Cisco 10000 - Manual (Page 123)

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Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 3 Configuring Remote Access to MPLS VPN
Monitoring and Maintaining an MPLS Configuration
To verify the connections between neighbors, enter any of the following commands in privileged EXEC
mode:
Caution Because debugging output is assigned high priority in the CPU process, it can render the system
unusable. For this reason, use debug commands only to troubleshoot specific problems or during
troubleshooting sessions with Cisco Systems technical support personnel. Moreover, it is best to use
debug commands during periods of lower network traffic and fewer users. Debugging during these
periods decreases the likelihood that increased debug command processing overhead will affect system
use.
Example 3-16 ping
Router# ping 10.10.10.6
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.6, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/60 ms
Example 3-17 ping vrf
Router# ping vrf vrf-1 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4/ ms
Verifying Label Distribution
To verify label distribution, enter any of the following commands in privileged EXEC mode:
Command Purpose
Router# ping [protocol | tag] {host-name |
system-address}
Verifies basic network connectivity between neighbors.
Router# ping vrf vrf-name system-address Verifies connectivity to the VRF specified.
Router# debug mpls packet Verifies that MPLS labels are set.
Command Purpose
Router# show mpls forwarding-table Displays the discovered neighbors. The Local Tag field displays
the label assigned by the router.
Router# show tag-switching tdp discovery Displays the status of the LDP discovery process.