(trās´rowt)
(n.) A
utility that traces a
packet from your computer to an
Internet host, showing how many
hops the packet requires to reach the host and how long each hop takes. If you're visiting a
Web site and
pages are appearing slowly, you can use traceroute to figure out where the longest delays are occurring.
The original traceroute is a UNIX utility, but nearly all platforms have something similar. Windows includes a traceroute utility called tracert. In Windows, you can run tracert by selecting Start->Run…, and then entering tracert followed by the domain name of the host. For example:
tracert www.pcwebopedia.com
Traceroute utilities work by sending packets with low time-to-live (TTL) fields. The TTL value specifies how many hops the packet is allowed before it is returned. When a packet can't reach its destination because the TTL value is too low, the last host returns the packet and identifies itself. By sending a series of packets and incrementing the TTL value with each successive packet, traceroute finds out who all the intermediary hosts are.
