[c-nsp] Problems with dot1q trunk over EoMPLS with WS-X6148-GE-TX

[Dan Voyer]

Yo, the WS-6148-GE-TX does not support "large frame". You need the WS-6748
for large frame !

And i believe you have a sup32, well that doesnt support large frame either,
unless it's a sup32-10GE.

Maybe you could use 1 port for each VLAN, that way you don't need the 4
bytes header from 802.1Q


- Sometimes I wish when people buy that WS-6148 line card Cisco make
them sign "yes I agree to buy this line card that doesnt support large
frame".

dan
On Sun, Aug 8, 2010 at 8:05 AM, Fabien Dedenon <daf-list at internet-fr.net>wrote:

>
>  Hi,
>
> Le 08/08/2010 13:33, Gert Doering a écrit :
>
> Hi,
>>
>> in addition to what Arie said:
>>
>> On Sun, Aug 08, 2010 at 01:02:46PM +0200, Marco Matarazzo wrote:
>>
>>> Router1#sh run int fa 2/32
>>> Building configuration...
>>>
>>> Current configuration : 245 bytes
>>> !
>>> interface FastEthernet2/32
>>>  description -VC-71172104--
>>>  no ip address
>>>  ip verify unicast source reachable-via any allow-default
>>>  no ip redirects
>>>  no ip proxy-arp
>>>  xconnect x.y.z.56 71172104 encapsulation mpls
>>>
>> ... just put "mtu 1504" here, to take into account that a full-sized
>> ethernet frame *plus* dot1q header is just bigger than without... :-)
>>
>> (Been there, cursed, found the answer)
>>
> Sorry Gert but WS-X6148-GE-TX by specification just won't permit this. mtu
> config is event not permitted (SXIx).
>    (config)#interface gigabitEthernet 4/46
>    (config-if)#mtu 1504
>    % Invalid input detected at '^' marker.
>
>> gert
>>
> Cheers,
>
> Fabien
>
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