Verifying the routing protocol is running, Verifying mpls, Verifying connections between neighbors – Cisco 10000 User Manual
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Cisco 10000 Series Router Software Configuration Guide
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Chapter 3 Configuring Remote Access to MPLS VPN
Monitoring and Maintaining an MPLS Configuration
Verifying the Routing Protocol Is Running
To verify that the routing protocol is running, enter any of the following commands in privileged EXEC
mode:
Verifying MPLS
To verify MPLS, enter the following command in privileged EXEC mode:
Example 3-15 show mpls interfaces
Router# show mpls interfaces
InterfaceIPTunnelOperational
(...)
Serial0/1.1Yes (tdp)YesYes
Serial0/1.2YesYesNo
Serial0/1.3Yes (tdp)YesYes
(...)
The fields in this example indicate the following:
•
IP field—Indicates that MPLS IP is configured for an interface. The label distribution protocol
(LDP) appears in parentheses to the right of the IP status. The LDP is either Tag Distribution
Protocol (TDP) as defined in the Cisco Tag Switching architecture, or LDP as defined by IETF in
RFC 3036.
•
Tunnel field—Indicates the capacity of traffic engineering on the interface.
•
Operational field—Indicates the status of the LDP. In the above example, the Operational field
indicates down on Serial 0/1.2 because the interface is down.
Verifying Connections Between Neighbors
An unlabeled connection must exist between each pair of neighboring routers. The routing protocol and
the label distribution protocol use the unlabeled connection to build the outing table and the Label
Forwarding Information Base (LFIB).
Command
Purpose
Router# show ip protocols
Displays the parameters and current state of the active routing protocol
process. Ensure that the protocol routes for the MPLS network and all
neighbors are present.
Router# show ip route
Displays the current state of the routing table. Ensure that all routers
and routes are present.
Command
Purpose
Router# show mpls interfaces
Displays information about the interfaces that have been
configured for label switching. Use this command to verify that
MPLS is globally enabled and that a label distribution protocol is
running on the requested interfaces.