Hello,
here is a sample configuration, as well as some additonal explanantions:
Take a Cisco 2811 router and run one of the async serial ports to each of the consoles on your switches, routers, firewalls, or whatever you want to connect to. Next, configure the new Cisco terminal server with the following ip host commands to make it easier for you to connect to each device.
ip host Router1 2016 10.253.100.19
ip host Router2 2015 10.253.100.19
ip host Router3 2013 10.253.100.19
The third section of each command contains the port number for the devices, and the last two digits of the number designate the port. For example, 2016 follows the first router ("Router1"), meaning this router is on port 16. The last part of the command contains the IP address of the Ethernet port on the console server.
By creating these names, you don't need to know which port the device is on. All you need to do is Telnet to the host (in this case, Router1) off of the console server.
You could also reach this device directly from a PC. For example, you could Telnet to 10.253.100.19 2016 from your PC. This tells the Telnet client to go to port 2016 instead of the default Telnet port 23.
Here is the sample config:
ciscotermserver#sh run
Building configuration...
Current configuration : 2656 bytes
!
version 12.3
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
boot-start-marker
boot-end-marker
!
enable secret 5 XXXXXXXXXXXXXXXXXXXXXXX
!
username root privilege 15 password 7 XXXXXXXXXXXXXXXXXXXXXX
no aaa new-model
ip subnet-zero
no ip domain lookup
ip host Router1 2016 10.253.100.19
ip host Router2 2015 10.253.100.19
ip host Router3 2014 10.253.100.19
ip host Router4 2013 10.253.100.19
ip host Router5 2012 10.253.100.19
ip host Router6 2011 10.253.100.19
ip host Router7 2010 10.253.100.19
ip host Router8 2009 10.253.100.19
ip host Router9 200810.253.100.19
ip host Router10 2007 10.253.100.19
ip host Router11 2006 10.253.100.19
ip host Router12 2005 10.253.100.19
!
interface Ethernet0
ip address 10.253.100.19 255.255.0.0
!
interface Serial0
no ip address
shutdown
!
interface Serial1
no ip address
shutdown
!
no ip http server
no ip classless
!
!
!
!
line con 0
line 1
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 2
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 3
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 4
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 5
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 6
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 7
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 8
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 9
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 10
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 11
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
speed 38400
line 12
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 13
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 14
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 15
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line 16
session-timeout 30
exec-timeout 0 0
no exec
transport input telnet
line aux 0
line vty 0 4
exec-timeout 60 0
login local
!
end
ciscotermserver#
HTH,
GP
