Traceroute Rules

Baseline traceroute information is collected from your network unless one or more of the following scenarios is true:

Key phones are not defined for your Locations. To enable traceroutes to Locations, an administrator must define key phones when adding or editing Location definitions.
Key phones have not sent or received call traffic. The investigation fails when you launch a traceroute investigation to a Location whose key phone did not send or receive call traffic. An error message indicates that traceroutes are initiated only when collectors are found for a Location. The collector must observe the key phone in collected traffic before it can run a traceroute to it. As a work-around, select Device as the Target Type and enter the IP address of the key phone.
Routine traceroutes are disabled for voice gateways. The “Perform routine traceroutes for baseline” parameter is enabled by default for all Cisco voice gateways. An administrator can disable it.