Introduction To General Modules - Huawei Quidway Eudemon 200 Installation Manual

Installation Manual
Quidway Eudemon200 Firewall

1.4 Introduction to General Modules

The general modules of the Eudemon200 firewall include RPU, PSU (PWR), FAN, and
interface module, which will be described in the following subsections.
1.4.1 RPU
I. Functions
As the core component of the Eudemon200 firewall, RPU functions primarily to process
protocols, forward low-speed packets, control interfaces, and detect faults. The state
monitoring information, such as the operation states of FAN, PWR, and system can be
shown directly through the LEDs on the RPU, or reported to the Daemon for the
monitoring on the network management system. In addition, the RPU also provides the
hardware reset button RESET.
Following are the functions of the RPU.
1) Processes routing protocols
It achieves the processing of various protocols in Eudemon200 firewall software.
2) Processes the transmission and reception of interface module packet
3) Manages interface status
It implements console interface, AUX interface and fixed Ethernet interface
management, packet transmitted and received processing, and interface working
status indication.
4) Monitors power supply system status
The Eudemon200 has two power modules. RPU can initiatively query and obtain the
abnormal information about power module to implement log and alarm indication.
5) Monitors fan status
Fan is a device that ensures the normal running of the system. Abnormal information
about fan can be obtained based on an interruption alarm signal or initiative query by
CPU. CPU can perform the relevant processing based on the abnormal information
and conduct temperature control and speed adjustment.
6) Monitors system temperature
There is one temperature sensor near the CPU and another near the temperature
control module. When the system is powered on, CPU will pre-set some parameters
such as alarm point for overtemperature and control mode. When measured value on
each temperature sensor is over-high or fan is faulty, the system will send an
interruption signal to CPU. Then CPU generates alarms and controls fan speed,
meanwhile, CPU reads information such as system temperature value, fan status.
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Chapter 1 Overview