Reference Guide

System Management 369
The following table describes significant fields shown above.
The following table describes characters that may appear in the traceroute command output.
telnet
The telnet User EXEC mode command enables logging on to a host that supports Telnet.
Syntax
telnet {ip-address | hostname} [port] [keyword1......]
• ip-address — IP address of the destination host.
•
hostname — Host name of the destination host. (Range: 1-158 characters)
•
port — A decimal TCP port number, or one of the keywords listed in the Ports table in the
User Guidelines.
•
keyword — One or more keywords listed in the Keywords table in the User Guidelines.
Field Description
1 Indicates the sequence number of the device in the path
to the host.
i2-gateway.stanford.edu Host name of this device.
192.68.191.83 IP address of this device.
1 msec 1 msec 1 msec Round-trip time for each probe sent.
Field Description
* The probe timed out.
? Unknown packet type.
A Administratively unreachable. Usually, this output indicates that an access list is
blocking traffic.
F Fragmentation is required and DF is set.
H Host unreachable.
N Network unreachable.
P Protocol unreachable.
Q Source quench.
R Fragment reassembly time exceeded.
S Source route failed.
U Port unreachable.