The
show mpls traffic-eng tunnels command shows information about the primary (protected) path. The following sample output shows that path protection has been configured.
Router# show mpls traffic-eng tunnels tunnel500
Name: R1_t500 (Tunnel500) Destination: 10.0.0.9
Status:
Admin: up Oper: up Path: valid Signalling: connected
path option 10, type explicit path344 (Basis for Setup, path weight 20)
path option 20, type explicit path345
Path Protection: 0 Common Link(s), 0 Common Node(s)
path protect option 10, type explicit path3441 (Basis for Protect, path weight 20)
path protect option 20, type explicit path348
Config Parameters:
Bandwidth: 100 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
AutoRoute: enabled LockDown: disabled Loadshare: 100 bw-based
auto-bw: disabled
Active Path Option Parameters:
State: explicit path option 10 is active
BandwidthOverride: disabled LockDown: disabled Verbatim: disabled
InLabel : -
OutLabel : FastEthernet1/0/0, 16
RSVP Signalling Info:
Src 10.1.1.1, Dst 10.0.0.9, Tun_Id 500, Tun_Instance 43
RSVP Path Info:
My Address: 10.2.0.1
Explicit Route: 10.2.0.2 10.10.0.1 10.10.0.2 10.0.0.9
Record Route: NONE
Tspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
RSVP Resv Info:
Record Route: NONE
Fspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
Shortest Unconstrained Path Info:
Path Weight: 20 (TE)
Explicit Route: 10.0.0.1 10.0.0.2 10.0.1.1 10.0.1.2
10.0.0.9
History:
Tunnel:
Time since created: 18 minutes, 22 seconds
Time since path change: 19 seconds
Number of LSP IDs (Tun_Instances) used: 43
Current LSP:
Uptime: 22 seconds
Selection: reoptimization
Prior LSP:
ID: path option 10 [27]
Removal Trigger: reoptimization completed
The following
show mpls traffic-eng tunnels command output shows information about the secondary path. Tunnel500 is protected. The protection path is used, and the primary path is down. The command output shows the IP explicit paths of the primary LSP and the secondary LSP.
Router# show mpls traffic-eng tunnels tunnel500 protection
R1_t500
LSP Head, Tunnel500, Admin: up, Oper: up
Src 10.1.1.1, Dest 10.0.0.9, Instance 43
Fast Reroute Protection: None
Path Protection: 0 Common Link(s), 0 Common Node(s)
Primary lsp path:10.2.0.1 10.2.0.2
10.10.0.1 10.10.0.2
10.0.0.9
Protect lsp path:10.0.0.1 10.0.0.2
10.0.1.1 10.0.1.2
10.0.0.9
Path Protect Parameters:
Bandwidth: 100 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
InLabel : -
OutLabel : FastEthernet0/0/0, 17
RSVP Signalling Info:
Src 10.1.1.1, Dst 10.0.0.9, Tun_Id 500, Tun_Instance 44
RSVP Path Info:
My Address: 10.0.0.1
Explicit Route: 10.0.0.2 10.0.1.1 10.0.1.2 10.0.0.9
Record Route: NONE
Tspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
RSVP Resv Info:
Record Route: NONE
Fspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
R1#
The following
shutdowncommand shuts down the interface to use path protection:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface fastethernet1/0/0
Router(config-if)# shutdown
Router(config-if)# end
Router#
The following
show mpls traffic-eng tunnels command shows that the protection path is used, and the primary path is down:
Router# show mpls traffic-eng tunnels tunnel500
Name: R1_t500 (Tunnel500) Destination: 10.0.0.9
Status:
Admin: up Oper: up Path: valid Signalling: connected
path protect option 10, type explicit path3441 (Basis for Protect, path weight 20)
path option 10, type explicit path344
path option 20, type explicit path345
Path Protection: Backup lsp in use.
path protect option 10, type explicit path3441 (Basis for Protect, path weight 20)
path protect option 20, type explicit path348
Config Parameters:
Bandwidth: 100 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
AutoRoute: enabled LockDown: disabled Loadshare: 100 bw-based
auto-bw: disabled
Active Path Option Parameters:
State: explicit path option 10 is active
BandwidthOverride: disabled LockDown: disabled Verbatim: disabled
InLabel : -
OutLabel : FastEthernet0/0/0, 17
RSVP Signalling Info:
Src 10.1.1.1, Dst 10.0.0.9, Tun_Id 500, Tun_Instance 44
RSVP Path Info:
My Address: 10.0.0.1
Explicit Route: 10.0.0.2 10.0.1.1 10.0.1.2 10.0.0.9
Record Route: NONE
Tspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
RSVP Resv Info:
Record Route: NONE
Fspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
Shortest Unconstrained Path Info:
Path Weight: 20 (TE)
Explicit Route: 10.0.0.1 10.0.0.2 10.0.1.1 10.0.1.2 10.0.0.9
History:
Tunnel:
Time since created: 23 minutes, 28 seconds
Time since path change: 50 seconds
Number of LSP IDs (Tun_Instances) used: 44
Current LSP:
Uptime: 5 minutes, 24 seconds
Selection:
Prior LSP:
ID: path option 10 [43]
Removal Trigger: path error
Last Error: PCALC:: Explicit path has unknown address, 10.2.0.1
R1#
The "up" value in the Oper field of the
show mpls traffic-eng tunnels protection command shows that protection is enabled:
Router# show mpls traffic-eng tunnels tunnel500 protection
R1_t500
LSP Head, Tunnel500, Admin: up, Oper: up
Src 10.1.1.1, Dest 10.0.0.9, Instance 44
Fast Reroute Protection: None
Path Protection: Backup lsp in use.
R1#
The
no shutdown command in the following command sequence causes the interface to be up again and activates the primary path:
Router> enable
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface fastethernet1/0/0
Router(config-if)# no shutdown
Router(config-if)# end
The following command output shows that path protection has been reestablished and the primary path is being used:
Router# show mpls traffic-eng tunnels tunnel500
Name: R1_t500 (Tunnel500) Destination: 10.0.0.9
Status:
Admin: up Oper: up Path: valid Signalling: connected
path option 10, type explicit path344 (Basis for Setup, path weight 20)
path option 20, type explicit path345
Path Protection: 0 Common Link(s), 0 Common Node(s)
path protect option 10, type explicit path3441 (Basis for Protect, path weight 20)
path protect option 20, type explicit path348
Config Parameters:
Bandwidth: 100 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
AutoRoute: enabled LockDown: disabled Loadshare: 100 bw-based
auto-bw: disabled
Active Path Option Parameters:
State: explicit path option 10 is active
BandwidthOverride: disabled LockDown: disabled Verbatim: disabled
InLabel : -
OutLabel : FastEthernet1/0/0, 16
RSVP Signalling Info:
Src 10.1.1.1, Dst 10.0.0.9, Tun_Id 500, Tun_Instance 52
RSVP Path Info:
My Address: 10.2.0.1
Explicit Route: 10.2.0.2 10.10.0.1 10.10.0.2 10.0.0.9
Record Route: NONE
Tspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
RSVP Resv Info:
Record Route: NONE
Fspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
Shortest Unconstrained Path Info:
Path Weight: 20 (TE)
Explicit Route: 10.0.0.1 10.0.0.2 10.0.1.1 10.0.1.2 10.0.0.9
History:
Tunnel:
Time since created: 25 minutes, 26 seconds
Time since path change: 23 seconds
Number of LSP IDs (Tun_Instances) used: 52
Current LSP:
Uptime: 26 seconds
Selection: reoptimization
Prior LSP:
ID: path option 10 [44]
Removal Trigger: reoptimization completed
R1#
Following is sample
show mpls traffic-eng tunnels command output. Tunnel500 is protected. After a failure, the primary LSP is protected.
Router# show mpls traffic-eng tunnels tunnel500 protection
R1_t500
LSP Head, Tunnel500, Admin: up, Oper: up
Src 10.1.1.1, Dest 10.0.0.9, Instance 52
Fast Reroute Protection: None
Path Protection: 0 Common Link(s), 0 Common Node(s)
Primary lsp path:10.2.0.1 10.2.0.2
10.10.0.1 10.10.0.2
10.0.0.9
Protect lsp path:10.0.0.1 10.0.2
10.0.1.1 10.0.1.2
10.0.0.9
Path Protect Parameters:
Bandwidth: 100 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
InLabel : -
OutLabel : FastEthernet0/0/0, 16
RSVP Signalling Info:
Src 10.1.1.1, Dst 10.0.0.9, Tun_Id 500, Tun_Instance 53
RSVP Path Info:
My Address: 10.0.0.1
Explicit Route: 10.0.0.2 10.0.1.1 10.0.1.2 10.0.0.9
Record Route: NONE
Tspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
RSVP Resv Info:
Record Route: NONE
Fspec: ave rate=100 kbits, burst=1000 bytes, peak rate=100 kbits
R1#