Enabling Mpls - Cisco 3845 - Security Bundle Router Software Manual

Configuring MPLS VPNs
Note Some MPLS features require specific software licenses.

Enabling MPLS

To use MPLS in a network, such as the one shown in
explicitly configured on the provider-edge routers.
Beginning in privileged EXEC mode, follow these steps to incrementally deploy MPLS through a
network, assuming that packets to all destination prefixes should be label-switched:
Command
Step 1
configure terminal
Step 2 ip routing
Step 3 mpls label protocol ldp
Step 4 interface Loopback0
Step 5
ip address ip address
Step 6
mpls ldp router-id loopback 0 force
Step 7
interface interface-id
Step 8
ip address ip address
Step 9 mpls ip
Step 10
end
Step 11
show mpls forwarding-table
Step 12
show mpls interfaces
Step 13
show mpls ldp neighbor
Step 14
show mpls ldp discovery
Step 15
copy running-config startup-config
Repeat these steps for every PE router in the network and the appropriate interfaces until all routers and
connected interfaces are enabled for MPLS.
Use the no mpls ip global configuration command to disable MPLS on the switch. Use the no mpls label
protocol ldp global configuration command to disable LDP.
Cisco ME 3800X and 3600X Switch Software Configuration Guide
34-8
Chapter 34
Figure
Purpose
Enter global configuration mode.
Enable IP routing on the switch if it is disabled.
Set the label protocol on the switch to LDP. The default protocol is TDP.
Enter interface configuration mode for a loopback interface.
The loopback must be /32.
Note
Assign an IP address to the loopback interface.
The subnet mask value has to be a host mask, /32.
Specify the interface to force the loopback.
Enter interface configuration mode, and specify the Layer 3 interface
connected to the MPLS network. Valid interfaces include
10GigabitEthernet1/1/1, GigabitEthernet1/1/2, and VLANs.
Assign an IP address to the Layer 3 interface connected to the MPLS
network.
Enable MPLS forwarding of IPv4 packets along normally routed paths for
the interface.
Return to privileged EXEC mode.
Verify the configuration.
Verify the configuration.
Verify the configuration.
(Optional) Save your entries in the configuration file.
Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS
34-1, MPLS must be globally enabled and
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