Re: Repost: RFC 3471: IF ID specification WRT component link.

[Yakov Rekhter <yakov@juniper.net>]

Anca,

> Yakov,
> What goes in the IF-ID RSVP_HOP TLVs if upstream and downstream directions 
> use different numbered component links?

draft-ietf-mpls-bundle-04.txt does *not* support this.

Yakov.

> Thanks,
> Anca
> 
> At 06:58 AM 3/10/2003 -0800, Yakov Rekhter wrote:
> >Sameer,
> >
> > >
> > > Reposting, as I did not get any response.  Could
> > > someone please answer the question.
> >
> >from  draft-ietf-mpls-bundle-04.txt:
> >
> >    If the component link is numbered, the IF_ID RSVP_HOP object, or
> >    IF_ID TLV carries either Type 1 (IPv4 address) or Type 2 (IPv6
> >    address) TLVs (see [GMPLS-SIG]). The address carried in the TLV
> >    identifies the link for which label allocation must be done.
> >
> >    If the component link is unnumbered, the IF_ID RSVP_HOP object, or
> >    IF_ID TLV carries Type 3 (IF_INDEX) TLV (see [GMPLS-SIG]). The
> >    value carried in Type 3 TLV contains the identifier of the selected
> >    component link assigned to the link by the sender of the Path/REQUEST
> >    message. Processing this object is the same as specified in Section
> >    "Processing the IF_ID RSVP_HOP object"/"Processing the IF_ID TLV"
> >    of [RSVP-UNNUM]/[CRLDP-UNNUM].
> >
> >Yakov.
> >
> > >
> > > Thanks
> > > - Sameer
> > >
> > > --- Sameer K <sameerdw@yahoo.com> wrote:
> > > > Hello All,
> > > >
> > > > From the RFC 3471 - GMPLS Signaling Functional
> > > > Description, Section 9.1.1, it appears that there is
> > > > no way for upstream node, to specify component links
> > > > that are numbered, in the IF-ID HOP object.
> > > >
> > > > The TLV format for IF-ID Types 4 and 5 assumes that
> > > > the component link is always un-numbered.
> > > >
> > > > Is this the way it was planned to be?.  If yes, then
> > > > what should IF-ID look like for numbered component
> > > > link (which is a valid scenario per the Link
> > > > Bundling
> > > > draft).
> > > >
> > > > Or did I get it all wrong?
> > > > TIA
> > > > - Sameer
> > > >
> > > >
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> 
> --------------------------------------------
> Anca Zamfir                                Public Carrier IP
> Cisco Systems, Inc.                    email: ancaz@cisco.com
> 2000 Innovation Dr., Kanata          tel#: (613) 254-3484
> Ontario, CANADA  K2K 3E8         fax:  (613) 254-3717
>    
> 
>