was a result of mtu problems, Can you
> increase the switch mtu with the command "system mtu X" to something like
> 1520 or something and test again. I believe the switch may be dropping the
> already tagged traffic.
>
>
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