Configuration
This section shows the configuration procedure to create a detour in the ring topology.
Topology
Configure the primary LSP in the below ring topology from the head end to the tail end.
For example, consider PE1 as the head end and PE2 as the tail end, and the primary LSP is via R1, R2, and R3. In this case, first configure the Fast Reroute Configuration (one-to-one method) on the PE1 and PE2 and then configure the detour-allow-primary-upstream-path command in all the nodes. For example, if the link between R3 and PE2 is down, the detour follows via primary LSP to reach PE2.
Figure 96. RSVP-TE FRR failover ring topology - 1:1 Detour
PE1 - OSPF Configurations
This section shows how to configure the Open Shortest Path First (OSPF) as Interior Gateway Protocol (IGP).
|
PE1#configure terminal |
Enter configure mode. |
|
PE1(config)#interface xe3 |
Enter interface mode |
|
PE1(config-if)#ip address 61.61.61.3/24 |
Configure IPv4 address |
|
PE1(config-if)#label-switching |
Configure label switching on |
|
PE1(config-if)#enable-rsvp |
Enable RSVP on |
|
PE1(config-if)#exit |
Exit interface mode. |
|
PE1(config)#interface xe12 |
Enter interface mode |
|
PE1(config-if)#ip address 58.58.58.2/24 |
Configure IPv4 address |
|
PE1(config-if)#label-switching |
Configure label switching on |
|
PE1(config-if)#enable-rsvp |
Enable RSVP on |
|
PE1(config-if)#exit |
Exit interface mode. |
|
PE1(config)#interface lo |
Enter loopback interface mode. |
|
PE1(config-if)#ip address 26.26.26.26/32 secondary |
Configure IPv4 address |
|
PE1(config-if)#exit |
Exit interface mode. |
|
PE1(config)#router ospf 100 |
Enter OSPF router mode. |
|
PE1(config-router)#ospf router-id 26.26.26.26 |
Assign router ID |
|
PE1(config-router)#network 26.26.26.26/32 area 0.0.0.0 |
Define network |
|
PE1(config-router)#network 58.58.58.0/24 area 0.0.0.0 |
Define network |
|
PE1(config-router)#network 61.61.61.0/24 area 0.0.0.0 |
Define network |
|
PE1(config-router)#exit |
Exit router OSPF mode. |
|
PE1(config)#commit |
Commit the transaction. |
|
PE1(config)#exit |
Exit the configure mode. |
PE1 - RSVP Configurations
This section shows:
| • | The configuration of detour to take the upstream path of protected LSP. |
| • | The configuration of the primary LSP and attaching it to the RSVP trunk. |
| • | The configuration of the FRR. |
|
PE1#configure terminal |
Enter configure mode. |
|
PE1(config)#router rsvp |
Enable RSVP globally. |
|
PE1(config-router)#detour-allow-primary-upstream-path |
Configure this CLI to allow detour to take primary upstream path. |
|
PE1(config-router)#exit |
Exit router RSVP mode. |
|
PE1(config)#rsvp-path PE1-PE2-01 mpls |
Configure RSVP path PE1-PE2-01 and enter path mode. |
|
PE1(config-path)#61.61.61.2 strict |
Configure this explicit route path as a strict hop. |
|
PE1(config-path)#23.23.23.3 strict |
Configure this explicit route path as a strict hop. |
|
PE1(config-path)#41.41.41.3 strict |
Configure this explicit route path as a strict hop. |
|
PE1(config-path)#56.56.56.3 strict |
Configure this explicit route path as a strict hop. |
|
PE1(config-path)#rsvp-trunk TR-PE1-PE2-MP-01 ipv4 |
Create an RSVP trunk TR-PE1-PE2-MP-01 and enter the trunk mode. |
|
PE1(config-trunk)#primary fast-reroute protection one-to-one |
Configure primary fast reroute protection. |
|
PE1(config-trunk)#primary fast-reroute node-protection |
Configure node protection. |
|
PE1(config-trunk)#primary path PE1-PE2-01 |
Configure trunk PE1-PE2-01 to use as the primary LSP. |
|
PE1(config-trunk)#from 26.26.26.26 |
Assign the source loopback address |
|
PE1(config-trunk)#to 22.22.22.22 |
Assign the destination loopback address |
|
PE1(config-trunk)#exit |
Exit router RSVP trunk mode. |
|
PE1(config)#commit |
Commit the transaction. |
|
PE1(config)#exit |
Exit the configure mode. |
R1 - OSPF Configurations
This section shows how to configure the Open Shortest Path First (OSPF) as Interior Gateway Protocol (IGP).
|
R1#configure terminal |
Enter configure mode. |
|
R1(config)#interface xe3 |
Enter interface mode |
|
R1(config-if)#ip address 61.61.61.2/24 |
Configure IPv4 address |
|
R1(config-if)#label-switching |
Configure label switching on |
|
R1(config-if)#enable-rsvp |
Enable RSVP on interface |
|
R1(config-if)#exit |
Exit interface mode. |
|
R1(config)#interface xe47 |
Enter interface mode |
|
R1(config-if)#ip address 23.23.23.2/24 |
Configure IPv4 address |
|
R1(config-if)#label-switching |
Configure label switching on |
|
R1(config-if)#enable-rsvp |
Enable RSVP on interface |
|
R1(config-if)#exit |
Exit interface mode. |
|
R1(config)#interface lo |
Enter loopback interface mode. |
|
R1(config-if)#ip address 24.24.24.24/32 secondary |
Configure IPv4 address |
|
R1(config-if)#exit |
Exit interface mode. |
|
R1(config)#router ospf 100 |
Enter OSPF router mode. |
|
R1(config-router)#ospf router-id 24.24.24.24 |
Assign router-id for OSPF. |
|
R1(config-router)#network 23.23.23.0/24 area 0.0.0.0 |
Define network |
|
R1(config-router)#network 24.24.24.24/32 area 0.0.0.0 |
Define network |
|
R1(config-router)#network 61.61.61.0/24 area 0.0.0.0 |
Define network |
|
R1(config-router)#exit |
Exit router OSPF mode. |
|
R1(config)#commit |
Commit the transaction. |
|
R1(config)#exit |
Exit the configure mode. |
R1 - RSVP Configurations
This section shows how to configure the detour to take the upstream path of protected LSP.
|
R1#configure terminal |
Enter configure mode. |
|
R1(config)#router rsvp |
Enable RSVP globally. |
|
R1(config-router)#detour-allow-primary-upstream-path |
Configure this CLI to allow detour to take primary upstream path. |
|
R1(config-router)#exit |
Exit router RSVP mode. |
|
R1(config)#commit |
Commit the transaction. |
|
R1(config)#exit |
Exit the configure mode. |
R2 - OSPF Configurations
This section shows how to configure the Open Shortest Path First (OSPF) as Interior Gateway Protocol (IGP).
|
R2#configure terminal |
Enter configure mode. |
|
R2(config)#interface xe1 |
Enter interface mode |
|
R2(config-if)#ip address 41.41.41.2/24 |
Configure IPv4 address |
|
R2(config-if)#label-switching |
Configure label switching on |
|
R2(config-if)#enable-rsvp |
Enable RSVP on |
|
R2(config-if)#exit |
Exit interface mode. |
|
R2(config)#interface xe47 |
Enter interface mode |
|
R2(config-if)#ip address 23.23.23.3/24 |
Configure IPv4 address |
|
R2(config-if)#label-switching |
Configure label switching on |
|
R2(config-if)#enable-rsvp |
Enable RSVP on |
|
R2(config-if)#exit |
Exit interface mode. |
|
R2(config)#interface lo |
Enter loopback interface mode. |
|
R2(config-if)#ip address 88.88.88.88/32 secondary |
Configure IPv4 address |
|
R2(config-if)#exit |
Exit interface mode. |
|
R2(config)#router ospf 100 |
Enter OSPF router mode. |
|
R2(config-router)#ospf router-id 88.88.88.88 |
Assign router-id |
|
R2(config-router)#network 23.23.23.0/24 area 0.0.0.0 |
Define network |
|
R2(config-router)#network 41.41.41.0/24 area 0.0.0.0 |
Define network |
|
R2(config-router)#network 88.88.88.88/32 area 0.0.0.0 |
Define network |
|
R2(config-router)#exit |
Exit router OSPF mode. |
|
R2(config)#commit |
Commit the transaction. |
|
R2(config)#exit |
Exit the configure mode. |
R2 - RSVP Configurations
This section shows how to configure the detour to take the upstream path of protected LSP.
|
R2#configure terminal |
Enter configure mode. |
|
R2(config)#router rsvp |
Enable RSVP globally. |
|
R2(config-router)#detour-allow-primary-upstream-path |
Configure this CLI to allow detour to take primary upstream path. |
|
R2(config-router)#exit |
Exit router RSVP mode. |
|
R2(config)#commit |
Commit the transaction. |
|
R2(config)#exit |
Exit the configure mode. |
R3 - OSPF Configurations
This section shows how to configure the Open Shortest Path First (OSPF) as Interior Gateway Protocol (IGP).
|
R3#configure terminal |
Enter configure mode. |
|
R3(config)#interface xe1 |
Enter interface mode |
|
R3(config-if)#ip address 41.41.41.3/24 |
Configure IPv4 address |
|
R3(config-if)#label-switching |
Configure label switching on |
|
R3(config-if)#enable-rsvp |
Enable RSVP on |
|
R3(config-if)#exit |
Exit interface mode. |
|
R3(config)#interface xe5 |
Enter interface mode |
|
R3(config-if)#ip address 56.56.56.2/24 |
Configure IPv4 address |
|
R3(config-if)#label-switching |
Configure label switching on |
|
R3(config-if)#enable-rsvp |
Enable RSVP on |
|
R3(config-if)#exit |
Exit interface mode. |
|
R3(config)#interface lo |
Enter loopback interface mode. |
|
R3(config-if)#ip address 99.99.99.99/32 secondary |
Configure IPv4 address |
|
R3(config-if)#exit |
Exit interface mode. |
|
R3(config)#router ospf 100 |
Enter OSPF router mode. |
|
R3(config-router)#ospf router-id 99.99.99.99 |
Assign router-id for OSPF. |
|
R3(config-router)#network 41.41.41.0/24 area 0.0.0.0 |
Define network |
|
R3(config-router)#network 56.56.56.0/24 area 0.0.0.0 |
Define network |
|
R3(config-router)#network 99.99.99.99/32 area 0.0.0.0 |
Define network |
|
R3(config-router)#exit |
Exit router OSPF mode. |
|
R3(config)#commit |
Commit the transaction. |
|
R3(config)#exit |
Exit the configure mode. |
R3 - RSVP Configurations
This section shows how to configure the detour to take the upstream path of protected LSP.
|
R3#configure terminal |
Enter configure mode. |
|
R3(config)#router rsvp |
Enable RSVP globally. |
|
R3(config-router)#detour-allow-primary-upstream-path |
Configure this CLI to allow detour to take primary upstream path. |
|
R3(config-router)#exit |
Exit router RSVP mode. |
|
R3(config)#commit |
Commit the transaction. |
|
R3(config)#exit |
Exit the configure mode. |
R5 - OSPF Configurations
This section shows how to configure the Open Shortest Path First (OSPF) as Interior Gateway Protocol (IGP).
|
R5#configure terminal |
Enter configure mode. |
|
R5(config)#interface xe1 |
Enter interface mode |
|
R5(config-if)#ip address 58.58.58.3/24 |
Configure IPv4 address. |
|
R5(config-if)#label-switching |
Configure label switching on |
|
R5(config-if)#enable-rsvp |
Enable RSVP on |
|
R5(config-if)#exit |
Exit interface mode. |
|
R5(config)#interface xe13 |
Enter interface mode |
|
R5(config-if)#ip address 54.54.54.4/24 |
Configure IPv4 address |
|
R5(config-if)#label-switching |
Configure label switching on |
|
R5(config-if)#enable-rsvp |
Enable RSVP on |
|
R5(config-if)#exit |
Exit interface mode. |
|
R5(config)#interface lo |
Enter loopback interface mode. |
|
R5(config-if)#ip address 17.17.17.17/32 secondary |
Configure IPv4 address |
|
R5(config-if)#exit |
Exit interface mode. |
|
R5(config)#router ospf 100 |
Enter OSPF router mode. |
|
R5(config-router)#ospf router-id 17.17.17.17 |
Assign router-id for OSPF. |
|
R5(config-router)#network 17.17.17.17/32 area 0.0.0.0 |
Define network |
|
R5(config-router)#network 54.54.54.0/24 area 0.0.0.0 |
Define network |
|
R5(config-router)#network 58.58.58.0/24 area 0.0.0.0 |
Define network |
|
R5(config-router)#exit |
Exit router OSPF mode. |
|
R5(config)#commit |
Commit the transaction. |
|
R5(config)#exit |
Exit the configure mode. |
R5 - RSVP Configurations
This section shows how to configure the detour to take the upstream path of protected LSP.
|
R5#configure terminal |
Enter configure mode. |
|
R5(config)#router rsvp |
Enable RSVP globally. |
|
R5(config-router)#detour-allow-primary-upstream-path |
Configure this CLI to allow detour to take primary upstream path |
|
R5(config-router)#exit |
Exit router RSVP mode |
|
R5(config)#commit |
Commit the transaction. |
|
R5(config)#exit |
Exit the configure mode. |
R4 - OSPF Configurations
This section shows how to configure the Open Shortest Path First (OSPF) as Interior Gateway Protocol (IGP).
|
R4#configure terminal |
Enter configure mode. |
|
R4(config)#interface xe13 |
Enter interface mode |
|
R4(config-if)#ip address 54.54.54.3/24 |
Configure IPv4 address |
|
R4(config-if)#label-switching |
Configure label switching on |
|
R4(config-if)#enable-rsvp |
Enable RSVP on interface |
|
R4(config-if)#exit |
Exit interface mode. |
|
R4(config)#interface xe8 |
Enter interface mode |
|
R4(config-if)#ip address 62.62.62.3/24 |
Configure IPv4 address |
|
R4(config-if)#label-switching |
Configure label switching on |
|
R4(config-if)#enable-rsvp |
Enable RSVP on |
|
R4(config-if)#exit |
Exit interface mode. |
|
R4(config)#interface lo |
Enter loopback interface mode. |
|
R4(config-if)#ip address 48.48.48.48/32 secondary |
Configure IPv4 address |
|
R4(config-if)#exit |
Exit interface mode. |
|
R4(config)#router ospf 100 |
Enter OSPF router mode. |
|
R4(config-router)#ospf router-id 48.48.48.48 |
Assign router-id for OSPF. |
|
R4(config-router)#network 48.48.48.48/32 area 0.0.0.0 |
Define network |
|
R4(config-router)#network 54.54.54.0/24 area 0.0.0.0 |
Define network |
|
R4(config-router)#network 62.62.62.0/24 area 0.0.0.0 |
Define network 62.62.62.0/24 under router OSPF. |
|
R4(config-router)#exit |
Exit router OSPF mode. |
|
R4(config)#commit |
Commit the transaction. |
|
R4(config)#exit |
Exit the configure mode. |
R4 - RSVP Configurations
This section shows how to configure the detour to take the upstream path of protected LSP.
|
R4#configure terminal |
Enter configure mode. |
|
R4(config)#router rsvp |
Enable RSVP globally. |
|
R4(config-router)#detour-allow-primary-upstream-path |
Configure this CLI to allow detour to take primary upstream path. |
|
R4(config-router)#exit |
Exit router RSVP mode. |
|
R4(config)#commit |
Commit the transaction. |
|
R4(config)#exit |
Exit the configure mode. |
PE2 - OSPF Configurations
This section shows how to configure the Open Shortest Path First (OSPF) as Interior Gateway Protocol (IGP).
|
PE2#configure terminal |
Enter configure mode. |
|
PE2(config)#interface xe5 |
Enter interface mode |
|
PE2(config-if)#ip address 56.56.56.3/24 |
Configure IPv4 address |
|
PE2(config-if)#label-switching |
Configure label switching on |
|
PE2(config-if)#enable-rsvp |
Enable RSVP on |
|
PE2(config-if)#exit |
Exit interface mode. |
|
PE2(config)#interface ge8 |
Enter interface mode |
|
PE2(config-if)#ip address 62.62.62.2/24 |
Configure IPv4 address |
|
PE2(config-if)#label-switching |
Configure label switching on |
|
PE2(config-if)#enable-rsvp |
Enable RSVP on |
|
PE2(config-if)#exit |
Exit interface mode. |
|
PE2(config)#interface lo |
Enter loopback interface mode. |
|
PE2(config-if)#ip address 22.22.22.22/32 secondary |
Configure IPv4 address |
|
PE2(config-if)#exit |
Exit interface mode. |
|
PE2(config)#router ospf 100 |
Enter OSPF router mode. |
|
PE2(config-router)#ospf router-id 22.22.22.22 |
Assign router-id for OSPF. |
|
PE2(config-router)#network 22.22.22.22/32 area 0.0.0.0 |
Define network |
|
PE2(config-router)#network 56.56.56.0/24 area 0.0.0.0 |
Define network |
|
PE2(config-router)#network 62.62.62.0/24 area 0.0.0.0 |
Define network |
|
PE2(config-router)#exit |
Exit router OSPF mode. |
|
PE2(config)#commit |
Commit the transaction. |
|
PE2(config)#exit |
Exit the configure mode. |
PE2 - RSVP Configurations
This section shows:
| • | The configuration of detour to take the upstream path of protected LSP. |
| • | The configuration of the primary LSP and attaching it to the RSVP trunk. |
| • | The configuration of the FRR. |
|
PE2#configure terminal |
Enter configure mode. |
|
PE2(config)#router rsvp |
Enable RSVP globally. |
|
PE2(config-router)#detour-allow-primary-upstream-path |
Configure this CLI to allow detour to take primary upstream path. |
|
PE2(config-router)#exit |
Exit router RSVP mode. |
|
PE2(config)#rsvp-path PE2-PE1-01 mpls |
Configure RSVP path PE2-PE1-01 and enter path mode. |
|
PE2(config-path)#56.56.56.2 strict |
Configure this explicit route path as a strict hop. |
|
PE2(config-path)#41.41.41.2 strict |
Configure this explicit route path as a strict hop. |
|
PE2(config-path)#23.23.23.2 strict |
Configure this explicit route path as a strict hop. |
|
PE2(config-path)#61.61.61.3 strict |
Configure this explicit route path as a strict hop. |
|
PE2(config-router)#exit |
Exit path mode. |
|
PE2(config-path)#rsvp-trunk TR-PE2-PE1-MP-01 ipv4 |
Create an RSVP trunk TR-PE2-PE1-MP-01 and enter the Trunk mode. |
|
PE2(config-trunk)#primary fast-reroute protection one-to-one |
Configure primary fast-reroute protection. |
|
PE2(config-trunk)#primary fast-reroute node-protection |
Configure node protection. |
|
PE2(config-trunk)#primary path PE2-PE1-01 |
Configure trunk PE2-PE1-01 to use as the primary LSP. |
|
PE2(config-trunk)#from 22.22.22.22 |
Assign the source loopback address |
|
PE2(config-trunk)#to 26.26.26.26 |
Assign the destination loopback address |
|
PE2(config-trunk)#exit |
Exit router RSVP trunk mode. |
|
PE2(config)#commit |
Commit the transaction. |
|
PE2(config)#exit |
Exit the configure mode. |
Validation
PE1
Below is the validation output of RSVP LSPs from PE1 to PE2 via R1>R2>R3:
#show rsvp session
Type : PRI - Primary, SEC - Secondary, DTR - Detour, BPS - Bypass
State : UP - Up, DN - Down, BU - Backup in Use, SU - Secondary in Use, FS - Forced to Secondary
* indicates the session is active with local repair at one or more nodes
(P) indicates the secondary-priority session is acting as primary
Ingress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 26.26.26.26 5001 2205 PRI TR-PE1-PE2-MP-01-Primary UP 02:12:32 1 1 SE - 52480
22.22.22.22 58.58.58.2 5001 2205 DTR TR-PE1-PE2-MP-01-Detour UP 00:34:04 1 2 SE - 25600
Total 2 displayed, Up 2, Down 0.
Transit RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 61.61.61.2 5001 2205 PRI TR-PE1-PE2-MP-01-Detour UP 00:33:19 1 2 SE 25602 25600
Total 1 displayed, Up 1, Down 0.
Egress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
26.26.26.26 22.22.22.22 5001 2205 PRI TR-PE2-PE1-MP-01-Primary UP 02:12:27 1 1 SE 25601 -
26.26.26.26 62.62.62.2 5001 2205 PRI TR-PE2-PE1-MP-01-Detour UP 02:09:08 1 1 SE 25600 -
Total 2 displayed, Up 2, Down 0.
Below is the validation output of RSVP ping and trace from PE1 to PE2:
#ping mpls rsvp egress 22.22.22.22 detail
Sending 5 MPLS Echos to 22.22.22.22, timeout is 5 seconds
Codes:
'!' - Success, 'Q' - request not sent, '.' - timeout,
'x' - Retcode 0, 'M' - Malformed Request, 'm' - Errored TLV,
'N' - LBL Mapping Err, 'D' - DS Mismatch,
'U' - Unknown Interface, 'R' - Transit (LBL Switched),
'B' - IP Forwarded, 'F' No FEC Found, 'f' - FEC Mismatch,
'P' - Protocol Error, 'X' - Unknown code,
'Z' - Reverse FEC Validation Failed
Type 'Ctrl+C' to abort
! seq_num = 1 56.56.56.3 0.91 ms
! seq_num = 2 56.56.56.3 0.54 ms
! seq_num = 3 56.56.56.3 0.48 ms
! seq_num = 4 56.56.56.3 0.47 ms
! seq_num = 5 56.56.56.3 0.50 ms
Success Rate is 100.00 percent (5/5)
round-trip min/avg/max = 0.47/0.69/0.91
PE1#
#trace mpls rsvp egress 22.22.22.22 detail
Tracing MPLS Label Switched Path to 22.22.22.22, timeout is 5 seconds
Codes:
'!' - Success, 'Q' - request not sent, '.' - timeout,
'x' - Retcode 0, 'M' - Malformed Request, 'm' - Errored TLV,
'N' - LBL Mapping Err, 'D' - DS Mismatch,
'U' - Unknown Interface, 'R' - Transit (LBL Switched),
'B' - IP Forwarded, 'F' No FEC Found, 'f' - FEC Mismatch,
'P' - Protocol Error, 'X' - Unknown code,
'Z' - Reverse FEC Validation Failed
Type 'Ctrl+C' to abort
0 61.61.61.3 [Labels: 52480]
R 1 61.61.61.2 [Labels: 25600] 0.71 ms
R 2 23.23.23.3 [Labels: 25600] 0.83 ms
R 3 41.41.41.3 [Labels: 25600] 0.88 ms
! 4 56.56.56.3 0.69 ms
Below are the outputs from transit nodes R1, R2, and R3 for primary LSP configured:
R1
#show rsvp session
Type : PRI - Primary, SEC - Secondary, DTR - Detour, BPS - Bypass
State : UP - Up, DN - Down, BU - Backup in Use, SU - Secondary in Use, FS - Forced to Secondary
* indicates the session is active with local repair at one or more nodes
(P) indicates the secondary-priority session is acting as primary
Ingress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 61.61.61.2 5001 2205 DTR TR-PE1-PE2-MP-01-Detour UP 00:38:43 1 2 SE - 25602
26.26.26.26 23.23.23.2 5001 2205 DTR TR-PE2-PE1-MP-01-Detour UP 00:38:44 1 1 SE - 25603
Total 2 displayed, Up 2, Down 0.
Transit RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 26.26.26.26 5001 2205 PRI TR-PE1-PE2-MP-01-Primary UP 02:17:55 1 1 SE 52480 25600
22.22.22.22 23.23.23.3 5001 2205 PRI TR-PE1-PE2-MP-01-Detour UP 00:37:58 1 2 SE 52482 25602
26.26.26.26 22.22.22.22 5001 2205 PRI TR-PE2-PE1-MP-01-Primary UP 02:17:50 1 1 SE 52481 25601
Total 3 displayed, Up 3, Down 0.
R2
#show rsvp session
Type : PRI - Primary, SEC - Secondary, DTR - Detour, BPS - Bypass
State : UP - Up, DN - Down, BU - Backup in Use, SU - Secondary in Use, FS - Forced to Secondary
* indicates the session is active with local repair at one or more nodes
(P) indicates the secondary-priority session is acting as primary
Ingress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 23.23.23.3 5001 2205 DTR TR-PE1-PE2-MP-01-Detour UP 00:38:07 1 2 SE - 52482
26.26.26.26 41.41.41.2 5001 2205 DTR TR-PE2-PE1-MP-01-Detour UP 00:39:00 1 2 SE - 25602
Total 2 displayed, Up 2, Down 0.
Transit RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 26.26.26.26 5001 2205 PRI TR-PE1-PE2-MP-01-Primary UP 02:18:05 1 1 SE 25600 25600
22.22.22.22 41.41.41.3 5001 2205 PRI TR-PE1-PE2-MP-01-Detour UP 00:37:28 1 2 SE 25602 52482
26.26.26.26 22.22.22.22 5001 2205 PRI TR-PE2-PE1-MP-01-Primary UP 02:18:00 1 1 SE 25601 52481
26.26.26.26 23.23.23.2 5001 2205 PRI TR-PE2-PE1-MP-01-Detour UP 00:38:53 1 2 SE 25603 25602
Total 4 displayed, Up 4, Down 0.
R3
#show rsvp session
Type : PRI - Primary, SEC - Secondary, DTR - Detour, BPS - Bypass
State : UP - Up, DN - Down, BU - Backup in Use, SU - Secondary in Use, FS - Forced to Secondary
* indicates the session is active with local repair at one or more nodes
(P) indicates the secondary-priority session is acting as primary
Ingress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 41.41.41.3 5001 2205 DTR TR-PE1-PE2-MP-01-Detour UP 00:37:31 1 1 SE - 25602
26.26.26.26 56.56.56.2 5001 2205 DTR TR-PE2-PE1-MP-01-Detour UP 00:39:23 1 2 SE - 25602
Total 2 displayed, Up 2, Down 0.
Transit RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 26.26.26.26 5001 2205 PRI TR-PE1-PE2-MP-01-Primary UP 02:18:08 1 1 SE 25600 25600
26.26.26.26 22.22.22.22 5001 2205 PRI TR-PE2-PE1-MP-01-Primary UP 02:18:02 1 1 SE 25601 25601
26.26.26.26 41.41.41.2 5001 2205 PRI TR-PE2-PE1-MP-01-Detour UP 00:39:03 1 2 SE 25602 25602
Total 3 displayed, Up 3, Down 0.
Below are the outputs from transit nodes R4 and R5 for Detour LSPs formation:
From R4
#show rsvp session
Type : PRI - Primary, SEC - Secondary, DTR - Detour, BPS - Bypass
State : UP - Up, DN - Down, BU - Backup in Use, SU - Secondary in Use, FS - Forced to Secondary
* indicates the session is active with local repair at one or more nodes
(P) indicates the secondary-priority session is acting as primary
Transit RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 58.58.58.2 5001 2205 PRI TR-PE1-PE2-MP-01-Detour UP 02:14:52 1 1 SE 25600 25601
26.26.26.26 62.62.62.2 5001 2205 PRI TR-PE2-PE1-MP-01-Detour UP 00:39:49 1 1 SE 25601 25601
Total 2 displayed, Up 2, Down 0.
From R5
#show rsvp session
Type : PRI - Primary, SEC - Secondary, DTR - Detour, BPS - Bypass
State : UP - Up, DN - Down, BU - Backup in Use, SU - Secondary in Use, FS - Forced to Secondary
* indicates the session is active with local repair at one or more nodes
(P) indicates the secondary-priority session is acting as primary
Transit RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 58.58.58.2 5001 2205 PRI TR-PE1-PE2-MP-01-Detour UP 00:39:45 1 1 SE 25600 25600
26.26.26.26 62.62.62.2 5001 2205 PRI TR-PE2-PE1-MP-01-Detour UP 02:14:48 1 1 SE 25601 25600
Total 2 displayed, Up 2, Down 0.
Now, shutting down one of the interfaces on Primary LSP path and check RSVP tunnel outputs on PE1 and PE2
Shutdown interface xe47 connected between R1 and R2:
|
#configure terminal |
Enter Configure mode. |
|
(config)#interface xe47 |
Enter interface mode. |
|
(config-router)#shutdown |
Administratively bring the interface down. |
|
(config-router)#exit |
Exit router RSVP mode |
Below is the validation output of RSVP LSPs from PE1 to PE2 after admin shutting one of the interfaces on primary LSP path:
#show rsvp session
Type : PRI - Primary, SEC - Secondary, DTR - Detour, BPS - Bypass
State : UP - Up, DN - Down, BU - Backup in Use, SU - Secondary in Use, FS - Forced to Secondary
* indicates the session is active with local repair at one or more nodes
(P) indicates the secondary-priority session is acting as primary
Ingress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 26.26.26.26 5001 2205 PRI TR-PE1-PE2-MP-01-Primary UP* 02:32:40 1 1 SE - 52480
22.22.22.22 26.26.26.26 5001 2201 PRI TR-PE1-PE2-MP-01-Primary DN N/A 0 0 SE - -
22.22.22.22 58.58.58.2 5001 2205 DTR TR-PE1-PE2-MP-01-Detour UP 00:54:12 1 2 SE - 25600
Total 3 displayed, Up 2, Down 1.
Transit RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 61.61.61.2 5001 2205 PRI TR-PE1-PE2-MP-01-Detour UP 00:53:27 1 2 SE 25602 25600
Total 1 displayed, Up 1, Down 0.
Below is the validation output of RSVP ping and trace from PE1 to PE2 after shutting one of the interfaces on primary LSP path:
Egress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
26.26.26.26 62.62.62.2 5001 2205 PRI TR-PE2-PE1-MP-01-Detour UP 02:29:16 1 1 SE 25600 -
Total 1 displayed, Up 1, Down 0.
#ping mpls rsvp egress 22.22.22.22 detail
Sending 5 MPLS Echos to 22.22.22.22, timeout is 5 seconds
Codes:
'!' - Success, 'Q' - request not sent, '.' - timeout,
'x' - Retcode 0, 'M' - Malformed Request, 'm' - Errored TLV,
'N' - LBL Mapping Err, 'D' - DS Mismatch,
'U' - Unknown Interface, 'R' - Transit (LBL Switched),
'B' - IP Forwarded, 'F' No FEC Found, 'f' - FEC Mismatch,
'P' - Protocol Error, 'X' - Unknown code,
'Z' - Reverse FEC Validation Failed
Type 'Ctrl+C' to abort
! seq_num = 1 62.62.62.2 0.69 ms
! seq_num = 2 62.62.62.2 0.54 ms
! seq_num = 3 62.62.62.2 0.56 ms
! seq_num = 4 62.62.62.2 0.49 ms
! seq_num = 5 62.62.62.2 0.51 ms
Success Rate is 100.00 percent (5/5)
round-trip min/avg/max = 0.49/0.59/0.69
#trace mpls rsvp egress 22.22.22.22 detail
Tracing MPLS Label Switched Path to 22.22.22.22, timeout is 5 seconds
Codes:
'!' - Success, 'Q' - request not sent, '.' - timeout,
'x' - Retcode 0, 'M' - Malformed Request, 'm' - Errored TLV,
'N' - LBL Mapping Err, 'D' - DS Mismatch,
'U' - Unknown Interface, 'R' - Transit (LBL Switched),
'B' - IP Forwarded, 'F' No FEC Found, 'f' - FEC Mismatch,
'P' - Protocol Error, 'X' - Unknown code,
'Z' - Reverse FEC Validation Failed
Type 'Ctrl+C' to abort
0 61.61.61.3 [Labels: 52480]
R 1 61.61.61.2 [Labels: 25602] 0.72 ms
R 2 61.61.61.3 [Labels: 25600] 0.67 ms
R 3 58.58.58.3 [Labels: 25600] 0.80 ms
R 4 54.54.54.3 [Labels: 25601] 0.80 ms
! 5 62.62.62.2 0.50 ms
Below is the validation output of RSVP LSPs from PE2 to PE1 after admin shutting one of the interfaces on primary LSP path:
#show rsvp session
Type : PRI - Primary, SEC - Secondary, DTR - Detour, BPS - Bypass
State : UP - Up, DN - Down, BU - Backup in Use, SU - Secondary in Use, FS - Forced to Secondary
* indicates the session is active with local repair at one or more nodes
(P) indicates the secondary-priority session is acting as primary
Ingress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
26.26.26.26 22.22.22.22 5001 2205 PRI TR-PE2-PE1-MP-01-Primary UP* 02:36:19 1 1 SE - 25601
26.26.26.26 22.22.22.22 5001 2201 PRI TR-PE2-PE1-MP-01-Primary DN N/A 0 0 SE - -
26.26.26.26 62.62.62.2 5001 2205 DTR TR-PE2-PE1-MP-01-Detour UP 00:57:57 1 2 SE - 25601
Total 3 displayed, Up 2, Down 1.
Transit RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
26.26.26.26 56.56.56.2 5001 2205 PRI TR-PE2-PE1-MP-01-Detour UP 00:57:40 1 2 SE 25602 25601
Total 1 displayed, Up 1, Down 0.
Egress RSVP:
To From Tun-ID LSP-ID Type LSPName State Uptime Rt Style Labelin Labelout
22.22.22.22 58.58.58.2 5001 2205 PRI TR-PE1-PE2-MP-01-Detour UP 02:33:00 1 1 SE 25601 -
Total 1 displayed, Up 1, Down 0.Below is the validation output of RSVP ping and trace from PE2 to PE1 after shutting one of the interfaces on primary LSP path:
#ping mpls rsvp egress 26.26.26.26 detail
Sending 5 MPLS Echos to 26.26.26.26, timeout is 5 seconds
Codes:
'!' - Success, 'Q' - request not sent, '.' - timeout,
'x' - Retcode 0, 'M' - Malformed Request, 'm' - Errored TLV,
'N' - LBL Mapping Err, 'D' - DS Mismatch,
'U' - Unknown Interface, 'R' - Transit (LBL Switched),
'B' - IP Forwarded, 'F' No FEC Found, 'f' - FEC Mismatch,
'P' - Protocol Error, 'X' - Unknown code,
'Z' - Reverse FEC Validation Failed
Type 'Ctrl+C' to abort
! seq_num = 1 58.58.58.2 0.80 ms
! seq_num = 2 58.58.58.2 0.59 ms
! seq_num = 3 58.58.58.2 0.47 ms
! seq_num = 4 58.58.58.2 0.49 ms
! seq_num = 5 58.58.58.2 0.54 ms
Success Rate is 100.00 percent (5/5)
round-trip min/avg/max = 0.47/0.63/0.80
#trace mpls rsvp egress 26.26.26.26 detail
Tracing MPLS Label Switched Path to 26.26.26.26, timeout is 5 seconds
Codes:
'!' - Success, 'Q' - request not sent, '.' - timeout,
'x' - Retcode 0, 'M' - Malformed Request, 'm' - Errored TLV,
'N' - LBL Mapping Err, 'D' - DS Mismatch,
'U' - Unknown Interface, 'R' - Transit (LBL Switched),
'B' - IP Forwarded, 'F' No FEC Found, 'f' - FEC Mismatch,
'P' - Protocol Error, 'X' - Unknown code,
'Z' - Reverse FEC Validation Failed
Type 'Ctrl+C' to abort
0 56.56.56.3 [Labels: 25601]
R 1 56.56.56.2 [Labels: 25601] 1.01 ms
R 2 41.41.41.2 [Labels: 25602] 0.95 ms
R 3 41.41.41.3 [Labels: 25602] 0.62 ms
R 4 56.56.56.3 [Labels: 25601] 0.79 ms
R 5 62.62.62.3 [Labels: 25601] 0.67 ms
R 6 54.54.54.4 [Labels: 25600] 0.57 ms
! 7 58.58.58.2 0.50 ms