The MPLS WG Archive

[Tricci So <tso@caspiannetworks.com>]

As far as I know, the only way to encapsulate Ethernet over MPLS is to refer to the
Martini draft (see draft-martini-l2circuit-encap-mpls-xx.txt).  There is no such
thing as  protocol type in MPLS to identify the encapsulated packet is Ethernet.
You need to configure or to signal the info for the associated MPLS i/f.

Tricci

mvsjetti@hss.hns.com wrote:

> hi,
>  i am working on MPLS over ethernet .
> i had gone through the draft    "draft-jagd-mpls-mcast-eth-00.txt"  .
>
> i was able to get the information on how ethernet identifies mpls packet  when
> it
> receives a packet form layers below it .(physical layer)
> (i.e from the standard ethernet type values for MPLS mulicast and
> unicast values 0x8847 & ox8848 in ethernet header)
>
> But when ethernet receives a packet from upper layer(i.e MPLS layer) how can
> it know that it had received from MPLS layer? is there any standard method?
> For example in BSD when ethernet receives a packet form IP it compares the
> address family of destination with AF_INET and determines whether it received
> packet from
> IP or not ?  Similarly is there any address family  AF_MPLS defined for MPLS? if
> not defined
> then how can ethernet identify that it had recived packet from MPLS?
>
> can anyone  help me out in this issue?
>
> thanks in advance
>
> mahesh
>
> Hughes Software Systems