Cisco 2911 Configuration Guide

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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

Cisco 2911 Specifications

General

Ethernet LAN	Yes
Cabling technology	10/100/1000Base-T(X)
Networking standards	IEEE 802.1Q, IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3ah, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet interface type	Gigabit Ethernet
DHCP client	-
Routing protocols	BGP, EIGRP, OSPF
Supported protocols	IPv4, IPv6, IS-IS, IGMPv3, PIM SM, SSM, DVMRP, IPSec, GRE, BVD, MPLS, L2TPv3, PPP, MLPPP, MLFR, HDLC, RS-232, RS-449, X.21, V.35, EIA-530, PPPoE, ATM
USB version	2.0
RS-232 ports	1
Expansion slots	4 x EHWIC 2 x DSP 1 x ISM
USB ports quantity	2
Ethernet LAN (RJ-45) ports	3
Firewall security	Cisco IOS
Input current	2.2 A
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	47 - 63 Hz
Power consumption (typical)	50 W
Product color	Black
Rack capacity	2U
Operating altitude	0 - 4000 m
Non-operating altitude	0 - 4570 m
Storage temperature (T-T)	-40 - 80 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	5 - 85 %
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Electromagnetic compatibility	47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1

Weight and Dimensions

Depth	304.8 mm
Width	438.2 mm
Height	88.9 mm
Weight	8200 g