[c-nsp] Re: 7600, DFC's and MPLS

[Chris Griffin]

I had seen some information that led me to believe that label imposition 
was still done on the PFC, and that label switching was done on the DFC, 
but I could never get a straight answer on that.  Anyone?

Chris

Kristofer Sigurdsson wrote:
> Never mind about the first question (the DFC one), found this:
> 
> "The Distributed Forwarding Card-3 replicates Layer 2 and 3 forwarding logic
> of the Supervisor 720's PFC-3 on each DFC-3 equipped linecard. This enables
> hardware acceleration of IPv6, MPLS, GRE, QoS, ACL policy enforcement and
> more."
> 
> Thanks,
> Kristofer
> 
> 2006/1/4, Kristofer Sigurdsson <kristosig at gmail.com>:
> 
>>Hi,
>>
>>Now, I'm not very experienced with the 7600 platform, so bear with me. :)
>>
>>I have two questions regarding the use of MPLS on the Sup720-3BXL.  From
>>what I can
>>gather, I can use MPLS on LAN ports using this supervisor.  However, if I
>>use DFC3 cards
>>on 67xx modules, bringing the forwarding decision to the line card, can I
>>still use MPLS?  Can the
>>line card, equipped with a DFC3, make forwarding decisions based on MPLS?
>>
>>Also, SIP modules.  Any points on using those as opposed to OSMs for
>>non-ethernet WAN interfaces?  Better, worse?
>>
>>Thanks,
>>Kristofer
>>
> 
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-- 
Chris Griffin                                cgriffin at ufl.edu
Sr. Network Engineer - CCNP                  Phone: (352) 392-2061
Network Services / Florida LambdaRail        Fax:   (352) 392-9440
University of Florida                        Gainesville, FL 32611