Cisco 2911 Configuration Guide

D-4
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Appendix D Changing the Configuration Register Settings
Changing the Configuration Register Settings
Changing the Configuration Register Settings
You can change the configuration register settings from either the ROM monitor or the Cisco IOS CLI.
This section describes how to modify the configuration register settings from the Cisco IOS CLI.
To change the configuration register using the ROM monitor, see Appendix C, “Using ROM Monitor,”
in this guide.
To change the configuration register settings from the Cisco IOS CLI, complete the following steps:
Step 1 Connect a terminal or PC to the router console port. If you need help, see the hardware installation guide
for your router.
Step 2 Configure your terminal or terminal emulation software for 9600 baud (default), 8 data bits, no parity,
and 2 stop bits.
Step 3 Power on the router.
Step 4 If you are asked whether you would like to enter the initial dialog, answer no:
Would you like to enter the initial dialog? [yes]: no
After a few seconds, the user EXEC prompt (Router>) appears.
Step 5 Enter privileged EXEC mode by typing enable and, if prompted, enter your password:
Router> enable
Password: password
Router#
Step 6 Enter global configuration mode:
Router# configure terminal
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
Step 7 To change the configuration register settings, enter the config-register value command, where value is
a hexadecimal number preceded by 0x:
Router(config)# config-register 0xvalue
Note The Cisco IOS software does not allow you to change the console speed bits directly with the
config-register command. To change the console speed from the Cisco IOS CLI, see the
“Configuring the Console Line Speed (Cisco IOS CLI)” section on page D-5.
Step 8 Exit global configuration mode:
Router(config)# end
Router#
0 1 1 2400
0 0 1 1200
Table D-4 Console Line Speed Configuration Register Bit Combinations (continued)
Bit 5 Bit 11 Bit 12
Console Line Speed
(baud)

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