Cisco 7206VXR Hardware Guide - Page 39

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) 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. Note For Cisco 7206 and Cisco 7206VXR router shelf memory requirements, refer to the Cisco AS5800 Universal Access Server documentation at http://www.cisco.com/univercd/cc/td/doc/product/access/acs_serv/as5800/index.htm. Note The steps in this section assume that the port adapter hardware configuration of your Cisco 7200 series router follows the configuration guidelines explained in the "Configuration Guidelines and Requirements" section on page 1-4. 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 Documentation, Obtaining Support, and Security Guidelines" section on page vii for information on contacting TAC. Tip Use the worksheets in the "Sample Configuration Showing Processor Memory Required" section on page 2-2 to help calculate your system memory requirements if your router has 32 MB of memory. Step 1 Add the processor memory requirements for all of the installed port adapter types and the Cisco IOS software subset image. (See Table 1-6 in Chapter 1, and Table 2-5 through Table 2-11 in this chapter.) Table 1-6 lists the processor memory required for the port adapter types available for use in Cisco 7200 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 Some port adapters require additional processor memory to execute port adapter-specific Cisco IOS software functionality. Table 1-6 lists additional processor memory required for each port adapter type (where applicable). For DRAM and Flash memory requirements for your Cisco IOS release and platform, see Cisco IOS Release Notes at Cisco IOS Software Information: http://www.cisco.com/univercd/cc/td/doc/product/software/index.htm. The amount of processor memory listed in Table 2-5 through Table 2-11 is for the static size of the image and some default data memory the image requires at system startup. OL-3875-11 Cisco 7200 Series Port Adapter Hardware Configuration Guidelines 2-5