Trace Route

Trace Route is a diagnostic utility to assist in diagnosing and troubleshooting router connections on the Internet. By using Internet Connect Message Protocol (ICMP) echo packets similar to Ping packets, Trace Route can test interconnectivity with routers and other hosts that are farther and farther along the network path until the connection fails or until the remote host responds.

1
Select Trace Route from the Diagnostic Tool menu.
2
Type the IP address or domain name of the destination host in the TraceRoute this host or IP address field.
3
In the Interface drop-down menu, select which interface you want to test the trace route from. Selecting ANY allows the appliance to choose among all interfaces—including those not listed in the drop-down menu.
4
Click Go.

A second window is displayed with each hop to the destination host. By following the route, you can diagnose where the connection fails between the firewall and the destination.

TraceRoute for IPv6

For complete information on the SonicOS implementation of IPv6, see IPv6 .

The TraceRoute tool includes a new Prefer IPv6 networking option.

When testing interconnectivity with routers and other hosts, it uses the first IP address that is returned and shows the actual TraceRoute address. If both an IPv4 and IPv6 address are returned, by default, the firewall will TraceRoute the IPv4 address.

If the Prefer IPv6 networking option is enabled, the firewall will TraceRoute the IPv6 address.