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

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

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

On Mon, Oct 07, 2002 at 01:50:15PM +0100, Sameer Gharat wrote:
> Hello James and everybody,
> 
> I've managed to set up static LSPs successfully and
> have now moved over to setting up of dynamic LSPs
> using ldp-portable-0.2.
> 
> For this, I'm working with a simple setup of two
> hosts. Host A ==> 10.3.9.87 and Host B ==> 10.3.9.92.
> I have setup and configured zebra, ospfd and mplsd on
> both these machines. My config files are:
> --------------zebra.conf--------------------
> !
> hostname zebra
> password root
> enable password root
> !
> interface eth0
>  ip address 10.3.9.92/0
> !
> log file zebra.log
> 
> --------------ospfd.conf--------------------
> !
> hostname ospfd
> password root
> enable password root
> !
> router ospf
>   network 10.3.0.0/20 area 0
> !
> log stdout
> 
> --------------mplsd.conf--------------------
> !
> hostname mplsd
> password root
> enable password root
> !
> interface eth0
>  mpls ldp
> !
> router zebra
>  mpls ldp
> !
> log file ./mplsd.log
> !
> line vty
> !
> 
> Having done this, when I check up the command "show
> ldp neighbor" after telnetting to mplsd, I can see
> that it has recognized the other machine as the
> neighbor and is exchanging HELLO messages.
> But when, I try to run the command "show ldp
> database", all I get is "no label info has been
> exchanged".
> 
> I am guessing that this means that the LSPs haven't
> been set up since no label info was exchanged.
> 
> Is there something wrong in my config files? ...
> alternatively could you direct me as to how to ensure
> that the label info is exchanged between the two
> hosts.
> 
> Any help would be greatly appreciated.
> 
> Thanking in advance!
> 
> Cheers,
> Sameer
> 
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-- 
James R. Leu