Re: [mpls-linux-general] LDP strange behaviour

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

There has been significant development on quagga-mpls since the
last release.  Until I create a formal release you will want to use
the lastest software from my development tree.  Please look to
http://mpls-linux.sf.net for more information about accesing my
development tree.

On Fri, Jul 29, 2005 at 04:57:35PM +0300, Razvan Deaconescu wrote:
> Hi,
>=20
> i have managed to create a network topology where to test MPLS Linux
> support and LDP Quagga suport. I have a functional 1.946a MPLS patched
> 2.6.9 Linux kernel and a 0.800 LDP patched quagga-0.96.4.
>=20
> The patch was applied succesfully in both cases. I tested the MPLS
> enabled kernel using patched iproute2.
>=20
> In my first phase i created a small OSPFv2 routing topology which
> worked fine; the second phase was enabling ldp on that interface;
> however i am experiencing some strange problems.
>=20
> The LDP routers send each other hello messages but no actual
> connection seems to be happening. And above all that all the routers
> work properly but they aren't using any labels (some of them have all
> the interfaces mpls enabled). So everything works fine in my small
> topology, but not LDP - which is however working but doesn't to
> participate at the actual routing process.
>=20
> Here are my configuration files for zebra, ospfd and ldpd (it's a
> configuration for an egress router)
>=20
> ## zebra configuration file ##
> !
> ! Zebra configuration saved from vty
> !   2005/07/29 13:18:31
> !
> hostname Router
> password zebra
> enable password zebra
> service advanced-vty
> !
> mpls labelspace 1
> !
> interface eth0
> !
> interface eth1
>  description ldp-enabled interface=20
>  mpls labelspace 1
>  ip address 11.0.1.1/30
> !
> interface lo
>  description Loopback=20
> !
> interface sit0
> !
> !
> line vty
>  exec-timeout 0 0
> !
>=20
> ## ospfd configuration file ##
>=20
> ! -*- ospf -*-
> !
> ! OSPFd sample configuration file
> !
> !
> hostname ospfd
> password zebra
> enable password zebra
> !
> router ospf
>   network 11.0.1.0/30 area 0
> !
> line vty
> 	exec-timeout 0 0
> !
>=20
> ## ldpd configuration file ##
> !
> ! Zebra configuration saved from vty
> !   2005/07/29 13:49:23
> !
> hostname ldpd
> password test
> enable password test
> !
> interface eth0
>  description large network interface (no mpls)=20
> !
> interface eth1
>  description egress label enabled interface=20
>  mpls ip
> !
> interface lo
>  description Loopback interface=20
> !
> interface sit0
> !
> mpls ip
>  egress connected
> !
> line vty
>  exec-timeout 0 0
> !
>=20
> I would also want to know how do i choose between all the ldp options
> (liberal/conservative retention, downstream on demand, downstream
> unsolicited); i didn't manage to find these options using the CLI.
>=20
> thanks,
> Razvan
>=20
>=20
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--=20
James R. Leu
jl...@mi...