Main Processing Unit - H3C S12500 Installation Instructions Manual

Table 1-5 Description of fan indicators
Indicator
RUN
ALM
Figure 1-8 shows the ventilation inside the S12518 chassis. The ventilation inside the S12508 chassis
is similar.
Figure 1-8 Ventilation inside the chassis

Main Processing Unit

Specifications
As the core of an S12500 switch, a main processing unit (MPU) implements the following functions:
Calculating routes and maintaining forwarding tables.
Providing system configuration and monitoring functions to monitor other interface boards and
switching fabric modules, and upgrade and reset interface board software.
Providing the maintenance bus (Mbus) system to deliver effective power management.
Supporting the fast fault detection and restoration (FFDR) function.
Supporting active/standby switchover with two MPUs installed.
Color
Off
Green
Blinking
Off
Red
Blinking
1-9
Status
The fan tray fails.
The fan tray is operating normally.
The fan tray is in a normal state.
The fan tray is faulty.
Description