12
Installing and Configuring Cisco 802 IDSL and Cisco 804 IDSL Routers
78-10368-03
Example of Basic Configuration Output
Step 12 Change to interface command mode. For example:
router(config)# interface ethernet0
router(config-if)#
Step 13 Enter the IP address and subnet mask for the LAN. For example:
router(config-if)# ip address 192.168.1.1 255.255.255.0
Step 14 Enable Network Address Translation (NAT) on your LAN. The inside network address is not directly
routed to the Internet but is subject to translation to a routable address outside the LAN.
router(config-if)# ip nat inside
Step 15 Set the BRI interface IP address. In the following example, IP addresses are dynamically assigned:
router(config-if)# interface bri0
router(config-if)# ip address negotiated
Step 16 Enable PPP.
router(config-if)# encapsulation ppp
Step 17 Configure CHAP authentication.
router(config-if)# ppp authentication chap
Step 18 Configure a valid Internet address to which the inside network address will be translated.
router(config-if)# ip nat outside
Step 19 Define the router hostname and password to authenticate. For example:
router(config-if)# ppp chap hostname 802
router(config-if)# ppp chap password cisco
Step 20 Exit to global configuration mode. Add default route and interface. For example:
router(config-if)# exit
router(config)# ip route 0.0.0.0 0.0.0.0 bri0
Step 21 End configuration mode.
router(config)# end
router#
Step 22 In user mode, set global NAT commands. In the following example, all inside network addresses
assigned to interface BRI0 are configured for translation, and the access list that contains the inside
network addresses is defined.
router# ip nat inside source list 1 interface bri0 overload
router# access-list 1 permit 192.168.1.0 0.0.0.255
Step 23 Save your configuration.
router# copy running-config startup-config
Example of Basic Configuration OutputCurrent configuration:
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