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 Upgrading the Cisco IOS Software
How to Upgrade the Cisco IOS Image
Which Cisco IOS Release Is Running on My Router Now?
To determine the Cisco IOS release that is currently running on your router, and the filename of the
system image, enter the show version command in user EXEC or privileged EXEC mode.
How Do I Choose the New Cisco IOS Release and Feature Set?
To determine which Cisco IOS releases and feature are supported on your platform, go to Cisco Feature
Navigator at http://www.cisco.com/go/cfn. You must have an account at Cisco.com. If you do not have
an account or have forgotten your username or password, click Cancel at the login dialog box and follow
the instructions that appear.
Cisco 3900 series, 2900 series, and 1900 series ISRs support Cisco IOS software entitlement and
enforcement. See Software Activation on Cisco Integrated Services Routers at Cisco.com for feature and
package license information.
Where Do I Download the System Image?
To download a system image you must have an account at Cisco.com to gain access to the following
websites. If you do not have an account or have forgotten your username or password, click Cancel at
the login dialog box, and follow the instructions that appear.
If you know the Cisco IOS release and feature set you want to download, go directly to
http://www.cisco.com/kobayashi/sw-center/index.shtml.
For more information before selecting the Cisco IOS release and feature set, go to the Software
Download Center at:
http://www.cisco.com/public/sw-center/index.shtml.
For more information about Loading and Managing System images, go to
http://www.cisco.com/en/US/docs/ios/fundamentals/configuration/guide/cf_system_images.html.
How to Upgrade the Cisco IOS Image
This section provides information about upgrading the Cisco IOS image on the router.
• Saving Backup Copies of Your Old System Image and Configuration, page 220
• Ensuring Adequate DRAM for the New System Image, page 221
• Ensuring Adequate Flash Memory for the New System Image, page 223
• Copying the System Image into Flash Memory, page 226
• Loading the New System Image, page 232
• Saving Backup Copies of Your New System Image and Configuration, page 237

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