HUAWEI NetEngine40E Universal ServiceRouter
Hardware Description
5 NE40E-8 Chassis Overview
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5.4.2 Features and Functions
Functions
As the switching unit of the NE40E, the SFU switches service data for the system.
The SFU has a control channel to detect the voltage and temperature and provides protection
against overvoltage and overheat. The SFU also supports power-on and power-off of the
power module manually or through commands.
Reliability
The SFUs operate in 3+1 backup mode. When an SFU is faulty or replaced, the remaining
three SFUs automatically perform load balancing without interrupting services.
5.4.3 Panel
Panel Appearance
Figure 5-15 shows the appearance of the SFU panel.
Figure 5-15 Appearance of the SFU panel
Buttons and Indicators on the Panel
Table 5-10 lists the buttons and indicators on the panel of the SFU.
Table 5-10 Buttons and indicators on the panel of the SFU
An offline button. Before removing a board, press and hold the
OFL button for about six seconds till the OFL indicator is on.
If the indicator is on, you can remove the board.
If the indicator blinks once every two seconds (0.5 Hz), the SFU
is in the normal state.
If the indicator blinks twice each second (2 Hz), the SFU is in
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