Cannot use the Save or Reboot command line options

Issue:

When using the Windows Telnet client to configure the serial server products, with CLI commands that require a Y/N answer is bypassed and returns back to the command line.

In some cases, communication to attached serial devices will appear that the device's prompts are being echoed/repeated, displays double prompts, or jumps an additional line.

Cause:

Windows Telnet is configured, by default, to send a CRLF (carriage return + line feed) when the enter key is pressed.
The LF will answer the Y/N prompt so causes the command to be passed.

This may also cause serially attached devices to respawn the prompt as the LF can be views as a CR.

Solution:
The Windows Telnet client for Windows 2000/XP can change this parameter by dropping to the telnet prompt usually by ctrl+"]" :

At the Telnet prompt type: unset crlf

Type "display" to see current settings.

There is no option to change the Telnet Client behaviour for Windows 9X, ME, or NT. It is advised to use a different Telnet client.


Article ID:
21
Published:
1/2/2003 3:31:45 PM
Last Modified:
5/9/2006 10:22:11 AM
Issue Type:
Trouble Shooting