The MPLS WG Archive

[Kireeti Kompella <kireeti@juniper.net>]

Hi Tom,

On Mon, 1 Mar 2004, Thomas D. Nadeau wrote:

> > I just posted a new version of the LSP ping doc.  One major change:
> > the L2 circuit ID FEC has been changed: a new field, the sender's PE
> > address, has been added.  It was pointed out to me that the VC ID
> > and the remote PE address do not uniquely identify a VC (duh!  I
> > should have known that).
> >
> > If anyone implemented this in the old format, please let me know.
> > I kept the same FEC type, but if necessary (to avoid interop
> > problems),the old type can be deprecated and a new one allocated.
>
> 	Yes, as a matter of fact, we implemented the old FEC
> type. Also, since VCCV used the old FEC type this is an
> issue for existing implementations of VCCV.

...

> 	What I suggest we do is a) change the FEC type for the L2 FEC back
> to what it was (and restore the format), or b) keep both the new
> and old one, and require that the new type use a different
> LSP ping version # if the new one is used.

That's what I did, except that I didn't bump the version number,
as no existing TLV is affected -- the new L2 FEC has a previously
unused TLV number.

Kireeti.
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