[mpls-linux-general] No more routing with MPLS kernel

[Homer S. <h_j...@ma...>]

Hi,

I was using the Intserv service (regular kernel + rsvp.0.72-rc2 wihtout the 
LABEL compilation option) together with zebra RIP routing and everything was 
OK.

I've changed the configuration according to the installation manual to be able to 
"deploy" a MPLS network ont this test bed and I get a quite stange behavior : 
from any hosts, pings to local network works fine and the routing table is still 
correctly updated by RIP but it seems that the kernel cannot use it. Whenever I 
"ping" a host that is behind a gateway (clearly identified by the routing table),  I 
get no answer not even "network unreachable" or any other error message. I 
have checked with tcpdump and it is clear that no packet comes out the host 
interface when trying to reach a non local network. Booting on my previous 
(non-mpls) kernel works fine.

The only clue I have is when I issue "ip route", I get what looks like normal routes 
"10.12.3.0/24 via 10.12.2.13 dev eth1 proto ...." but I also have "!!!Deficit 4, 
rta_len=3082" lines.

What can be wrong ? Is that a known problem ? Can it be due to wrong 
compilation process ? a missing kernel option ? a bad zebra configuration ?

Thanks for help :)

Eric

P.S. : I am using rsvpd.0.70-rc2, kernel 2.4.19 patched for MPLS and zebra 
0.93a



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