[c-nsp] Label swapping on 7600 ethernet line cards

Jose lobo at allstream.net
Wed May 14 08:26:00 EDT 2008


Peter Rathlev wrote:
> Hi Jose,
>
> On Tue, 2008-05-13 at 12:16 -0400, Jose wrote:
>   
>> It was recently brought to my attention from a colleague that certain 
>> Ethernet line cards for the 7600 platform do not support label 
>> swapping.  We currently have WS-X6148-GE-TX line cards and we are 
>> planning on upgrading them due to their lack of jumbo frame support.  We 
>> were looking at the WS-X6148A-GE-TX since it has jumbo frame support but 
>> now the concern is whether this card will be able to swap labels.  Can't 
>> find any mention of this on CCO.
>>     
>
> It does MPLS fine, both imposition/deposition and swapping. When using
> PFC MPLS any LAN card can be used. Be aware though that PFC MPLS is
> limited in some (many?) ways, so you can't do anything REALLY fancy. :-)
>
> We had four WS-X6148A-GE-TX in production until recently. They may have
> jumbo frame support, but they are oversubscribed and not really useful
> for core links. (They're sold a "wiring closet" cards.)
>
> Regards,
> Peter
>
>
>
>
>
>
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>   
Thanks everyone for the information.

Jose


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