Re: RFC 4591 and RFC 4349: DLCI at egress LCCE

[due to an error on my part, this response didn't go to the list -
  please, accept my apologies if you get a duplicate]

Javi wrote:
> Carlos,
> 
> Thanks for your clarification.
>>
>> Think of the HDLCoPW as a cable, with "CEs" connected back-to-back on
>> that port. Any configuration would need to use the same DLCIs, and any
>> potential signaling would be CE to CE (needing to match DLCIs).
> What CE to CE signalling would you use to match DLCIs?, Q.933?
> 
> Thanks
> 
> Javi

Javi,
May be a diagram may help clarify the idea:

             C1                            C2
    [ FR A ]----[ LCCE 1 ]------[ LCCE 2 ]----[ FR B ]

                <------ L2TP HDLCoPW ---->

            <------------- FR traffic ------->


In other words, the above set of devices will behave exactly
the same (bit for bit on cables C1 and C2) as if C1 and C2
were the same physical cable, eg:

    [ FR A ]----..........................----[ FR B ]

            <------------- FR traffic ------->

where the series of dots above represents the transparent PW
between LCCE 1 and LCCE 2.

Hope this makes sense,
-Ignacio