级联2台H3C交换机 用了2端口汇聚 但是经常出现网络死机，请问是什么问题？

级联2台H3C交换机 用了2端口汇聚 但是经常出现网络死机，请问是什么问题，我的配置参数如下 还有一台参数除了端口，基本一样
#
sysname CG_ZSL_S1
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super password level 3 cipher TXW@5):F%H+Q=^Q`MAF4<1!!
#
loopback-detection enable
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link-aggregation group 1 mode manual
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radius scheme system
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domain system
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local-user ***
password cipher TXW@5):F%H+Q=^Q`MAF4<1!!
service-type telnet terminal
level 3
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vlan 1
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vlan 10
description to YingYeWang_ZSL
#
vlan 20
description to GuanLiWang_ZSL
#
vlan 30
description to ATM_ZSL
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vlan 40
description to WDJK_ZSL
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interface Vlan-interface20
ip address *.*.*.* 255.255.255.192
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interface Aux1/0/0
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interface Ethernet1/0/22
broadcast-suppression 5
port access vlan 40
loopback-detection enable
#
interface Ethernet1/0/23
port link-type trunk
port trunk permit vlan all
broadcast-suppression 10
port link-aggregation group 1
#
interface Ethernet1/0/24
port link-type trunk
port trunk permit vlan all
broadcast-suppression 10
port link-aggregation group 1
#
interface NULL0
#
management-vlan 20
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ip route-static *.0.0.0 255.0.0.0 *.*.*.* preference 60
#
user-interface aux 0
authentication-mode scheme
user-interface vty 0 4
authentication-mode scheme

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