Troubleshooting guide

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ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 8 Troubleshooting Tag and MPLS Switching Connections
Troubleshooting MPLS ATM Connections
Note If you are checking a provider edge ATM switch router, you must add the specific VRF name.
Step 1 Enter the ping command to verify that the connection is up between the provider-edge ATM switch
routers and the customer-edge routers.
8540-ATM-PE2# ping vrf 1 101.0.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 101.0.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
8540-ATM-PE2#
This ping command example shows verification of the connections, shown in Figure 8-6.
Step 2 Enter the traceroute vrf command to verify the MPLS labels are set.
8540-ATM-PE2# traceroute vrf R1 101.0.0.1
Type escape sequence to abort.
Tracing the route to 101.0.0.1
1 2.0.0.2 4 msec 0 msec 4 msec
2 11.0.0.2 0 msec 0 msec 0 msec
3 11.1.0.0 4 msec * 0 msec
8540-ATM-PE2#
Step 3 Verify that the interfaces that appear in the traceroute command output display are the correct
cross-connect addresses. This traceroute vrf command example shows verification of the connections
shown in Figure 8-6.