Cisco 4451-X User Manual

6-4
Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
OL-27644-01
Chapter 6 Installing and Upgrading Internal Modules and FRUs
Accessing Internal Modules
Accessing Internal Modules
To access the internal modules on the router., you must first remove the chassis cover. See the Removing
and Replacing the Chassis Cover, page 6-4 for instructions on how to remove and later replace the
chassis cover on the Cisco ISR 4451-Xs.
Removing and Replacing the Chassis Cover
The Cisco ISR 4451-Xs have a removable cover.
Caution Do not run the router with the cover off. Doing so can cause the router to overheat very quickly.
Warning Before opening the unit, disconnect the telephone-network cables to avoid contact with
telephone-network voltages. Statement 1041
Note Use a number-2 Phillips screwdriver to perform the following tasks.
Removing the Cover
To remove the cover, perform the following steps.
Step 1 Read the “Safety Warnings” section on page 6-2 and disconnect the power supply before you perform
any module replacement.
Step 2 Confirm the router is turned off and disconnected from the power supply or power supplies. If a
redundant power is used, disconnect from the redundant power supply.
Step 3 Place the chassis on a flat surface.
Step 4 Remove the three cover screws at the back of the router cover. See Figure 6-1.
Step 5 Lift the cover from the back edge to a 45-degree angle.
Step 6 Pull the cover toward you to disengage the slots along the front (bezel) edge of the chassis. See
Figure 6-1.
Replacing the Cover
To replace the cover, perform the following steps.
Step 1 Read the Safety Warnings, page 6-2 and disconnect the power supply before you perform any module
replacement.
Step 2 Confirm the router is turned off and disconnected from the power supply or power supplies. If a
redundant power is used disconnect from the redundant power supply.
Step 3 Place the chassis on a flat surface.

Cisco 4451-X Specifications

General

Aggregate Throughput	2 Gbps
Total Onboard WAN or LAN 10/100/1000 Ports	4
RJ-45-based Ports	4
SFP-based Ports	4
Enhanced Service Module (SM-X) Slots	2
NIM (Network Interface Module) Slots	3
Onboard ISC Slot	1
Memory (DRAM) Default	4 GB
Memory (DRAM) Maximum	16 GB
Flash Memory	8 GB
Rack Height	2 RU
Product Type	Router
Form Factor	Rack-mountable
Connectivity Technology	Wired
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Product Series	Cisco 4000 Series
Model	4451-X
Network/Transport Protocol	IPsec
Remote Management Protocol	SNMP
Features	Firewall protection, VPN support, Quality of Service (QoS), IPv6 support
Interfaces	4 x 10/100/1000 Ethernet ports, 4 x SFP ports
Power	AC 100-240 V (50/60 Hz)
Memory	4 GB
Operating Temperature	0 to 40 °C
Storage Temperature	-40 to 70 °C
Humidity	5% to 95% non-condensing