FRR NHOP tunnel disappear after failure. Im about smashing my

Hi,

I faced a very weird issue with NHOP tunnels. Everything looks good until
next hop fails. I can see are *ready* and after failure back up tunnels
become *active* and then after couple of seconds I cannot see them in FRR
database anymore!!!!!!!

interface Tunnel101
 description Primary tunnel
 ip unnumbered Loopback0
 load-interval 30
 mpls ip
 tunnel mode mpls traffic-eng
 tunnel destination 172.25.224.1
 tunnel mpls traffic-eng autoroute announce
 tunnel mpls traffic-eng path-option 5 explicit name PRIMARY-PATH
 tunnel mpls traffic-eng path-option 20 dynamic
 tunnel mpls traffic-eng fast-reroute
end
!
interface Tunnel1051
 description nnhop protect tunne
 ip unnumbered Loopback0
 load-interval 30
 mpls ip
 tunnel mode mpls traffic-eng
 tunnel destination 172.25.224.9
 tunnel mpls traffic-eng autoroute announce
 tunnel mpls traffic-eng priority 5 5
 tunnel mpls traffic-eng path-option 1 explicit name BACKUP-PATH
end

*Before failure*

R1#sh mpls traf fa da
P2P Headend FRR information:
Protected tunnel In-label Out intf/label FRR intf/label
Status
--------------------------- -------- -------------- --------------
------
Tunnel101 Tun hd Fa0/0:31 Tu1051:31
Ready

*4 Seconds after failure:*

R1#sh mpls traf fa da
P2P Headend FRR information:
Protected tunnel In-label Out intf/label FRR intf/label
Status
--------------------------- -------- -------------- --------------
------
Tunnel101 Tun hd Fa0/0:31 Tu1051:31
Active

*After 30 seconds:* Tunnel is gone!!!

R1#sh mpls traf fa da
P2P Headend FRR information:
Protected tunnel In-label Out intf/label FRR intf/label
Status
--------------------------- -------- -------------- --------------
------

And yes backup command is confgiured under interface as you can see it
works in nromal situation without failure!!!

After restoring failure , tunnel will not come up!!!

R1#sh mpls traf fa da
P2P Headend FRR information:
Protected tunnel In-label Out intf/label FRR intf/label
Status
--------------------------- -------- -------------- --------------
------

I have to shut primary tunnel and backup and unshut them to get this back
under FRR database.

After I did above:
R1#sh mpls tra fa da

P2P Headend FRR information:
Protected tunnel In-label Out intf/label FRR intf/label
Status
--------------------------- -------- -------------- --------------
------
Tunnel101 Tun hd Fa0/0:37 Tu1051:37
Ready

What the hell is going on here?????

Thanks!

Jeremy

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Received on Wed Jul 04 2012 - 13:59:07 ART