The MPLS WG Archive

[David Charlap <David.Charlap@marconi.com>]

Hong Liao wrote:
> 
> Sorry I brought up the old topic, but I found something.
> 
> I found that draft rsvpte 09.txt, the section 3 LSP Tunnel related
> message formats,
> 
> Object name                       Applicable RSVP message
> 
> Label object        Resv
> 
> Does it mean that the Label object is only in the Resv msg? But
> if that is the case, the ResvTear msg still use the FF flow
> descriptor from Resv formate, I know ResvTear msg was not redefined.

It's only required in the Resv message.

It is still wrong, IMO, to reject a message simply because it contains
an object you don't require.  If you don't need it, ignore it,.

Note, however, that this is only if the unnecessary object is of a known
class.  If you get an unknown class object, you should still handle it
according to the unknown-object processing rules (reject the message,
ignore the object, or forward the object, depending on class number.)

> So my question is that if there Label msg should not be in the
> ResvTear msg at all or it is optional, just like you mentioned in
> you last email,

I don't think it should be there.  But I don't see a compelling reason
to reject the message if it is present.

-- David