Re: [mpls-tp] PSC MEP action on Non TTL 1 value- Receive

Dear Saravanan,
VCCV Control Channels 2 and 3 cannot be used to carry PSC OAM as
it uses ACh/G-ACh. (I think that only BFD, LSP and ICMP ping might use CC 2
and 3). As I understand the draft-ietf-mpls-tp-linear-protection-04.txt, the
PW must use PW CW in order to properly process PSC signalling. Of course,
that is the case for MPLS-TP PW and based on current wording of RFC 5586. If
GAL is used in PWs, in non-TP and/or MPLS TP PSN, use of PW CW might not be
required.

Regards,
Greg

On Tue, Mar 15, 2011 at 3:05 AM, Saravanan P <PSaravanan@ixiacom.com> wrote:

> Hi,
>
> In spec  Linear Protection draft-ietf-mpls-tp-linear-protection-04.txt,
> what will be the default behavior if designated MEP receives the PSC OAM
> packet with  Pseudowire lable has non TTL 1 value ?
>
> How does MEP in PE knows that should pass the packet to control plane or
> forward the packet since PW label is non TTL 1 value.
>
> PE should take decision by seeing Tunnel and PW  label or TTL also need to
> be looked ?
> Regards,
> Saravanan.
> _______________________________________________
> mpls-tp mailing list
> mpls-tp@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls-tp
>