Troubleshooting guide

8-34
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 8 Troubleshooting Tag and MPLS Switching Connections
Troubleshooting MPLS ATM Connections
Step 2 Enter the debug mpls packet command or the MPLS-aware traceroute vrf command to verify the
MPLS labels are set.
8540-PE2# traceroute vrf Red 222.2.2.1
Type escape sequence to abort.
Tracing the route to 222.2.2.1
1 111.0.1.17 4 msec 0 msec 4 msec
2 111.0.1.101 0 msec 0 msec 0 msec
3 111.0.1.102 4 msec * 0 msec
8540-PE2#
Step 3 Verify that the interfaces that appear in the traceroute command output displays the correct
cross-connect addresses. This traceroute vrf command example shows verification of the connections,
shown in Figure 8-5.
Troubleshooting MPLS ATM Connections
This section provides steps used to troubleshoot and verify MPLS over ATM routing and interface
connections.
Troubleshooting MPLS VPN ATM Example
Figure 8-6 shows customer VPN connections over ATM MPLS backbone connections, and is used in the
following examples of troubleshooting MPLS VPN ATM network connections.
Figure 8-6 ATM Switch Router ATM MPLS VPN Example Network
68593
VPN 1
75k-CE1
VPN 1
75k-CE2
ATM 1/0/0
2.0.0.2/8
Gig 2/0
11.1.0.0.1/8
Gig 2/0/1
1 1.0.0.2/8
8540-ATM-PE1
lo0 - 102.0.0.2/32
ATM 1/0/0
2.0.0.1/8
lo0 - 101.0.0.1/32
8540-ATM-PE2
lo0 - 104.0.0.4/32
ATM 1/0/1
3.0.0.1/8
8540-ATM-P
lo0 - 100.0.0.2/32
ATM 1/0/1
3.0.0.2/8
Gig 2/0/1
14.0.0.1/8
lo0 - 105.0.0.5/32
Gig 5/0
14.0.0.28/8