Specifications
1-33
Cisco 7500 Series Installation and Configuration Guide
OL-5008-03 B0
Chapter 1 Cisco 7500 Series Product Overview
Route Switch Processor Overview
• Providing Simple Network Management Protocol (SNMP) management and the interface between
the console and Telnet.
• Combining all of the switched routing and high-speed switching functions that communicate with
and control the interface processors on the dual CyBus. This switching section decides the
destination of a packet and switches it accordingly.
The RSP2 supports high system availability (HSA), which is a feature in Cisco IOS Release 11.1(4) or
later, allowing two RSPs to be used in a Cisco 7507, Cisco 7507-MX, Cisco 7513, or Cisco 7513-MX
router.
Note The Cisco 7576 uses only one RSP slot per router, designated router A and router B; therefore, it does
not support HSA. The Cisco 7505 has only one RSP slot; therefore, it also does not support the HSA
feature.
The RSP2 ships as Product Numbers RSP2 and RSP2=.
The RSP2 contains most of the memory components used by the system. Table 1-7 lists the functions of
each type of memory on the RSP2.
Note For RSP2 DRAM upgrade procedures, see Chapter 9, “Replacing DRAM on the Route Switch
Processor.”
RSP4/4+—Cisco7507, Cisco 7513, and Cisco7576
The RSP4/4+ shown in Figure 1-21, is the main system processor for the Cisco 7507, Cisco 7513, and
Cisco 7576 routers. The RSP4/4+ provides switched routing and high-speed switching functions.
Table 1-7 RSP2 Memory Components
Type Size Quantity Description Location
DRAM 16 to 128 MB 2 to 4 8-, 16-, or 32-MB SIMMs (based on maximum
DRAM required)
U21 and U33
U12 and U4
SRAM 1 MB (fixed) – SRAM for packet buffering functions (MEMD) –
512 KB (fixed) – SRAM for secondary CPU cache memory
functions
–
NVRAM 128 KB 1 Nonvolatile SRAM for the system configuration
file
1
1. A system configuration file is contained in NVRAM, which allows the Cisco IOS software to control several system variables.
U18
Flash Memory:
SIMM
PC Cards
8 MB 1 Contains the Cisco IOS images on the RSP2. U1
8, 16, and 20 MB
2
2. Only Intel Series 2 Flash memory cards can be used with the RSP2.
Up to 2 Contains the Cisco IOS images on up to 2
PC Cards
Slot 0 and slot 1
Boot ROM
3
3. With the RSP2, the HSA feature requires boot ROM Version 11.1(2) or later.
256 KB 1 EPROM for the ROM monitor program U30