HP HSR6800 Configuration Manual page 121

1.1.1.9:6
1.1.1.9:2054
# Execute the display mpls te tunnel path command on Router A to identify the paths that the
two tunnels traverse:
[RouterA] display mpls te tunnel path
Tunnel Interface Name : Tunnel3
Lsp ID : 1.1.1.9 :6
Hop Information
Hop 0 10.1.1.1
Hop 1 10.1.1.2
Hop 2 2.2.2.9
Hop 3 20.1.1.1
Hop 4 20.1.1.2
Hop 5 3.3.3.9
Tunnel Interface Name : Tunnel3
Lsp ID : 1.1.1.9 :2054
Hop Information
Hop 0 30.1.1.1
Hop 1 30.1.1.2
Hop 2 4.4.4.9
Hop 3 40.1.1.1
Hop 4 40.1.1.2
Hop 5 3.3.3.9
# Execute the tracert command to draw the picture of the path that a packet must travel to
reach the tunnel destination.
[RouterA] tracert –a 1.1.1.9 3.3.3.9
traceroute to
1 10.1.1.2 25 ms 30.1.1.2 25 ms 10.1.1.2 25 ms
2 40.1.1.2 45 ms 20.1.1.2 29 ms 40.1.1.2 54 ms
The output shows that the current LSP traverses Route B but not Router D.
# Shut down interface GigabitEthernet 2/1/2 on Router B. Execute the tracert command on
Router A to draw the path to the tunnel destination. The output shows that the LSP is re-routed
to traverse Router D:
[RouterA] tracert –a 1.1.1.9 3.3.3.9
traceroute to
1 30.1.1.2 28 ms
2 40.1.1.2 50 ms
# Execute the display mpls te tunnel command on Router A. You can see that only the tunnel
traversing Router D is present:
[RouterA] display mpls te tunnel
LSP-Id
1.1.1.9:2054
Configuring ordinary CR-LSP backup is almost the same as configuring hot CR-LSP backup
except that you need to replace the mpls te backup hot-standby command with the mpls te
backup ordinary command. Unlike in hot CR-LSP backup where a secondary tunnel is
created immediately upon creation of a primary tunnel, in ordinary CR-LSP backup, a
secondary CR-LSP is created only after the primary LSP goes down.
6. Create a static route to direct traffic to the MPLS TE tunnel:
[RouterA] ip route-static 20.1.1.2 24 tunnel 3 preference 1
3.3.3.9 -/GE2/1/1
3.3.3.9 -/POS5/1/1
3.3.3.9(3.3.3.9) 30 hops max,40 bytes packet
3.3.3.9(3.3.3.9) 30 hops max,40 bytes packet
27 ms 23 ms
50 ms 49 ms
Destination In/Out-If
3.3.3.9 -/POS5/1/1
113
Tunnel3
Tunnel3
Name
Tunnel3