DETAILED STEPS
PurposeCommand or Action
Enters the configuration mode for a Gigabit Ethernet WAN
interface on the router.
interface type number
Example:
Router(config)# interface gigabitethernet 0
Step 1
Example:
Router(config-if)#
Sets the IP address and subnet mask for the specified
Gigabit Ethernet interface.
ip address ip-address mask
Example:
Router(config-if)# ip address 192.168.12.2
255.255.255.0
Step 2
Example:
Router(config-if)#
Enables the Ethernet interface, changing its state from
administratively down to administratively up.
no shutdown
Example:
Router(config-if)# no shutdown
Step 3
Example:
Router(config-if)#
Exits configuration mode for the Gigabit Ethernet interface
and returns to global configuration mode.
exit
Example:
Router(config-if)# exit
Step 4
Example:
Router(config)#
Configuring the Cellular Wireless WAN Interface
The Cisco 819 ISRs provide a Third-Generation (3G) wireless interface for use over Global System for Mobile
Communications (GSM) and code division multiple access (CDMA) networks. The interface is a 34-millimetre
embedded mini express card.
Its primary application is WAN connectivity as a backup data link for critical data applications. However, the
3G wireless interface can also function as the router’s primary WAN connection.
Cisco 800 Series Integrated Services Routers Software Configuration Guide
OL-31704-02 23
Basic Router Configuration
Configuring the Cellular Wireless WAN Interface
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