The document provides instructions for configuring IP addresses on interfaces of two Cisco routers, R1 and R2. It describes configuring IP address 192.168.1.1 on R1's fa0/0 interface and 192.168.2.1 on R2's fa0/0 interface. It also describes configuring IP address 172.16.1.1 on R1's serial interface S0/0 as the DCE device and 172.16.1.2 on R2's serial interface S0/1 as the DTE device. The configuration includes setting the clock rate on R1's serial interface.

1. Ip address configuration for Cisco router (2611xm)
interfaces (fast ethernet and serial)
WWW.TCPIPGURU.COM

3. Description
 Configure ip address 192.168.1.1 for R1 router’s
fa0/0 interface and 192.168.2.1 for R2 router’s fa0/0
interface.
 Configure ip address 172.16.1.1 for R1 routers S0/0
interface and provide clock rate (DCE)and 172.16.1.2
for R2 routers S0/1 interface.

4. R1>enable
R1#config t
R1(config)#int fa0/0
R1(config-if)#ip address 192.168.1.1 255.255.255.0
R1(config-if)#bandwidth 1000 (optional)
R1(config-if)#no shutdown
R1(config-if)#exit
R2>enable
R2#config t
R2(config)#int fa0/0
R2(config-if)#ip address 192.168.2.1 255.255.255.0
R2(config-if)#bandwidth 1000 (optional)
R2(config-if)#no shutdown
R2(config-if)#exit

5. AND
(SERIAL DCE INTERFACE)
R1(config)#int s0/0
R1(config-if)#ip address 172.16.1.1 255.255.0.0
R1(config-if)#no shutdown
R1(config-if)#clock rate 64000
R1(config-if)#exit
(SERIAL DTE INTERFACE)
R2(config)#int s0/1
R2(config-if)#ip address 172.16.1.2 255.255.0.0
R2(config-if)#no shutdown
R2(config-if)#exit