Cisco 7500 SERIES ROUTE SWITCH PROCESSOR 16 Specification Guide
5
Route Switch Processor (RSP16) Installation and Configuration Guide
OL-4661-03
Product Description
CPU
The CPU used in the RSP16 is a 400-MHz R7000A with 256-KB Layer 2 cache.
Memory Components
shows the memory components on the RSP16.
DRAM
DRAM stores routing tables, protocols, and network accounting applications and runs the Cisco IOS
software. The standard (default) RSP16 configuration is 128 MB of DRAM, with up to 1 GB available
through DIMM upgrades. DRAM is contained in up to two DIMM sockets: U130 (also called bank 0)
and U180 (also called bank 1). When upgrading DRAM, you must use DIMMs from Cisco. (Also see
the
software. The standard (default) RSP16 configuration is 128 MB of DRAM, with up to 1 GB available
through DIMM upgrades. DRAM is contained in up to two DIMM sockets: U130 (also called bank 0)
and U180 (also called bank 1). When upgrading DRAM, you must use DIMMs from Cisco. (Also see
the
Caution
To prevent memory problems, DRAM DIMMS must be 3.3-volt (V) devices. Do not attempt to install
higher-voltage devices in the RSP16 DIMM sockets.
higher-voltage devices in the RSP16 DIMM sockets.
SRAM
SRAM provides packet buffering and CPU cache memory functions. The standard RSP16 configuration
is 8 MB of SRAM for packet buffering and 2 MB of tertiary (L3) CPU cache memory.
is 8 MB of SRAM for packet buffering and 2 MB of tertiary (L3) CPU cache memory.
Table 1
RSP16 Memory Components
Type
Size
Quantity
Description
Location (See
.)
DRAM
128-MB
1
to
512-MB DIMMs
1.
128 MB of DRAM is the default DRAM configuration for the RSP16.
1 or 2
128-, 256-, or 516-MB DIMMs
2
(based on DRAM
required) for main Cisco IOS image functions
2.
Do not mix memory sizes. If installing 2 DIMMs, both DIMMs must be the same size. If your router includes redundant RSPs, the RSPs should have the
same memory size.
same memory size.
U130, or U130
and U180
and U180
SRAM
3
3.
SRAM is not user-configurable or field-upgradable.
8 MB (fixed)
–
SRAM for packet buffering functions (MEMD)
–
2 MB (fixed)
–
SRAM for tertiary (L3) CPU cache memory functions
–
NVRAM
2 MB
1
Nonvolatile SRAM for the system configuration file
4
4.
A system configuration file is contained in NVRAM, which allows the Cisco IOS software to control several system variables.
U5
Flash memory
16-MB SIMM
5
5.
This 16-MB SIMM Flash memory is not supported on the RSP2, RSP4/4+, or RSP8.
1
Contains the Cisco IOS images on the RSP16
U1
48-MB, 64-MB
6
,
or 128-MB Flash
Disk
Disk
6.
A 64-MB Flash Disk is the default shipping configuration for the RSP16 product.
Up to 2
Contains the Cisco IOS images on up to two Flash Disks Slot 0, or slot 0
and slot 1
Flash boot ROM 512KB
1
Flash EPROM for the ROM monitor program image
U7