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Chapter 2

Memory Requirements

Determining DRAM or SDRAM Required If the Router

Has Only 32 MB of Memory (NPE-100, NPE-150, and NPE-200)

This section is applicable only to the NPE-100, NPE-150, and NPE-200.

To determine the minimum amount of DRAM or SDRAM required by a Cisco 7200 series router to

support a combination of installed port adapter types and a Cisco IOS software subset image, complete

the following steps only if your Cisco 7200 series router has 32 MB of DRAM or SDRAM.

If your Cisco 7200 series router has 64 MB or more of DRAM or SDRAM installed, you have enough

memory to support any combination of installed port adapter types and Cisco IOS software subset

images.

For Cisco 7206 and Cisco 7206VXR router shelf memory requirements, refer to the Cisco AS5800

Note

Universal Access Server documentation at

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_serv/as5800/index.htm.

The steps in this section assume that the port adapter hardware configuration of your Cisco 7200

Note

series router follows the configuration guidelines explained in the

Requirements" section on page

If you need assistance when determining DRAM or SDRAM requirements for your Cisco 7200 series

router, contact the Cisco Technical Assistance Center (TAC). See the

Obtaining Support, and Security Guidelines" section on page vii

Use the worksheets in the

Tip

page 2-2

Add the processor memory requirements for all of the installed port adapter types and the Cisco IOS

Step 1

software subset image. (See

Table 1-6

series routers. Port adapters available for use in Cisco 7200 series routers require a minimum amount of

processor memory to function properly in the routers. The amount of processor memory required by a

port adapter depends on the number of interfaces or channels the port adapter provides.

Note

For DRAM and Flash memory requirements for your Cisco IOS release and platform, see Cisco IOS

Release Notes at

http://www.cisco.com/univercd/cc/td/doc/product/software/index.htm.

The amount of processor memory listed in

and some default data memory the image requires at system startup.

OL-3875-11

Determining DRAM or SDRAM Required If the Router Has Only 32 MB of Memory (NPE-100, NPE-150, and NPE-200)

1-4.

"Sample Configuration Showing Processor Memory Required" section on

to help calculate your system memory requirements if your router has 32 MB of memory.

Table 1-6

lists the processor memory required for the port adapter types available for use in Cisco 7200

Some port adapters require additional processor memory to execute port adapter-specific

Cisco IOS software functionality.

each port adapter type (where applicable).

Cisco IOS Software

in Chapter 1, and

Table 2-5

Table 1-6

lists additional processor memory required for

Information:

Table 2-5

through

Table 2-11

Cisco 7200 Series Port Adapter Hardware Configuration Guidelines

"Configuration Guidelines and

"Obtaining Documentation,

for information on contacting TAC.

through

Table 2-11

in this chapter.)

is for the static size of the image

2-5