Cisco 3845 - Security Bundle Router Software Manual page 803
Software configuration guide
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Chapter 34
Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS
Beginning in privileged EXEC mode, follow these steps to enable MPLS traffic engineering fast reroute
on an MPLS tunnel and to create a backup tunnel to the next hop or next-next hop:
Command
Step 1
configure terminal
Step 2
interface tunnel tunnel-number
Step 3
ip unnumbered interface-id
Step 4
tunnel destination A.B.C.D
Step 5
tunnel mode mpls traffic-eng
Step 6
tunnel mpls traffic-eng path-option number
{dynamic | explicit {name path-name |
path-number}} [lockdown]
Step 7
Step 8
ip explicit-path name path-name
Step 9
next-address A.B.C.E
Step 10
Step 11
end
Step 12
show ip explicit-paths
Step 13
copy running-config startup-config
Enter the no tunnel mode mpls traffic-eng global configuration command to disable MPLS traffic
engineering or the no ip explicit-path global configuration command to remove the IP explicit path
configuration.
OL-23400-01
Configuring MPLS Traffic Engineering and Fast Reroute
Purpose
Enter global configuration mode.
Create a tunnel interface, and enter interface configuration mode for
the tunnel interface.
Configure the tunnel source address. This is usually the IP address
of the loopback0 interface. The command is not effective until
loopback0 is configured with an IP address.
Specify the IP address of the device where the tunnel terminates.
This should be the router ID of the next-hop or next-next hop of the
LSP to be protected.
Set the mode of a tunnel to MPLS for traffic engineering.
Configure a path option for an MPLS TE tunnel. Keywords have
these meanings:
number—When multiple paths are configured, lower-numbered
•
options are preferred.
•
dynamic—Specify that the LSP path is dynamically calculated.
•
explicit—Specify that the LSP path is an explicit IP path.
name path-name—Path name of the IP explicit path that the
•
tunnel uses with this option.
•
name path-number—Path number of the IP explicit path that the
tunnel uses with this option.
•
(Optional) lockdown—Specify that the LSP cannot be
reoptimized.
Specify the path of the tunnel, and enter IP explicit path command
mode to set up or modify the explicit path. An IP explicit path is a
list of IP addresses, each representing a node or link in the explicit
path.
Specify the next IP address in the explicit path.
Repeat Step 8 for additional IP addresses in the path.
Return to privileged EXEC mode.
Verify the configuration.
(Optional) Save your entries in the configuration file.
Cisco ME 3800X and 3600X Switch Software Configuration Guide
34-23
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