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Command or Action Purpose
Step 5
interface type number
Example:
Router(config)# interface atm2/0
Specifies the interface to be configured and enters interface
configuration mode.
Step 6
mpls ip
Example:
Router(config-if)# mpls ip
Configures MPLS hop-by-hop forwarding on the interface.
• You must enable MPLS forwarding on the interfaces as well
as for the router.
Step 7
exit
Example:
Router(config-if)# exit
Exits interface configuration mode and enters global
configuration mode.
Step 8
mpls ldp explicit-null [for prefix-acl | to peer-acl |
for prefix-acl to peer-acl]
Example:
Router(config)# mpls ldp explicit-null
Advertises an Explicit Null label in situations where it would
normally advertise an Implicit Null label.
Step 9
exit
Example:
Router(config)# exit
Exits global configuration mode and enter privileged EXEC
mode.
Step 10
show mpls forwarding-table [network {mask |
length} | labels label [- label] | interface interface |
next-hop address | lsp-tunnel[tunnel-id]] [vrf vpn-
name] [detail]
Example:
Router# show mpls forwarding-table
Verifies that MPLS packets are forwarded with an explicit-null
label (value of 0).
MPLS Label Distribution Protocol (LDP)
How to Configure MPLS LDP
MPLS LDP Configuration Guide, Cisco IOS Release 12.4
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