S5820X-28S IRF2 + S5500-20TP-SI组网

按照下图组网后，IRF中两台S5820X-28S都启动后，再不接入上面的S5500-20TP-SI时，IRF工作正常。

当我将 两台S5820X-28S接入到S5500-20TP-SI后，服务器区无法正常访问到办公区网络。必须关闭一台S5820X-28S才能正常访问办公网

我不是很清楚为什么会出现这样的情况。求根叔帮忙判断下这样的组网首先是否有问题，再次帮忙看下配置哪里不对？

S5820X-28S关键配置信息：

irf mac-address persistent always

irf auto-update enable undo

irf link-delay

stp enable stp

region-configuration

region-name 80f62e49dfd7

active region-configuration

interface Bridge-Aggregation24

  description 上联至 A2-H3C-S5500-BAGG2

  port link-type trunk

  undo port trunk permit vlan 1

  port trunk permit vlan 2 to 4094

  link-aggregation mode dynamic

  mad enable

interface Vlan-interface98

  description 核心交换上联网络

   ip address 10.111.198.2 255.255.255.252

interface Ten-GigabitEthernet1/0/23

  description IRF-Port 1/2

ip route-static 0.0.0.0 0.0.0.0 10.111.198.1

irf-port 1/2 port group interface Ten-GigabitEthernet1/0/23

  mode enhanced

S5500-20TP-SI关键配置：

interface Bridge-Aggregation2

  description Down Link To B1/2-H3C-S5820X-28S-BAGG24

  port link-type trunk

   undo port trunk permit vlan 1

  port trunk permit vlan 2 to 4094

  link-aggregation mode dynamic