telnet

telnet {vr vr_name} [host_name | remote_ip] {port}

Description

Allows you to Telnet from the current command-line interface session to another host.

Syntax Description

vr

Specifies use of a virtual router.

Note: User-created VRs are supported only on the platforms listed for this feature in the Switch Engine v33.1.1 Licensing Guide document.
vr_name Specifies the name of the virtual router.
host_name Specifies the name of the host.
remote_ip Specifies the IP address of the host.
port Specifies a TCP port number. The default is port 23.

Default

Usage Guidelines

Only VT100 emulation is supported.

Before you can start an outgoing Telnet session, you need to configure the switch IP parameters. To open a Telnet connection, you must specify the host IP address or the host name of the device you want to connect to. Check the user manual supplied with the Telnet facility if you are unsure of how to do this. Although the switch accepts IPv6 connections, you can only Telnet from the switch to another device with an IPv4 address.

You must configure DNS in order to use the host_name option.

Host Name and Remote IP Address Character Restrictions

This section provides information about the characters supported by the switch for host names and remote IP addresses.

When specifying a host name or remote IP address, the switch permits only the following characters:
  • Alphabetical letters, upper case and lower case (A-Z, a-z)
  • Numerals (0-9)
  • Period ( . )
  • Dash ( - ) Permitted only for host names
  • Underscore ( _ ) Permitted only for host names
  • Colon ( : )

When naming or configuring an IP address for your network server, remember the requirements listed above.

Virtual Router Requirements

The vr_name option specifies the name of the virtual router. The valid virtual router names at system boot-up are VR-Mgmt, VR-Control, and VR-Default; however, you can only Telnet on VR-Mgmt and VR-Default. In ExtremeXOS 10.1, the valid virtual routers are VR-0, VR-1, and VR-2 respectively, and Telnet used VR-0 by default. For more information about virtual routers, see Virtual Routers.

Example

The following command starts a Telnet client communication to the host at IP address 123.45.67.8:

telnet 123.45.67.8

The following command starts a Telnet client communication with a host named sales:

telnet sales

History

This command was first available in ExtremeXOS 10.1.

Support for the following virtual routers was added in ExtremeXOS 11.0: VR-Mgmt and VR-Default.

Platform Availability

This command is available on all Universal switches supported in this document.

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