Specifications

5
OL-4923-01 B0
Memory Components
Table 1 shows the memory components on the RSP2.
DRAM
DRAM stores routing tables, protocols, and network accounting applications and runs the Cisco IOS
software. The standard (default) RSP2 configuration is 32 MB of DRAM, with up to 128 MB available
through SIMM upgrades. DRAM is contained in up to four SIMM sockets: U21 and U33 (also called
bank 0) and U12 and U4 (also called bank 1). When upgrading DRAM, you must use SIMMs from Cisco.
(Also see the “Compatibility Requirements” section on page 12.)
Caution To prevent memory problems, DRAM SIMMS must be 3.3-volt (V) devices. Do not attempt to install
higher-voltage devices in the RSP2 SIMM sockets.
For RSP2 DRAM upgrade procedures, refer to the “Replacing and Upgrading DRAM SIMMs” section
on page 71.
NVRAM
The system configuration, software configuration register settings, and environmental monitoring logs
are contained in the 128-KB NVRAM, which is backed up with built-in lithium batteries that retain the
contents for a minimum of 5 years. When replacing an RSP2, be sure to back up your configuration to a
remote server so you can retrieve it later.
Table 1 RSP2 Memory Components
Type Size/Speed Quantity Description Location (see Figure 2)
DRAM 32-MB
1
to 128-MB
SIMMs
1. 32 MB of DRAM is the default DRAM configuration for the RSP2.
1 to 4 32-, or 64-MB SIMMs (based on DRAM required)
for main Cisco IOS image functions
Bank 0: U21 and U33
Bank 1: U12 and U4
NVRAM 128 KB 1 Nonvolatile SRAM for the system configuration
file
2
2. A system configuration file is contained in NVRAM, which allows the Cisco IOS software to control several system variables.
U18
Flash memory 8-MB SIMM 1 Contains the Cisco IOS images on the RSP2 U1
16-, or 20-, or Flash
memory card
3
3. Only Intel Series 2 Flash memory cards can be used with the RSP2.
Up to 2 Contains the Cisco IOS images on up to two Flash
memory cards
4
4. Type I, Type II, and Type III PC Cards can be used in PC Card slot 1, and Type I and Type II PC Cards can be used in slot 0.
Slot 0 and slot 1
Flash boot
ROM
5
5. The HSA feature requires boot ROM Version 11.1(2) or a later release of 11.1.
256 KB 1 Flash EPROM for the ROM monitor program
image
6
6. Downloading ROM monitor images to the Flash boot ROM device is not supported.
U30