防火墙使用久了，从散热孔里看到主板上很厚的灰尘，抽空拆开用毛刷清扫
清理完成后，通电，还能正常工作
<F100-M-G>dis version
H3C Comware Platform Software
Comware Software, Version 5.20, Release 5142P08
Copyright (c) 2004-2017 New H3C Technologies Co., Ltd. All rights reserved.
H3C SecPath F100-M-G uptime is 0 weeks, 0 days, 1 hour, 42 minutes
CPU type: RMI XLS208 750MHz CPU
1024M bytes DDR2 SDRAM Memory
32M bytes Flash Memory
247M bytes CF0 Card
PCB Version:Ver.A
Logic Version: 3.0
Basic BootWare Version: 1.35
Extend BootWare Version: 1.35
[FIXED PORT] CON (Hardware)Ver.A, (Driver)1.0, (Cpld)3.0
[FIXED PORT] GE0/0 (Hardware)Ver.A, (Driver)1.0, (Cpld)3.0
[FIXED PORT] GE0/1 (Hardware)Ver.A, (Driver)1.0, (Cpld)3.0
[FIXED PORT] GE0/2 (Hardware)Ver.A, (Driver)1.0, (Cpld)3.0
[FIXED PORT] GE0/3 (Hardware)Ver.A, (Driver)1.0, (Cpld)3.0
[FIXED PORT] GE0/4 (Hardware)Ver.A, (Driver)1.0, (Cpld)3.0
[FIXED PORT] GE0/5 (Hardware)Ver.A, (Driver)1.0, (Cpld)3.0
[SUBCARD 1] The SubCard is not present
