This command outputs information for each (router) hop between the switch and the destination address. Note that every time you execute traceroute, it uses the same default settings unless you specify otherwise for that instance of the command.
Syntax:
traceroute[ip-address|hostname] [maxttl 1-255] [minttl 1-255] [probes 1-5] [source[ip-address|source-vlan vid|loopback 0-7]] [dstport 1-34000] [srcport 1-34000] [ip-option[record-route|loose-source-route|strict-source-route|include-timestamp|include-timestamp-and-address|include timestamp-from]] [timeout 1-120]
Lists the IP address or hostname of each hop in the route, plus the time in microseconds for the traceroute packet reply to the switch for each hop.
Executing traceroute with its default values for a destination IP address that is four hops away produces a result similar to this:
Continuing from the previous example (A completed traceroute enquiry), executing traceroute with an insufficient maxttl for the actual hop count produces an output similar to this:
Common reasons for traceroute failing to reach a destination include:
Executing traceroute where the route becomes blocked or otherwise fails results in an output marked by timeouts for all probes beyond the last detected hop. For example, with a maximum hop count of 7 (maxttl = 7), where the route becomes blocked or otherwise fails, the output appears similar to this:
