Re: IS-IS issue over ethernet subinterface

Hi Guys,

thanks for all your assistance...The problem was the MTU size on the NIC.
problem solved

Regards
D

On Fri, Apr 10, 2009 at 12:24 AM, Bryan Bartik <bbartik_at_ipexpert.com> wrote:

> 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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