Huawei CR-MPUB User manual

Quidway® NetEngine 80 Core Router Main Processing Units
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/ 1
Quidway® NetEngine 80 Core Router
Main Processing Units
Overview
The Main Processing Unit (MPU) is the core of the Quidway®NetEngine 80 core router
(abbreviated to NE80).
The NE80 has 20 slots, of which two are for MPUs. The MPU is hot-pluggable. One or two MPUs
are required for each NE80. It is recommended that two MPUs be configured to implement
redundancy backup and improve the system reliability. When the active MPU runs normally, the
standby MPU backs up status information in real time, such as configuration data, slot status, board
status, interface status, power status, fan status and protocol status.
CR-MPUB
When a severe fault occurs to the active MPU or the active MPU is manually reset, the system will
switch over to the standby MPU for running (supporting automatic switchover and manual
switchover by commands), generate alarms, log it and notify the network management
system(NMS). Switchover reason and process are recorded into the system diagnosis information
database for analysis.
The MPU implements global functions of the whole system, such as routing processing, resource
management, status monitoring and network management(NM) agent.
zProcess routing protocols, generate the forwarding table and deliver it to line cards.
zAs an agent for user operations, manage the system, monitor system performance and report
equipment running status to users according to users' operation instructions.
zMonitor and maintain running states of LPUs.
zMonitor and maintain running states of switching networks and clocks.
zMonitor running states of the fan system and power system.

Quidway® NetEngine 80 Core Router Main Processing Units
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/ 2
Specifications
Currently, the NE80 supports two types of MPUs: CR-MPUB and CR-MPUE. The difference lies in
their memory capacity. The memory capacity of the CR-MPUB is 512 MB, while that of the
CR-MPUE is 1 GB.
Both the CR-MPUB and the CR-MPUE have three external interfaces: CONSOLE port (COM port),
AUX port (auxiliary COM port) and 10/100BASE-TX Ethernet port.
Module
name Interface name Interface type Description
ETH0 port RJ45 Used to connect the NM workstation; maximum
transmission distance: 100 m; 10/100M
adaptive; with LINK and ACT indicators.
CONSOLE port RJ45 RS-232 level; used to connect the console for on-site configuration, maintenance,
management and upgrade of the system.
CR-MPUB
AUX port RJ45 RS-232 level; used to connect with Modem for remote configuration, maintenance and
management through dialing.
ETH0 port RJ45 Used to connect the NM workstation;10/100M
adaptive; maximum transmission distance: 100
m; with LINK and ACT indicators.
CONSOLE port RJ45 RS-232 level; used to connect the console for on-site configuration, maintenance,
management and upgrade of the system.
CR-MPUE
AUX port RJ45 RS-232 level; used to connect with Modem for
remote configuration, maintenance and
management through dialing.