交换机收到次优BPDU

接入交换机 37口下面 误  接了个交换机，而这个误接的交换机下面环路了，日志如下：

MSTP/6/MSTP_DETECTED_TC: Instance 0's port GigabitEthernet1/0/37 detected a topology change.

MSTP/6/MSTP_DISCARDING: Instance 0's port GigabitEthernet1/0/37 has been set to discarding state.

MSTP/5/MSTP_BPDU_RECEIVE_EXPIRY: Instance 0's port Bridge-Aggregation1（上联汇聚的接口） received no BPDU within the rcvdInfoWhile interval. Information of the port aged out.

LLDP/5/LLDP_NEIGHBOR_AGE_OUT: Neighbor aged out on Port GigabitEthernet1/0/52 (IfIndex 37957632), Chassis ID is 346b-5b81-f6d4, Port ID is GigabitEthernet2/0/2.   （聚合口1的成员口和汇聚断开）

LLDP/5/LLDP_NEIGHBOR_AGE_OUT: Neighbor aged out on Port GigabitEthernet1/0/51 (IfIndex 37953536), Chassis ID is 346b-5b81-f6d4, Port ID is GigabitEthernet1/0/2.     （聚合口1的成员口和汇聚断开）

此时接入交换机的37口阻塞了，同时整个接入交换机和汇聚也不通了。

汇聚交换机日志：

%Oct 25 20:39:24:496 2019 HNZZ-XL-5F-HJ-H3C-SW-S5560X STP/4/STP_DISPUTE: Instance 0's port Bridge-Aggregation11 received an inferior BPDU from a designated port which is in forwarding or learning state.

<HNZZ-XL-5F-HJ-H3C-SW-S5560X>dis stp abnormal-port

---[Bridge-Aggregation11]---

MST ID BlockReason Time

0 Disputed 20:58:22 10/25/2019

0 Disputed 20:58:20 10/25/2019

0 Disputed 20:58:18 10/25/2019

请问：  1. 为啥接入的37口都阻塞了，已经把环路问题隔离开了，还会导致整个接入和汇聚断开，影响整个接入交换机？

            2. 可否理解成接入交换机阻塞37口没有任何意义？

            3. 接入层交换机配置loopback-detection 是否能防止这种问题？

            4. 怎样配置才能避免这样的问题？