[c-nsp] ASR920 port based xconnect equivalent

[Jason Lixfeld]

> On Jun 7, 2016, at 4:00 PM, Mark Tinka <mark.tinka at seacom.mu> wrote:
> 
> 
> 
> On 7/Jun/16 21:54, Adam Vitkovsky wrote:
> 
>> 
>> 
>> My understanding is that in MPLS it really depends on the default
>> behaviour of the edge device, that is whether it tries to interpret
>> incoming PDUs or it doesn't care and forwards or drops them.
>> James mentioned that ASR9xx family does try to make sense of incoming
>> PDUs by default (or possibly dropping).
>> ASR9K family on the other hand forwards by default.
> 
> Since the ASR920 requires EFP's for even port-mode EoMPLS, I have not
> really tested whether Layer 2 PDU's are automatically passed with
> "encapsulation default". My initial guess would be no, because the pw is
> on an EFP, but I'd need to check to be sure.
> 
> On an ME3600X/3800X, all Layer 2 PDU's are passed without question in
> classic port-mode EoMPLS, i.e., "xconnect" command on the physical
> interface.
> 
> L2PT has typically between required for VLAN-mode EoMPLS.

Yeah. What he said seconds before I said it :p