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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