Telnet Commands

This section describes the commands you use to configure and view Telnet settings. You can use Telnet to manage the device from a remote management host.

ip telnet server enable

Use this command to enable Telnet connections to the system and to enable the Telnet Server Admin Mode. This command opens the Telnet listening port.

• Default: enabled
• Format: ip telnet server enable
• Mode: Privileged EXEC

no ip telnet server enable

Use this command to disable Telnet access to the system and to disable the Telnet Server Admin Mode. This command closes the Telnet listening port and disconnects all open Telnet sessions.

• Format: no ip telnet server enable
• Mode: Privileged EXEC

telnet

This command establishes a new outbound Telnet connection to a remote host. The host value must be a valid IP address or host name. Valid values for port should be a valid decimal integer in the range of 0 to 65535, where the default value is 23. If <debug> is used, the current Telnet options enabled is displayed. The optional line parameter sets the outbound Telnet operational mode as linemode where, by default, the operational mode is character mode. The localecho option enables local echo.

• Format: telnet <ip-address|hostname port> [debug] [line] [localecho]
• Modes:
  • Privileged EXEC
  • User EXEC

telnetcon maxsessions

This command specifies the maximum number of Telnet connection sessions that can be established. A value of 0 indicates that no Telnet connection can be established. The range is 0-5.

• Default: 5
• Format: telnetcon maxsessions <0-5>
• Mode: Privileged EXEC

no telnetcon maxsessions

This command sets the maximum number of Telnet connection sessions that can be established to the default value.

• Format: no telnetcon maxsessions
• Mode: Privileged EXEC

telnetcon timeout

This command sets the Telnet connection session timeout value, in minutes. A session is active as long as the session has not been idle for the value set. The time is a decimal value from 1 to 160.

NOTE: When you change the timeout value, the new value is applied to all active and inactive sessions immediately. Any sessions that have been idle longer than the new timeout value are disconnected immediately.

• Default: 5
• Format: telnetcon timeout <1-160>
• Mode: Privileged EXEC

no telnetcon timeout

This command sets the Telnet connection session timeout value to the default.

NOTE: Changing the timeout value for active sessions does not become effective until the session is accessed again. Also, any keystroke activates the new timeout duration.

• Format: no telnetcon timeout
• Mode: Privileged EXEC

show telnet

This command displays the current outbound Telnet settings. In other words, these settings apply to Telnet connections initiated from the switch to a remote system.

• Format: show telnet
• Modes:
  • Privileged EXEC
  • User EXEC

The display parameters for above command are:

• Outbound Telnet Login Timeout: The number of minutes an outbound Telnet session is allowed to remain inactive before being logged off.
• Maximum Number of Outbound Telnet Sessions: The number of simultaneous outbound Telnet connections allowed.
• Allow New Outbound Telnet Sessions: Indicates whether outbound Telnet sessions will be allowed.

show telnetcon

This command displays the current inbound Telnet settings. In other words, these settings apply to Telnet connections initiated from a remote system to the switch.

• Format: show telnetcon
• Modes:
  • Privileged EXEC
  • User EXEC

The display parameters for above command are:

• Remote Connection Login Timeout (minutes): This object indicates the number of minutes a remote connection session is allowed to remain inactive before being logged off. May be specified as a number from 1 to 160. The factory default is 5.
• Maximum Number of Remote Connection Sessions: This object indicates the number of simultaneous remote connection sessions allowed. The factory default is 5.
• Allow New Telnet Sessions: New Telnet sessions will not be allowed when this field is set to no. The factory default value is yes.