ssh timeout

[Lango]

Hi,
I created a number of scripts that step through a file containing server
names.  It will then run a command through an ssh session on the remote
servers.
The list of servers is quite long and often an ssh session cannot be
established for one reason or another.
I am trying to find a way to define a timeout value after which the script
will no longer attempt to talk to the server and go on to the next server in
the list.
How can I accomplish that?
Here is part of my script:
 - - - - - - 8< - - - - - 
until [ $done ]
do
read <&3 servername 
        if [ $? != 0 ]; then
                done=1
                continue
        fi
  ...
        cat < bkuplist.$$ |ssh $servername "sudo tar -zcf
/tmp/$servername.tar.gz `cat -`"  2> /dev/null
        scp $servername:/tmp/$servername.tar.gz $ESSPATH/ 2> /dev/null
  ...
done
 - - - - - - 8< - - - - - 
Any help is appreciated and thanks in advance.

Lango
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