Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm trying to setup a simple script to update the configuration on a Dell PowerConnect 6224. I have SSH setup and working and can connect to the switch using either Putty or PLink but when I use plink's -m option to specify the file containing the commands I get a "packet integrity error".

Plink will connect fine without the -m option, or with an empty command file, but as soon as I add a command (eg. "quit") to the file it fails.

Has anyone had any luck scripting commands to these switches?

The full -v output is:

Looking up host ""
Connecting to port 22
Server version: SSH-1.99-OpenSSH_4.3
We claim version: SSH-2.0-PuTTY_Release_0.60
Using SSH protocol version 2
Doing Diffie-Hellman group exchange
Doing Diffie-Hellman key exchange with hash SHA-1
Host key fingerprint is:
ssh-rsa 1024 97:e5:8e:d6:a5:0d:b0:a6:96:78:be:93:e3:57:79:d4
Initialised AES-256 SDCTR client->server encryption
Initialised HMAC-SHA1 client->server MAC algorithm
Initialised AES-256 SDCTR server->client encryption
Initialised HMAC-SHA1 server->client MAC algorithm
Using username "test-user".
Keyboard-interactive authentication refused
Sent password
Access granted
Opened channel for session
Received disconnect message (protocol error)
Disconnection message text: Packet integrity error.
Server sent disconnect message
type 2 (protocol error):
"Packet integrity error."
FATAL ERROR: Server sent disconnect message
type 2 (protocol error):
"Packet integrity error."

share|improve this question

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.