[mpls-linux-general] ldpd doesn't start properly

[Adrian P. <adr...@gm...>]

I'm trying to get ldpd to work and I'm having difficulties.

I'm connecting to ldpd using telnet and this is how I configured my LER:

e1:/home/irina.dumitrascu# cat /usr/etc/ldpd.conf
!
! Zebra configuration saved from vty
!   2006/03/13 16:01:36
!
hostname uml-1
password root
enable password root
!
interface eth0
!
interface eth1
 mpls ip
!
interface eth2
!
interface eth3
!
interface gre0
!
interface ip6tnl0
!
interface lo
!
interface mpls0
!
interface sit0
!
interface teql0
!
!
mpls ldp
 egress connected
!
line vty
!

On the LSR I set up both interfaces with mpls ip (eth0 and eth1), but
when I try to start ldpd on the lsr, it says:

e2:/home/irina.dumitrascu# ldpd -u root -P 6222
ldpd: ldp_interface.c:59: ldp_interface_create2: Assertion
`li->iff.index' failed.
Aborted.

I can start it if I comment out the 'mpls ip' lines from interface
eth0 and eth1.

After I manage to start LDP on the LSR, and try to run  show ldp I get
an error message: 'There isn't an active LDP instance.' This happens
after I have have configured manually the interfaces (mpls ip).

When I have the lsr manually configured (172.16.0.3) and the next ler
running (172.16.0.2), and on the lsr I issue the command 'mpls ldp'
this is what happens:

* the ler is constantly sending out LDP Hello packets
* when I issue mpls ldp on the lsr, the lsr sends a LDP Hello, and
then freezes (actually only ldpd freezes)

This is the output of tcpdump

16:18:56.453269 IP 172.16.0.2.646 > 224.0.0.2.646: LDP,
Label-Space-ID: 192.168.0.2:0, length: 34
16:19:01.453496 IP 172.16.0.2.646 > 224.0.0.2.646: LDP,
Label-Space-ID: 192.168.0.2:0, length: 34
16:19:02.924352 IP 172.16.0.3.646 > 224.0.0.2.646: LDP,
Label-Space-ID: 141.85.43.122:0, length: 34
16:19:06.453724 IP 172.16.0.2.646 > 224.0.0.2.646: LDP,
Label-Space-ID: 192.168.0.2:0, length: 34
16:19:11.453952 IP 172.16.0.2.646 > 224.0.0.2.646: LDP,
Label-Space-ID: 192.168.0.2:0, length: 34


Do you have any idea why this doesn't work?