Cisco 1921 User Manual

Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs
Modules Internal to the Cisco 1941 Router
11
Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs
Software Requirement for ISMs
Cisco IOS software of a specified release or later release is required for using an ISM.
To determine the version of Cisco IOS software that is running on your router, log in to the router and
enter the show version command:
Router> show version
Cisco Internetwork Operating System Software
2900 Software (C2900-ADVENTERPRISEK9-M), Version 12.3(8.2)T, INTERIM SOFTWARE
ISM Location
See the “Locating Modules” section on page 7 for the location of the ISM.
Removing an ISM
Before you remove an ISM, remove the chassis cover as described in the “Opening and Closing the
Chassis” section on page 5.
To remove an ISM, perform the following procedure. To complete this procedure, you need a number 2
Phillips screwdriver or flat-blade screwdriver.
Step 1 Locate the ISM to be removed. See the “Locating Modules” section on page 7 for the location of the
ISM.
Step 2 Remove the four screws from the ISM as shown in Figure 7.
Figure 7 Removing Screws from the ISM
Step 3
Carefully lift the ISM from the connector and the standoff. Keep the ISM parallel with the system board
to prevent damage to the connector and standoff.
Step 4 Place the ISM in an antistatic bag to protect it from ESD damage.
1 ISM retention screws (4)
250947
1
1

Cisco 1921 Specifications

General

Product Type	Router
WAN Ports	2
Power Supply	AC 120/230 V (50/60 Hz)
Connectivity Technology	Wired
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Memory	256 MB DRAM
Flash Memory	128 MB
Expansion Slots	1 x ISM
USB Ports	2 x USB
Dimensions	4.4 x 33 x 24.9 cm
Network / Transport Protocol	IPSec
Remote Management Protocol	SNMP, Telnet, HTTP, HTTPS, SSH
Features	Firewall protection, VPN support
Compliant Standards	IEEE 802.1Q
Operating Temperature	0 to 40 °C
Storage Temperature	-20 to 65 °C
Humidity	10 to 85% (non-condensing)
Weight	3.5 kg
Performance	Up to 25 Mbps throughput