Re: [mpls-linux-general] I hit the first point when I dig in LDP code

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

What version of mpls-linux are you running?
Make sure to start ldpd in the forground (ie not as a daemon) and redirect
it's STDERR and STDOUT to a file.  My guess is that there are some
error msgs being printed by the ldpd daemon.  You can also try enabling
all tracing (which also goes to STDOUT).

conf t
mpls ip
trace all
exit
int eth0
mpls ip

Try that and see if you can find anything in the output from ldpd.

On Mon, Feb 21, 2005 at 09:36:43PM +0800, ?????x wrote:
> Hi James,
>=20
> I follow the steps that you told me last time.
> The two hosts can't establish LDP session.=20
> In order to avoid wrong configure I enter, I capture out my configure bel=
ow.
>=20
> Host A's OSPF configure
> Current configure:
> !
> hostname ospfd
> password zebra
> log stdout
> !
> !
> !
> interface eth0
> !
> interface eth1
> !
> interface lo
> !
> interface sit0
> !
> router ospf
>  network 192.168.1.0/24 area 0.0.0.1
> !
> line vty
> !
> end
>=20
> Host A's LDP configure
> uml-1# conf t
> uml-1(config)# mpls ip
> uml-1(config-ldp)# exit
> uml-1(config)# int eth1
> uml-1(config-if)# mpls ip
> uml-1(config-ldp)# end
> uml-1# show ldp
> LSR-ID: c0a80102 Admin State: ENABLED
> Transport Address: c0a80102
> Control Mode: ORDERED   Repair Mode: GLOBAL
> Propogate Release: TRUE Label Merge: TRUE
> Retention Mode: LIBERAL Loop Detection Mode: NONE
> TTL-less-domain: FALSE
> Local TCP Port: 646     Local UDP Port: 646
> Keep-alive Time: 45     Keep-alive Interval: 15
> Hello Time: 15  Hello Interval: 5
>=20
> uml-1# show ldp neighbor
>      =20
>         No discovered neighbors
>=20
> uml-1# show ldp ?
>   addr
>   attr
>   database   Labeling information
>   discovery  Discovery information
>   fec
>   interface
>   neighbor   Discovered neighbors
>   session    Session information
>   <cr>
>=20
> uml-1# show running-config
> Current configuration:
> !
> hostname uml-1
> password root
> enable password root
> !
> interface eth0
> !
> interface eth1
> !
> interface lo
> !
> interface sit0
> !
> !
> mpls ip
>  egress connected
> !
> line vty
> !
> end
>=20
>=20
>=20
> Host B's OSPF configure
> Current configuration:
> !
> hostname ospfd
> password zebra
> log stdout
> !
> !
> !
> interface eth0
> !
> interface eth1
> !
> interface lo
> !
> interface sit0
> !
> router ospf
>  network 192.168.1.0/24 area 0.0.0.1
> !
> line vty
> !
> end
>=20
> Host B's LDP configure
> uml-1# conf t
> uml-1(config)# mpls ip
> uml-1(config-ldp)# exit
> uml-1(config)# int eth1
> uml-1(config-if)# mpls ip
> uml-1(config-ldp)# end
> uml-1# show ldp
> LSR-ID: c0a80101 Admin State: ENABLED
> Transport Address: c0a80101
> Control Mode: ORDERED   Repair Mode: GLOBAL
> Propogate Release: TRUE Label Merge: TRUE
> Retention Mode: LIBERAL Loop Detection Mode: NONE
> TTL-less-domain: FALSE
> Local TCP Port: 646     Local UDP Port: 646
> Keep-alive Time: 45     Keep-alive Interval: 15
> Hello Time: 15  Hello Interval: 5
>=20
> uml-1# show ldp neighbor
>=20
>         No discovered neighbors
>=20
> uml-1# show ldp ?
>   addr
>   attr
>   database   Labeling information
>   discovery  Discovery information
>   fec
>   interface
>   neighbor   Discovered neighbors
>   session    Session information
>   <cr>
>=20
>=20
> uml-1# show running-config
> Current configuration:
> !
> hostname uml-1
> password root
> enable password root
> !
> interface eth0
> !
> interface eth1
> !
> interface lo
> !
> interface sit0
> !
> !
> mpls ip
>  egress connected
> !
> line vty
> !
> end
>=20
>=20
>=20
>=20
> What's the problem? and What should I do?
>=20
>=20
> Thanks
> Best Regards
>=20
> Timothy
> 2005.02.21
>=20

--=20
James R. Leu
jl...@mi...