交换机链路聚合问题

核心两台7506E做了堆叠，接入也是两台7506E做了堆叠，交叉上联，上联口都在一个聚合组，服务器两个网卡，连接在两个交换机的相同编号的端口上（两个端口在一个聚合组），现在问题是，服务器插一个网线能通（正常通信不丢包），插两个网线时通时不通，丢包严重，上联口的聚合口有时提示拓扑改变，聚合模式用动态和静态都试过了，结果一样，好像mac地址飘移了，这是接入交换机的mac地址表：

[FBSASW1]dis mac-address

MAC Address      VLAN ID    State            Port/Nickname            Aging

2c97-b1c7-1fd4   20         Learned          BAGG10                   Y

2c97-b1c7-200c   20         Learned          BAGG5                    Y

2c97-b1c7-25b5   20         Learned          BAGG14                   Y

2c97-b1c7-9bd1   20         Learned          BAGG16                   Y

2c97-b1c7-9e9b   20         Learned          BAGG4                    Y

2c97-b1c7-9ee1   20         Learned          BAGG19                   Y

2c97-b1c7-9e38   20         Learned          BAGG43                   Y

7057-bf28-1001   20         Learned          BAGG43                   Y

7057-bf28-1001   30         Learned          BAGG43                   Y

346b-5b5f-74d0   1000       Learned          BAGG43                   Y

346b-5b5f-75b0   1000       Learned          BAGG43                   Y

7057-bf28-1001   1000       Learned          BAGG43                   Y

7057-bfd2-1eb0   1000       Learned          BAGG43                   Y

7057-bfd2-7a18   1000       Learned          BAGG43                   Y

7485-c4e2-e201   1000       Learned          BAGG43                   Y

2c97-b1c7-2705   20         Learned          BAGG20                   Y

[FBSASW1]

[FBSASW1]dis arp

  Type: S-Static   D-Dynamic   O-Openflow   R-Rule   M-Multiport  I-Invalid

IP address      MAC address    VLAN/VSI   Interface                Aging Type

20.76.188.1     7057-bf28-1001 1000       BAGG43                   1031  D   

20.76.188.2     346b-5b5f-75b0 1000       BAGG43                   1028  D   

20.76.188.4     7485-c4e2-e201 1000       BAGG43                   1041  D   

20.76.188.5     7057-bfd2-1eb0 1000       BAGG43                   1027  D   

20.76.188.6     346b-5b5f-74d0 1000       BAGG43                   1027  D   

20.76.188.7     7057-bfd2-7a18 1000       BAGG43                   1031  D   

[FBSASW1]

7057-bf28-1001 这个mac地址不知道为什么会这样， 20.76.188.1是核心交换机（上联）的管理地址，核心上显示该接口地址：

<HXCSW1>dis int vlan 1000

Internet address: 20.76.188.1/24 (primary)

IP packet frame type: Ethernet II, hardware address: 7057-bf28-1001

IPv6 packet frame type: Ethernet II, hardware address: 7057-bf28-1001

现在问题是服务器插一根线正常，连两根线就丢包或不通，怎么解决

交换机相同型号、相同版本，版本信息：

[HXCSW1]dis version

H3C Comware Software, Version 7.1.070, Release 7585

Copyright (c) 2004-2019 New H3C Technologies Co., Ltd. All rights reserved.

H3C S7506E uptime is 0 weeks, 0 days, 1 hour, 37 minutes

Last reboot reason : USER reboot

Boot image: flash:/S7500E-CMW710-BOOT-R7585.bin

Boot image version: 7.1.070, Release 7585

  Compiled Mar 19 2019 11:00:00

System image: flash:/S7500E-CMW710-SYSTEM-R7585.bin

System image version: 7.1.070, Release 7585

  Compiled Mar 19 2019 11:00:00

Feature image(s) list:

  flash:/S7500E-CMW710-FREERADIUS-R7585.bin, version: 7.1.070

    Compiled Mar 19 2019 11:00:00

MPU(M) Chassis 1 Slot 0:

Uptime is 0 weeks,0 days,1 hour,37 minutes

BOARD TYPE:         LSQM3MPUB0

DRAM:               2048M bytes

FLASH:              1024M bytes

NVRAM:              1M bytes

PCB 1 Version:      VER.C