424 CHAPTER 30: SYSTEM MANAGEMENT COMMANDS
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......]
Parameters
■ 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.
Default Configuration
The default port is the Telnet port (decimal23) on the host.
Command Mode
User EXEC mode
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.
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