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Router Configuration

Entering Configurations

NOTE : For this example it is assumed that the interfaces of the router have to beconfigured with the following details :

Name IP Address Subnetmask

Interface0/0

128.82.8.10 (Class A IPaddress)

255.255.0.0 (Standard Class BSubnetmask)

Interface

0/1

128.82.10.10 (Class B IP

address)

255.255.0.0 (Standard Class B

Subnetmask)

The Example attempts to briefly explain the meaning of each individual command.The command prompt changes as the user navigates through the IOS CLI hierarchy.Also notice that global parameters are configured at the global configuration level(indicated by the "Router(config)#" prompt) whereas interface specific commands areentered after switching to the particular interface {indicated by the "Router(config-if)#" prompt}. Global parameters and interface parameters are discussed further inthe Displaying Configurations section under Router Management.

1.) Bring the Router to Priveleged EXEC modeRouter>enable

2.)Change to global configuration level giving the user access to change theconfiguration of the router.

Router# configure terminal3.) Switch to Configure the fastethernet0/0 interfaceCommand : interface Router(config)# interface fastethernet0/0

4.)Configure an IP address 128.82.8.10 and Subnet mask of 255.255.0.0

Command : ip address Router(config-if)# IP address 128.82.8.10 255.255.0.0

5.)Activate fastethernet0/0 interface.Command : no shutdownRouter(config-if)# no shutdown

6.)Exit back to global configuration level.

Router(config-if)# exit7.)Configure the fastethernet0/1 interface

Command : interface Router(config)# interface fastethernet0/1

8.)Configure IP address 128.82.10.10 with subnetmask of 255.255.0.0 onfastethernet0/1 interface.

Command : ip address Router(config-if)# ip address 128.82.10.10 255.255.0.0

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9.)Activate fastethernet0/1 interfaceCommand : no shutdownRouter(config-if)# no shutdown

10.)Exit back to global configuration levelRouter(config-if)# exit

11.)Specify routing engine (RIP) - {Other details may be required for some otherrouting engines}

Command : router Router(config)# router rip

12.)Add the network 128.82.0.0 to RIP engineCommand : network Router(config-router)# network 128.82.0.0

13.)Exit back to global configuration levelRouter(config-router)# exit

14.)Exit out of global configuration levelRouter(config)# ^z

15.)Save Configuration into NVRAMRouter# write

16.)See the current configuration of the Router.Router# show configuration

17.)Router>- indicates user is back to user EXEC levelRouter# disable

18.)Router>- indicates user is back to user EXEC level