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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Basic Router Configuration
Configuring Wireless LAN Interfaces
Configuring Wireless LAN Interfaces
The wireless LAN interface on the Cisco 1941W router enables connection to the router through
interface wlan-ap0. For more information about configuring a wireless connection, see the
“Configuring the Wireless Device” section on page 247.
Configuring Interface Card and Module Interfaces
To configure interface cards and modules inserted in internal services module (ISM), enhanced
high-speed WAN interface card (EHWIC), Ethernet WAN interface card (EWIC), and service module
(SM) slots, see the appropriate interface card or module configuration documents on Cisco.com.
Configuring a Loopback Interface
The loopback interface acts as a placeholder for the static IP address and provides default routing
information.
For complete information on the loopback commands, see the Cisco IOS Release configuration guide
documentation set.
To configure a loopback interface, follow these steps, beginning in global configuration mode.
SUMMARY STEPS
1. interface type number
2. ip address ip-address mask
3. exit
Step 3
no shutdown
Example:
Router(config-if)# no shutdown
Router(config-if)#
Enables the GE interface, changing its state
from administratively down to administratively
up.
Step 4
exit
Example:
Router(config-if)# exit
Router(config)#
Exits configuration mode for the GE interface
and returns to global configuration mode.
Command Purpose
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