The MPLS WG Archive

["Adrian Farrel" <afarrel@movaz.com>]

Dipak, you're quite right.
There is no scalar in the TE-MIB to state whether the LSR (LER :-) supports
RSVP-TE, CR-LDP or both.
Notwithstanding this, of course, an LER might support your chosen signaling
protocol but fail to connect with any other LSR that supports it.
You are probably best off trying to instantiate a tunnel setting
mplsTunnelSignallingProto to rsvp(2) or crldp(3).  As you set this field you
would expect to see an error from an LER that doesn't support the signaling
protocol.

NB: If we were to introduce such a scalar, it might be better placed in the LSR
MIB.

Adrian
--
Adrian Farrel
Movaz Networks Inc.
afarrel@movaz.com
----- Original Message -----
From: "Dipak" <dipak@monmouth.com>
To: "Thomas D. Nadeau" <tnadeau@cisco.com>
Cc: <mpls@UU.NET>
Sent: Tuesday, July 17, 2001 3:56 PM
Subject: Re: One simple question


>     How can you be sure that if MPLS-TE-MIB is existing then RSVP-TE is
> supported? It can only be CR-LDP to signal the LSP tunnel establishment.
> Isn't it?
>
> Dipak
>
> "Thomas D. Nadeau" wrote:
>
> >          Assuming that the MPLS-TE-MIB
> > has been implemented by the vendor in question,
> > you can query for any of the scalars in the
> > MIB. If they are returned, you know that the
> > MIB and thus RSVP-TE is supported. The MIB
> > can be found here:
> >
> > http://www.ietf.org/internet-drafts/draft-ietf-mpls-te-mib-06.txt
> >
> >          Another means of telling this without doing
> > the query, is to look at the vendor's
> > agent capabilities statement for the MPLS-TE-MIB.
> > It will tell you if the MIB has been implemented.
> >
> >          --Tom
> >
> > >     Can anybody suggest someway that a network manager (say, SNMP
> > >manager) can discover that any MPLS enabled router in its network has
> > >RSVP-TE implemented for establishing LSP tunnel?
> > >
> > >Thanks,
> > >dipak
>