143
Record Route : Enabled Record Label : Enabled
FRR Flag : Enabled Bandwidth Protection : Disabled
Backup Bandwidth Flag: Disabled Backup Bandwidth Type: -
Backup Bandwidth : -
Bypass Tunnel : No Auto Created : No
Route Pinning : Disabled
Retry Limit : 10 Retry Interval : 2 sec
Reoptimization : Disabled Reoptimization Freq : -
Backup Type : None Backup LSP ID : -
Auto Bandwidth : Disabled Auto Bandwidth Freq : -
Min Bandwidth : - Max Bandwidth : -
Collected Bandwidth : -
5.
Configure a bypass tunnel on Router B (the PLR):
# Configure an explicit path for the bypass tunnel.
[RouterB] explicit-path by-path
[RouterB-explicit-path-by-path] nexthop 3.2.1.2
[RouterB-explicit-path-by-path] nexthop 3.3.1.2
[RouterB-explicit-path-by-path] nexthop 3.3.3.3
[RouterB-explicit-path-by-path] quit
# Create MPLS TE tunnel interface Tunnel 5 for the bypass tunnel.
[RouterB] interface tunnel 5 mode mpls-te
[RouterB-Tunnel5] ip address 11.1.1.1 255.255.255.0
# Specify the tunnel destination address as LSR ID of Router C.
[RouterB-Tunnel5] destination 3.3.3.3
# Specify the tunnel signaling protocol as RSVP-TE.
[RouterB-Tunnel5] mpls te signaling rsvp-te
# Specify the explicit path to be used as
by-path
.
[RouterB-Tunnel5] mpls te path preference 1 explicit-path by-path
# Set the bandwidth that the bypass tunnel can protect.
[RouterB-Tunnel5] mpls te backup bandwidth un-limited
[RouterB-Tunnel5] quit
# Bind the bypass tunnel to the protected interface.
[RouterB] interface gigabitethernet 1/1/2
[RouterB-GigabitEthernet1/1/2] mpls te fast-reroute bypass-tunnel tunnel 5
[RouterB-GigabitEthernet1/1/2] quit
# Execute the
display interface tunnel
command on Router B. The output shows that the
tunnel interface Tunnel 5 is up. (Details not shown.)
6.
Configure a static route on Router A to direct the traffic destined for subnet 100.1.2.0/24 to
MPLS TE tunnel 4.
[RouterA] ip route-static 100.1.2.0 24 tunnel 4 preference 1
Verifying the configuration
# Display LSP entries on each router to verify that Router B and Router C each have two CRLSPs
and the bypass tunnel backs up the primary CRLSP.
[RouterA] display mpls lsp
FEC Proto In/Out Label Interface/Out NHLFE
1.1.1.1/4/48960 RSVP -/1245 GE1/1/1
2.1.1.2 Local -/- GE1/1/1