Cisco Systems NPE-225 Manual De Usuario
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
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.
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.
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
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G I G A B I T E T H E R N E T 0 / 1
R J 4 5
G B I C
E N
R X
T X
L I N K
CONSOLE
AUX
G I G A B I T E T H E R N E T 0 / 1
R J 4 5
G B I C
E N
R X
T X
L I N K
G I G A B I T E T H E R N E T 0 / 1
R J 4 5
G B I C
E N
R X
T X
L I N K
C P U
R E S E T
C O M PA C T F L A S H
POWER
ON
S L O T
A C T I V E
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)