Gary,
Take a look at this config for a 2509. When you telnet into the access-server you get a menu to select which port/device you want to telnet to. If it is not available, you can clear the session from the menu. It is not as automated as what you want but it is quite handy.
========
! If you go in on the console port then you must issue
! "menu cserver" to start the menu up.
!
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname console-server
!
enable secret cisco
!
enable password cisco
!
ip subnet-zero
no ip domain-lookup
!
ip host c1 2001 10.1.0.1
ip host c2 2002 10.1.0.1
ip host c3 2003 10.1.0.1
ip host c4 2004 10.1.0.1
ip host c5 2005 10.1.0.1
ip host c6 2006 10.1.0.1
ip host c7 2007 10.1.0.1
ip host c8 2008 10.1.0.1
!
process-max-time 200
!
interface Loopback20
ip address 10.1.0.1 255.255.255.255
no ip directed-broadcast
!
interface Ethernet0
ip address 10.1.1.2 255.255.255.0
no ip directed-broadcast
no ip route-cache
no ip mroute-cache
!
interface Serial0
no ip address
no ip directed-broadcast
no ip route-cache
no ip mroute-cache
shutdown
!
interface Serial1
no ip address
no ip directed-broadcast
no ip route-cache
no ip mroute-cache
no shutdown
!
!
ip classless
no ip http server
!
menu cserver title $If you have problems connecting to your device
clear the connection via cl+# (ie:cl1) and try again.
To exit back out to the menu press "CTRL+SHIFT+6"
then "X". You must then clear the connection and
begin a new console session to re-connect to
that device.
--------------------------------------------------------
1 - Connect to console1
2 - Connect to console2
3 - Connect to console3
4 - Connect to console4
5 - Connect to console5
6 - Connect to console6
7 - Connect to console7
8 - Connect to console8
--------------------------------------------------------
show - show lines in use | menuexit - exit menu
Exit - logout | $
!
menu cserver prompt $Please enter command or selection:$
!
menu cserver command 1 tn c1
menu cserver command 2 tn c2
menu cserver command 3 tn c3
menu cserver command 4 tn c4
menu cserver command 5 tn c5
menu cserver command 6 tn c6
menu cserver command 7 tn c7
menu cserver command 8 tn c8
menu cserver command cl1 cl1
menu cserver command cl2 cl2
menu cserver command cl3 cl3
menu cserver command cl4 cl4
menu cserver command cl5 cl5
menu cserver command cl6 cl6
menu cserver command cl7 cl7
menu cserver command cl8 cl8
menu cserver command menuexit menu-exit
menu cserver command exit exit
menu cserver command show show line tty 1 8
menu cserver options show pause
menu cserver clear-screen
menu cserver single-space
!
alias exec cl1 clear line 1
alias exec cl2 clear line 2
alias exec cl3 clear line 3
alias exec cl4 clear line 4
alias exec cl5 clear line 5
alias exec cl6 clear line 6
alias exec cl7 clear line 7
alias exec cl8 clear line 8
alias exec tn telnet
privilege exec level 0 clear line
privilege exec level 1 clear
!
line con 0
exec-timeout 0 0
transport input none
!
line 1 8
no exec
exec-timeout 0 0
transport input all
telnet break-on-ip
telnet sync-on-break
telnet ip-on-break
flowcontrol hardware
!
line aux 0
transport input all
!
line vty 0 4
exec-timeout 0 0
password cisco
login
autocommand menu cserver
!
end
