[mpls-linux-general] [mpls-general]MPLS error

[Steierlein M. <st...@gm...>]

Dear Developers,

I have succesfully compiled the MPLS support in the Linux kernel,
compiled and installed iproute and iptables, quagga with ldp support
as well.

Topology is as follows:

<eth0:192.168.0.198>[Excelsior]<eth1:172.16.0.2> --------
MPLS---------<eth1:172.16.0.1>[Constitution]<eth0:192.168.5.50>

Excelsior has a loopback address (dummy0) of 10.10.10.2 and
Constituion has a 10.10.10.1. OSPF works, ping succeeds.

Pinging from Excelsior to Constitutio (from 192.* addresses) fails.
Catting syslog tells the following:

Dec 21 10:50:26 constitution kernel: [ 3381.812080] MPLS: unable to
find a protocol driver(2048)
Dec 21 10:50:27 constitution kernel: [ 3382.820074] MPLS: unable to
find a protocol driver(2048)
Dec 21 10:50:42 constitution kernel: [ 3398.265689] MPLS: unable to
find a protocol driver(2048)
Dec 21 10:50:43 constitution kernel: [ 3399.272085] MPLS: unable to
find a protocol driver(2048)
Dec 21 10:50:44 constitution kernel: [ 3400.276094] MPLS: unable to
find a protocol driver(2048)
Dec 21 10:54:31 constitution kernel: [ 3627.067483] MPLS: unable to
find a protocol driver(2048)
Dec 21 10:54:36 constitution kernel: [ 3632.068088] MPLS: unable to
find a protocol driver(2048)

Kernel modules (mpls, mplsbr, xt_mpls etc.) loaded.

Configuration (Constitution):

!
interface dummy0
 ip address 10.10.10.1/32
 ipv6 nd suppress-ra
 mpls ip
 mpls labelspace 0
!
interface eth0
 ip address 192.168.5.50/24
 ipv6 nd suppress-ra
 mpls ip
 mpls labelspace 0
 multicast
!
interface eth1
 ip address 172.16.0.1/30
 ipv6 nd suppress-ra
 mpls ip
 mpls labelspace 0
 multicast

interface lo
!
mpls ldp
 egress connected
!
router ospf
 passive-interface dummy0
 network 10.10.10.1/32 area 0.0.0.0
 network 172.16.0.0/30 area 0.0.0.0
 network 192.168.5.0/24 area 0.0.0.0
!
ip forwarding
!
line vty
!
end

Excelsior:

log syslog
!
interface dummy0
 ip address 10.10.10.2/32
 ip address 10.10.10.20/32
 ipv6 nd suppress-ra
 mpls ip
 mpls labelspace 0
!
interface eth0
 ip address 192.168.0.198/24
 ipv6 nd suppress-ra
 mpls ip
 mpls labelspace 0
!
interface eth1
 ip address 172.16.0.2/30
 ipv6 nd suppress-ra
 mpls ip
 mpls labelspace 0
!
interface lo

interface mpls0
 ipv6 nd suppress-ra
!
interface tun0
 ipv6 nd suppress-ra
!
mpls ldp
 egress connected
!
router ospf
 network 10.10.10.2/32 area 0.0.0.0
 network 10.10.10.20/32 area 0.0.0.0
 network 172.16.0.0/30 area 0.0.0.0
 network 192.168.0.0/24 area 0.0.0.0
!
ip forwarding
!
line vty
!
end

The ip addresses on dummy0, Excelsior are a result of ospf not being
able to distribute routes to /32 addresses. I had to experiment, the
10.10.10.20 is completely unnececessary. Unfortunately router id-s are
not these addresses as Excelsior has OpenVPN installed and there is a
tun0 interface with 10.0.0.1.

Any help would be very much appreciated. Thanks!

Márton