router 2500 AUX----NULL MODEN CABLE-----ROUTER 2500 AUX
Before You Begin
This configuration has Cisco 2500-series rout ers back-to-back using the async AUX port. The Cisco AUX port is connected to another Cisco AUX port running PPP. The connection has been configured to allow IP for a permanent connection.
Ingredients
For this recipe, you need the following:
A null modem cable.
You may also need an RJ45-to-DB25 adapter converter. For more information on cables, see the Cables documentation.
Router 1
version 11.1
service udp-small-servers
service tcp-small-servers
!
hostname Router1
!
interface Ethernet0
no ip address
shutdown
!
interface Serial0
no ip address
shutdown
!
interface Serial1
no ip address
shutdown
!
interface Async1
ip address 192.168.10.1 255.255.255.0
! -- the IP address on the AUX ports of both routers must be in the same subnet
encapsulation ppp
! -- set PPP as encapsulation
async dynamic routing
async mode dedicated
!
no ip classless
ip route 0.0.0.0 0.0.0.0 Async1
logging buffered
!
line con 0
exec-timeout 0 0
line aux 0
modem InOut
transport input all
rxspeed 38400
txspeed 38400
flowcontrol hardware
line vty 0 4
login
!
end
Router 2
version 11.1
service udp-small-servers
service tcp-small-servers
!
hostname Router2
!
!
interface Ethernet0
no ip address
shutdown
!
interface Serial0
no ip address
shutdown
!
interface Serial1
no ip address
shutdown
!
interface Async1
ip address 192.168.10.2 255.255.255.0
! -- the IP address on the AUX ports of both routers must be in the same subnet
encapsulation ppp
async dynamic routing
async mode dedicated
!
no ip classless
ip route 0.0.0.0 0.0.0.0 Async1
logging buffered
!
line con 0
exec-timeout 0 0
line aux 0
modem InOut
transport input all
rxspeed 38400
txspeed 38400
flowcontrol hardware
line vty 0 4
login
!
