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Quidway NetEngine80
Configuration Guide - Basic Configurations
1 NE80 Core Router Overview
Issue 04 (2009-12-20)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1-3
z
POS LPU
z
cPOS LPU
z
ATM LPU
z
RPR LPU
z
E1 LPU
POS = Packet Over SONET/SDH
cPOS = channelized POS
ATM = Asynchronous Transfer Mode
RPR = Resilient Packet Ring
LPUF
LPUFs are LPUs whose PIM cards can be replaced. Each LPUF can hold two PIM cards. The
following PIM cards are supported:
z
10/100M auto-sensing Ethernet electrical interface PIM card
z
Gigabit Ethernet optical interface PIM PIC card
z
E1/T1 interface PIM card
z
E3 interface PIM card
z
T3 interface PIM card
Service Board
The NE80 provides Network Address Translation (NAT) service board. The NAT board
features large capacity and high performance, and can support the translation between private
and public network addresses. The NAT board is used to solve the problems like the shortage
of public network addresses and ensure the network security on the Internet.
For more information about the NE80 hardware system, refer to the
Quidway NetEngiNE80
Core Router Installation Manual
.
1.1.3 Software Architecture
The software system of the NE80 adopts the architecture of two physically independent
functional units, namely route control and packet forwarding. The architecture can improve
the stability and the processing performance of the system.
The system software consists of the following five parts: Network Management System
(NMS), Routing Process System (RPS), Forwarding Support Unit (FSU), Express Forwarding
Unit (EFU), Driver (DRV), and the switch fabric monitoring module running on the MPU
manages the MPU and monitors its operation.
DRV modules are distributed in the RPS, FSU and EFU for driving the hardware of the MPU
and the LPU.
Figure 1-1
takes the NE80-8 for example to illustrate the NE80 software
architecture.