Re: [mpls-linux-general] LDP config... confused!

[James R. L. <jl...@mi...>]

Make sure you clean out all interface address and routes before starting
zebra/ospfd.  Zebra treats interface that it provisioned and interfaces
learned from the kernel differntly.  I do not understand all of
the ramification of this yet, but I work around it by configuring
everything via zebra.

On Tue, Oct 15, 2002 at 06:20:16PM +0100, Sameer Gharat wrote:
> Hi James,
> 
> nope... I have only ospfd running as the routing
> protocol. the funny thing is that mplsd does create
> the outlabels sometimes while sometimes it doesn't!
> ... I haven't been able to pin-point the conditions
> that exist when the out-labels are getting created.
> Maybe I'll go through the trace output and see if I
> can figure out something.
> But as far as existing route entry is concerned, I
> believe it would have been created by ospfd. Is that
> right? 
> 
> thanks and regards,
> Sameer
> 
>  --- "James R. Leu" <jl...@mi...> wrote: > Do
> you have some other routing protocol running? 
> > LDP out labels only get
> > installed for FECs that match an existing route
> > entry.
> > 
> > On Mon, Oct 14, 2002 at 04:01:00PM +0100, Sameer
> > Gharat wrote:
> > > Hello James and all,
> > > 
> > > I included a dummy interface with a /32 address
> > and
> > > tried the procedure over again. It worked!! ...
> > though
> > > only partially, as it created incoming labels on
> > both
> > > the hosts that I was working on. But it did not
> > create
> > > any outgoing labels.
> > > 
> > > Any reason, why this should happen?
> > > 
> > > thanks in advance!
> > > 
> > > cheers,
> > > Sameer
> > > 
> > >  --- "James R. Leu" <jl...@mi...> wrote: >
> > The
> > > default behavior for zebra-ldp is to only
> > > > distribute labels for
> > > > the LSR-ID (this can be changed, but only
> > > > programitically).  The LSR-ID
> > > > must be attached to a directly connected
> > interface
> > > > and must show up as
> > > > a /32 in the routing table (this is probably a
> > > > little too strict, I need to
> > > > tweak these rules).  So the easiest way is to
> > use a
> > > > 'dummy' interface.
> > > > Compile your kernel with support for it, then
> > assign
> > > > a /32 to it through zebra.
> > > > Configure OSPF to run passive on the dummy
> > > > interface.  You should then see
> > > > that LDP distruibutes labels for the /32s.
> > > > 
> > > > Jim
> > > 
> > > 
> > >
> >
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> > -- 
> > James R. Leu 
> 
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-- 
James R. Leu