The l2 traceroute command is a proprietary command that allows you to trigger an LTM message.
For B-VLANs, specify either the destination MAC address or node name.
Note
The virtual node MAC address does not support CFM Layer 2 traceroute.
This command provides a simpler command syntax than the standard LTM commands, which require you to specify the MD, MA, and MEP ID information. The l2 traceroute command provides a trace equivalent at Layer 2 for use with nodes on the SPBM B-VLAN in the customer domain.
You can use CFM to troubleshoot networks and hosts that support the CFM protocol. After you configure CFM, CFM works in the network whether or not SPBM is in use.
You cannot use CFM to troubleshoot networks and hosts that do not support the CFM protocol, such as a customer domain that does not support CFM. Only devices that support the CFM protocol respond to l2 ping and l2 traceroute requests.
You can specify an IP address as the destination address for the l2 traceroute command.
The l2 traceroute command converts Layer 3 IP information to an appropriate Layer 2 VLAN and MAC combination. The system can also target IP addresses that are not SPBM derived routes.
If you enable ECMP, l2 traceroute runs internally for each of the VLAN paths returned, and displays a summary of the results. If you disable ECMP, the results display only one path.
Note
If you use the l2 traceroute ip-address command on a DvR Leaf node, the output only shows DvR Controller IP addresses if the IP address or host route specified is unknown in the DvR domain.