I just figure it out, I needed to add new Primary tunnel 0 which is traversing the link between R1 and R2 with ERO next hop of R2 loopback and used tunnel 1 to backup tunnel 0 on the gig1/0/0.120.
I extended the failure detection with ip rsvp signaling hello bfd with 50ms and 150 dead timer. I would like to compare the convergence speed between tweaked ospf lsa throttling and the same config plus traffic-eng fast-rerout. it should make some different because ospf need to purge the route from the RIP and install the secondary path from the database to the RIP. in the case of fast-rerout the LSP is ready to serve and doesn't need to be computed. does that make sense! Will send an update after the test is carried-out. 2011/6/24 Abdel el Anazi <[email protected]> > Hi all, > > I'm trying to setup in lab Link-Protection but I'm facing some issues > it's doesn't seems to work probably, > > keep saying that *Cannot select backup for TE tunnel that is associated as > a backup* > Does that mean that I can't use link-protection on the PLR node can anyone > explain please. > > the topology is > > R1 ---------------------------- R2 > | | > | | > R3 ---------------------------- R4 > > Trying to protect the link between R1 and R2 on the R1 so R1 is the PLR and > the ERO for the tunnel is towards R1 ->R3->R4->R2 Loopback0 > > > this is my config: > > interface Vlan999 > Desc This will be used incase gi1/0/0.120 fail > mpls ip > mpls traffic-eng tunnels > ip rsvp bandwidth 256000 256000 > ! > interface GigabitEthernet1/0/0.120 > Des Protected Link > mpls ip > mpls traffic-eng tunnels > mpls traffic-eng backup-path Tunnel1 > ip rsvp bandwidth 256000 256000 > ip rsvp signalling hello > ip rsvp signalling hello refresh interval 50 > ! > interface Tunnel1 > ip unnumbered Loopback0 > tunnel source Loopback0 > tunnel mode mpls traffic-eng > tunnel destination 192.133.125.128 > tunnel mpls traffic-eng path-option 10 explicit name B-LINK > tunnel mpls traffic-eng fast-reroute bw-protect > ! > router ospf 65474 > router-id 192.133.125.129 > mpls traffic-eng router-id Loopback0 > mpls traffic-eng area 0 > ! > ip explicit-path name B-LINK enable > next-address 192.133.125.145 > next-address 192.133.125.144 > next-address 192.133.125.128 > > > show debug > IP RSVP debugging is on for: > fast-reroute state > fast-reroute signalling > fast-reroute errors > hello > > > Jun 24 11:47:35.000 MET: %LDP-5-SP: 192.133.125.128:0: session recovery > succeeded > > Jun 24 11:47:42.700 MET: %OSPF-5-ADJCHG: Process 65474, Nbr 192.133.125.128 > on GigabitEthernet1/0/0.120 from LOADING to FULL, Loading Done > > Jun 24 11:47:42.704 MET: RSVP-FRR: rsvp_frr_tpdb_node_change: topology data > base node change: event: 4 > Jun 24 11:47:42.704 MET: RSVP-FRR: rsvp_frr_tpdb_node_change: Start FRR > walk timer > Jun 24 11:47:42.732 MET: RSVP-FRR: rsvp_frr_tpdb_node_change: topology data > base node change: event: 4 > Jun 24 11:47:42.732 MET: RSVP-FRR: rsvp_frr_tpdb_node_change: walk timer is > already running > > Jun 24 11:47:52.704 MET: RSVP-FRR: rsvp_frr_event_walk_timer_expired: RSVP > FRR walk timer expired, walk all psbs > Jun 24 11:47:52.704 MET: RSVP-FRR: rsvp_frr_scan_psbs: -- examine all > PSB's > Jun 24 11:47:52.704 MET: RSVP-FRR > 192.133.125.129_5->192.133.125.128_1[192.133.125.129]: rsvp_frr_prepare: > Cannot select backup for TE tunnel that is associated as a backup > Jun 24 11:47:52.704 MET: RSVP-FRR > 192.133.125.129_5->192.133.125.128_1[192.133.125.129]: rsvp_frr_set_backup: > prepare failed > Jun 24 11:47:52.704 MET > : RSVP-FRR: rsvp_frr_scan_psbs: -- Finished > > > >
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