S5048PV3-EI 终端上网异常

现有的组网环境中，两台S5048PV3-EI组成IRF做核心，下面直接接入接入交换机，在生产过程中，隔一段时间就会出现终端电脑无法联网问题，经排查发现核心上没有ARP对应表项，通过reset arp all进行重置后，终端电脑恢复正常。此问题隔一段时间就会发生一次，大概在半个月或者一个月左右。请问此异常有什么解决思路么？

H3C Comware Software, Version 7.1.070, Release 6315

Copyright (c) 2004-2020 New H3C Technologies Co., Ltd. All rights reserved.

H3C S5048PV3-EI uptime is 55 weeks, 1 day, 22 hours, 6 minutes

Last reboot reason : Cold reboot

Boot image: flash:/s5000v3_ei-cmw710-boot-r6315.bin

Boot image version: 7.1.070, Release 6315

Compiled Apr 03 2020 11:00:00

System image: flash:/s5000v3_ei-cmw710-system-r6315.bin

System image version: 7.1.070, Release 631

5 Compiled Apr 03 2020 11:00:00

Slot 1: Uptime is 47 weeks,3 days,15 hours,1 minute

S5048PV3-EI with 1 Processor BOARD TYPE: S5048PV3-EI

DRAM: 512M bytes

FLASH: 256M bytes

PCB 1 Version: VER.A

Bootrom Version: 135

CPLD 1 Version: 001

Release Version: H3C S5048PV3-EI-6315

Patch Version : None

Reboot Cause : ColdReboot

[SubSlot 0] 48GE+4SFP

 Slot 2: Uptime is 47 weeks,3 days,14 hours,32 minutes

S5048PV3-EI with 1 Processor

BOARD TYPE: S5048PV3-EI

DRAM: 512M bytes

FLASH: 256M bytes

 PCB 1 Version: VER.A

Bootrom Version: 135

CPLD 1 Version: 001

Release Version: H3C S5048PV3-EI-6315

Patch Version : None

Reboot Cause : ColdReboot [SubSlot 0] 48GE+4SFP