02-27-2014 12:42 AM
Hi,
The topology looks like below. The four routers are connected in the below said fashion. Note 186 and 195 are connected. The IGP is ISIS.
7600 185
|
|
CRS-8 80
/\
/ \
7600 186----ASR9K 195
I have configured the p2mp tunnel on the router 185(head) tunnel765(185->80->186 and 195). 185 headend router ios ver is 15.3.3.
If the interface Gig 0/3/0/7(connected to 186) on .80(mid) is bought down the traffic is fast rerouted towards backup tunnel 387 (80->195->186). But this is not shown in the output of “sh mpls traffic-eng fast-reroute database”.
Please find the other outputs that show the FRR ready and active highlighted below when the int Gig 0/3/0/7 is up and when it is bought down. Any idea what could be the problem?
If we have a p2p MPLS te tunnel from 185->80->195 instead of p2mp, the CRS shows the FRR information as READY and when the interface is bought down trasitions to ACTIVE state.
RP/0/RP1/CPU0:CRS-2-P2-80#sh mpls traffic-eng tunnels backup | RP/0/RP1/CPU0:CRS-2-P2-80#sh mpls traffic-eng tunnels backup |
Tue Feb 25 06:45:08.819 UTC | Tue Feb 25 06:47:22.213 UTC |
tunnel-te387 | tunnel-te387 |
Admin: up, Oper: up | Admin: up, Oper: up |
Src: 192.168.169.80, Dest: 192.168.169.186, Instance: 2 | Src: 192.168.169.80, Dest: 192.168.169.186, Instance: 2 |
Fast Reroute Backup Provided: | Fast Reroute Backup Provided: |
Protected LSPs: 1 (0 active) | Protected LSPs: 1 (1 active) |
Protected S2L Sharing Families: 1 | Protected S2L Sharing Families: 1 |
Protected S2Ls: 1 | Protected S2Ls: 1 |
Backup BW: any-class (no limit specified), Inuse: 0 kbps | Backup BW: any-class (no limit specified), Inuse: 0 kbps |
Protected i/fs: Gi0/3/0/7 | Protected i/fs: Gi0/3/0/7 |
RP/0/RP1/CPU0:CRS-2-P2-80# | RP/0/RP1/CPU0:CRS-2-P2-80# |
RP/0/RP1/CPU0:CRS-2-P2-80#sh mpls traffic-eng tunnels protection frr tunnel-id 765 | RP/0/RP1/CPU0:CRS-2-P2-80#sh mpls traffic-eng tunnels protection frr tunnel-id 765 |
Tue Feb 25 06:46:11.067 UTC | Tue Feb 25 06:48:00.279 UTC |
p2mp P2MP S2L Tunnel Id: 765 | p2mp P2MP S2L Tunnel Id: 765 |
Role Midpoint, signaled, connection up | Role Midpoint, signaled, connection up |
Src: 192.168.169.185, ExtId: 192.168.169.185, Instance: 486 | Src: 192.168.169.185, ExtId: 192.168.169.185, Instance: 486 |
Dest: 192.168.169.186, P2MP Id: 765, OrigId: 192.168.169.185, SGId: 1 | Dest: 192.168.169.186, P2MP Id: 765, OrigId: 192.168.169.185, SGId: 1 |
Fast Reroute Protection: Requested | Fast Reroute Protection: Requested |
Inbound: FRR Inactive | Inbound: FRR Inactive |
S2L signalling info: | S2L signalling info: |
Original: in i/f: GigabitEthernet0/3/0/9, label: 1048568, phop: 192.168.169.10 | Original: in i/f: GigabitEthernet0/3/0/9, label: 1048568, phop: 192.168.169.10 |
Outbound: FRR Ready | Outbound: FRR Active |
Backup tunnel-te387 to S2L nhop | Backup tunnel-te387 to S2L nhop |
tunnel-te387: out i/f: GigabitEthernet0/3/0/8, next hop: 192.168.169.2 | tunnel-te387: out i/f: GigabitEthernet0/3/0/8, next hop: 192.168.169.2 |
S2L signalling info: | S2L signalling info: |
Original: out i/f: GigabitEthernet0/3/0/7, label: 1007, next hop: 192.168.169.6 | Original: out i/f: GigabitEthernet0/3/0/7, label: 1007, next hop: 192.168.169.6 |
With FRR: out i/f: tunnel-te387, label: 1007 | With FRR: out i/f: tunnel-te387, label: 1007 |
Sub-LSP bw: 0 kbps, Backup level: any-class unlimited, type: CT0 | Sub-LSP bw: 0 kbps, Backup level: any-class unlimited, type: CT0 |
p2mp P2MP S2L Tunnel Id: 765 | p2mp P2MP S2L Tunnel Id: 765 |
Role Midpoint, signaled, connection up | Role Midpoint, signaled, connection up |
Src: 192.168.169.185, ExtId: 192.168.169.185, Instance: 486 | Src: 192.168.169.185, ExtId: 192.168.169.185, Instance: 486 |
Dest: 192.168.169.195, P2MP Id: 765, OrigId: 192.168.169.185, SGId: 2 | Dest: 192.168.169.195, P2MP Id: 765, OrigId: 192.168.169.185, SGId: 2 |
Fast Reroute Protection: Requested | Fast Reroute Protection: Requested |
Inbound: FRR Inactive | Inbound: FRR Inactive |
S2L signalling info: | S2L signalling info: |
Original: in i/f: GigabitEthernet0/3/0/9, label: 1048568, phop: 192.168.169.10 | Original: in i/f: GigabitEthernet0/3/0/9, label: 1048568, phop: 192.168.169.10 |
Outbound: FRR Inactive | Outbound: FRR Inactive |
S2L signalling info: | S2L signalling info: |
Original: out i/f: GigabitEthernet0/3/0/8, label: 160009, next hop: 192.168.169.2 | Original: out i/f: GigabitEthernet0/3/0/8, label: 160009, next hop: 192.168.169.2 |
03-10-2014 02:45 AM
finally found the answer......"show mpls traffic-eng fast-reroute database displays only P2P FRR state. For P2MP tunnels, use show mrib mpls traffic-eng fast-reroute database"
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