怎么查看交换机是因为什么重启

dis version 看下有上次重启原因

display version看下，Reboot cause后面就是重启原因

  ===============display version===============
H3C Comware Software, Version 7.1.070, Release 6329
Copyright (c) 2004-2021 New H3C Technologies Co., Ltd. All rights reserved.
H3C S6520X-26XC-UPWR-SI uptime is 0 weeks, 0 days, 0 hours, 16 minutes
Last reboot reason : Cold reboot

Boot image: flash:/S6520SI_S6520XSI-cmw710-boot-r6329.bin
Boot image version: 7.1.070, Release 6329
Compiled Apr 14 2021 11:00:00
System image: flash:/S6520SI_S6520XSI-cmw710-system-r6329.bin
System image version: 7.1.070, Release 6329
Compiled Apr 14 2021 11:00:00
Feature image(s) list:
flash:/S6520SI_S6520XSI-cmw710-freeradius-r6329.bin, version: 7.1.070
Compiled Apr 14 2021 11:00:00
flash:/S6520SI_S6520XSI-cmw710-escan-r6329.bin, version: 7.1.070
Compiled Apr 14 2021 11:00:00


Slot 1:
Uptime is 0 weeks,0 days,0 hours,16 minutes
S6520X-26XC-UPWR-SI with 2 Processors
BOARD TYPE: S6520X-26XC-UPWR-SI
DRAM: 2048M bytes
FLASH: 1024M bytes
PCB 1 Version: VER.A
Bootrom Version: 116
CPLD 1 Version: 002
Release Version: H3C S6520X-26XC-UPWR-SI-6329
Patch Version : None
Reboot Cause : ColdReboot
[SubSlot 0] 24multi GE + UPoE
[SubSlot 1] 2*SFP Plus

部分设备能看，看不了联系400协助吧

V5：

<H3C>sys

[H3C]_h

[H3C-hidecmd]dis reserved-memory section 1 reboot

V7：

dis version，有个last reboot reson