Hi,

Same problem for me.

It's seem the switch cannot support non interactive mode and close immediately the session.

I tried with a public key ssh connexion, the connexion work in non batch mode but close in batch mode.

I seen the same problem on other brand switch that fixed by the command "undo ssh server authentication-type keyboard-interactive enable" but I can't find similar command for the TL-SG3424.

  @torp 

I've abandoned using SSH. Instead i'm using now expect (on almost all Linux systems available and easy to use) wich works properly.

Herre's a sample script wich triggers an TFTP to save the current configuration:

#! /usr/bin/expect

#
# Sample session
#
#  netconf@sn11g1:/root$ ssh netconf@l2acsw2.lsn
#
#  l2acsw2>ena
#
#  Password: **********
#
#  l2acsw2#copy startup-config tftp ip-address 192.168.154.66 filename l2acsw2
#   Start to backup user config file......
#
#   Backup user config file OK.
#
#
#  l2acsw2#exit
#
#  l2acsw2>exit
#  Connection to l2acsw2.lsn closed.
#  netconf@sn11g1:/root$
#

# Synopsis:
#   grabL2acsw2Config target fileExtend
#
#   target: The DNS name of the target switch without the domain part.

#   fileExtend: The extend to be used on the config file.
#

set target [lindex $argv 0].lsn.
set filename [lindex $argv 0]
set suffix [lindex $argv 1]

spawn ssh netconf@$target

expect "l2acsw*?>"  { send "enable\r" }
expect "Password:"  { send "top_secret_enable_password\r" }

expect "l2acsw*?#"  { send "copy startup-config tftp ip-address 192.168.234.56 filename $filename.$suffix\r" }

expect "l2acsw*?#"  { send "exit\r" }
expect "l2acsw*?>"  { send "exit\r" }

close

send_user "\r"

# e.o.f.

It's called like

/path/to/script/grabL2acswConfig l2acsw4 cfg

The log in uses public key authentication for the user netconf.

My switches have all hostnames like 'l2acsw' with a numeric suffix. So, if you want to try this for your self you have to change the term 'l2acsw*' to the correct prompt of your switch.

Cheers

Erich

  @EricH. 

Thanks, I discovered the expect method a few hours after posting :)

It works fine with this method.