Protocol [ip]: Prompts for a supported protocol. Enter appletalk, clns, ip, novell, apollo, vines, decnet, or xns. Default: ip. Target IP address: You must enter a host name or an IP address. There is no default. Source address: The interface or IP address of the router to use as a source address for the probes. The router normally picks the IP address of the outbound interface to use. Numeric display [n]: The default is to have both a symbolic and numeric display; however, you can suppress the symbolic display. Timeout in seconds : The number of seconds to wait for a response to a probe packet. The default is 3 seconds. Probe count : The number of probes to be sent at each TTL level. The default count is 3. Minimum Time to Live : The TTL value for the first probes. The default is 1, but it can be set to a higher value to suppress the display of known hops. Maximum Time to Live : The largest TTL value that can be used. The default is 30. The traceroute command terminates when the destination is reached or when this value is reached. Port Number : The destination port used by the UDP probe messages. The default is 33434. Loose, Strict, Record, Timestamp, Verbose[none]: IP header options. You can specify any combination. The traceroute command issues prompts for the required fields. Note that the traceroute command will place the requested options in each probe; however, there is no guarantee that all routers (or end nodes) will process the options.
The purpose behind the traceroute command is to record the source of each ICMP "time exceeded" message to provide a trace of the path the packet took to reach the destination.
The following is sample output from the traceroute command:Router#traceroute Protocol [ip]: Target IP address: 192.168.40.2 !--- The address to which the path is being traced. Source address: 172.16.23.2 Numeric display [n]: Timeout in seconds : Probe count : Minimum Time to Live : Maximum Time to Live : Port Number : Loose, Strict, Record, Timestamp, Verbose[none]: Type escape sequence to abort. Tracing the route to 192.168.40.2 1 172.31.20.2 16 msec 16 msec 16 msec 2 172.20.10.2 28 msec 28 msec 32 msec 3 192.168.40.2 32 msec 28 msec * !--- Traceroute is successful.
© Cisco Systems, Inc. 2001, 2002
World Wide Education
|Converted from CHM to HTML with chm2web Pro 2.85 (unicode)|