[mpls-linux-general] Loss of next hop information if rebooting next hop router

[<Jon...@cs...>]

Dear all,

Just wondering if this is a desirable feature or not...

I use mplsadm2 to set up a LSP across three Linux mpls boxes (say, A, B
and C). If I rebooted box B, the next hop information of box A
"sometimes" disappeared!!!

For example, the original information of /proc/net/mpls_out was like
this:

0x0000000e 0/0/0 2 PUSH(gen 712111) SET(eth2,10.70.10.1)=20
0x0000000f 0/0/0 2 PUSH(gen 712112) SET(eth2,10.70.10.1)=20
0x00000010 0/0/0 2 SET(eth1,10.60.10.2)=20

If I rebooted the next hop mpls router (10.70.10.1), the section
"SET(eth2,10.70.10.1)" was automatically removed from the
/proc/net/mpls_out. i.e. the file looked like this:

0x0000000e 1476/157256/0 2 PUSH(gen 712111)=20
0x0000000f 1549/168728/0 2 PUSH(gen 712112)=20
0x00000010 2977/311864/0 2 SET(eth1,10.60.10.2)=20

Is it supposed to be like this??

Thanks for your comments...

Best Regards,
Jonathan