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Monitoring and Maintaining the MPLS VPN
Verifying the PE to CE Routing Protocol
If the CE router uses a routing protocol other than BGP (for example, RIP or OSPF), enter any of the
following commands in privileged EXEC mode to verify the PE to CE routing sessions:
Command
Router# show ip rip database vrf vrf-name
Router# show ip ospf [process-id [area-id]]
database
The show ip rip database vrf and show ip ospf commands are useful for verifying the routing table
Note
from the CE router side of the connection and for determining if neighbors are missing from the routing
table.
Verifying the MPLS VPN Labels
An MPLS VPN uses a transport label to identify the VRF and another label to identify the backbone. To
verify the MPLS VPN labels, enter any of the following commands in privileged EXEC mode:
Command
Router# traceroute vrf vrf-name ip-address
Router# show ip bgp vpnv4 all tags
The traceroute vrf command works with an MPLS-aware traceroute, and only if the backbone
Note
ATM switch routers are configured to propagate and generate IP Time to Live (TTL) information.
Example 3-26 traceroute vrf Command
Router# traceroute vrf vrf-1 192.168.1.1
Type escape sequence to abort.
Tracing the route to 192.168.1.1
Testing the VRF
To test the VRF to ensure that it is working properly, enter any of the following commands in privileged
EXEC mode:
Cisco 10000 Series Router Software Configuration Guide
3-46
1 10.0.1.17 4 msec 0 msec 4 msec
2 10.0.1.101 0 msec 0 msec 0 msec
3 10.0.1.102 4 msec * 0 msec
Chapter 3
Purpose
Displays summary address entries in the Routing Information
Protocol (RIP) routing database for the specified VRF.
Displays lists of information related to the OSPF database for a
specific router.
Purpose
Displays the transport addresses for the specified VRF. Ensure that
the interfaces displayed are the correct cross-connect addresses.
Displays the labels for a particular VRF.
Configuring Remote Access to MPLS VPN
OL-2226-23
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Troubleshooting
