Verifying Traffic Forwarding over the LDP-Signaled LSP

Purpose

Verify that traffic between Hosts C1 and C2 is forwarded over the LDP-signaled LSP between Services Router R6 and Services Router R7. Because traffic uses any configured gateway address by default, you must explicitly specify that the gateway address is to be bypassed.

Action

If Host C1 is a Juniper Networks router, from the CLI enter the traceroute 220.220.0.0 source 200.200.0.1 bypass-routing gateway 172.16.0.1 command.

traceroute to 220.220.0.1 (172.16.0.1) from 200.200.0.1, 30 hops max, 40 byte packets
 1  172.16.0.1 (172.16.0.1)  0.661 ms  0.538 ms  0.449 ms
 2  10.0.8.9 (10.0.8.9)  0.511 ms  0.479 ms  0.468 ms
    MPLS Label=100004 CoS=0 TTL=1 S=1
 3  10.0.8.5 (10.0.8.5)  0.476 ms  0.512 ms  0.441 ms
 4  220.220.0.1 (220.220.0.1)  0.436 ms  0.420 ms  0.416 ms

What it Means

The output shows the route that traffic travels between Hosts C1 and C2, without using the default gateway. Verify that traffic sent from C1 to C2 travels through Router R7. The 10.0.8.9 address is the interface address for Router R5.

Related Topics

For information about the traceroute command and its output. see the JUNOS System Basics and Services Command Reference.