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5-3
Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 5 NPE-G1 Overview
NPE-G1 Description and Overview
Components
Figure 5-1 illustrates the NPE-G1 and its major components.
Figure 5-1 NPE-G1
The NPE-G1 consists of the following components:
• BCM1250 system
–
Microprocessor operates at an internal clock speed of 700 MHz.
–
Hardware logic to interconnect the processor, double data rate synchronous dynamic
random-access memory (DDR-SDRAM), lightning data transport (LDT) bus, the generic PCI
bus, and three direct-interface Gigabit Ethernet interfaces.
• Cache memory
The NPE-G1 has two levels of cache: primary and secondary cache that are internal to the
microprocessor with secondary unified cache for data and instruction.
• The NPE-G1 uses DDR-SDRAM for providing code, data, and packet storage.
• Two environmental sensors for monitoring the cooling air as it enters and leaves the chassis.
• Full-feature I/O controller functionality
66435
GIGABIT ETHERNET 0/1
RJ45 GBIC
EN
RX TX
LINK
CONSOLE AUX
GIGABIT ETHERNET 0/1
RJ45 GBIC
EN
RX TX
LINK
GIGABIT ETHERNET 0/1
RJ45 GBIC
EN
RX TX
LINK
CPU
RESET
COMPACT FLASH
POWER
ON
SLOT
ACTIVE
NETWORK PROCESSING ENGINE - G1
5
4
3
6
8
7
9
10
1
2
1 Midplane connectors 6 Boot ROM
2 Flash memory 7 NVRAM
3 Temperature sensor 8 SODIMM 2 (J4)
4 BCM1250 system 9 Temperature sensor
5 Keying post 10 SODIMM 1 (J3)