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
Ensuring Adequate Flash Memory for the New System Image
This section describes how to check whether your router has enough flash memory to upgrade to the new
system image and, if necessary, how to properly delete files in flash memory to make room for the new
system image.
Cisco 3900 series, Cisco 2900 series, and Cisco 1900 series ISRs have two external CF slots and two
USB slots. Use the secondary CF for overflow files, if required. Table 3 lists CF slot number, name, and
size.
Table 4 lists the USB slot number, name, and size.
Prerequisites
In order to check whether your router has enough flash memory for a new system image, you need to
obtain the image’s flash requirements from Cisco:
• Choose the Cisco IOS release and system image to which you want to upgrade. See the “Information
About Upgrading the System Image” section on page 218.
• Select the system image in the Cisco IOS Upgrade Planner at:
http://www.cisco.com/cgi-bin/Software/Iosplanner/Planner-tool/iosplanner.cgi.
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.
From the File Download Information table, write down the minimum flash requirements for the
image.
Table 3 Compact Flash Slot Number, Name, and Size
Slot Number CF Filename Size
1
1. The maximum storage capacity for the CF in Slot0 and Slot1 is 4GB.
Slot0
2
2. Slot0 is the default CF slot. CF in Slot0 stores system image, configuration, and
data files. CF must be present in this slot for the router to boot and perform
normal file operations.
flash0: 256MB
Slot1
flash1: 0
Table 4 USB Slot Number, Name, and Size
Slot Number USB Filename Size
1
1. The maximum storage capacity for the USB in Slot0 and Slot1 is 4GB.
Slot0
usbflash0: 64MB
Slot1
usbflash1: 0

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