H3c s5110-28P-PWR交换机接口频繁up down怎么解决

H3c s5110-28P-PWR交换机查看日志接口频繁up down。检查未发现有环路

%May 7 14:24:52:760 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/1 link status is DOWN. %May 7 14:24:53:071 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/3 link status is UP. %May 7 14:25:03:325 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/1 link status is UP. %May 7 14:25:26:032 2000 2F5110-POE LLDP/6/LLDP_CREATE_NEIGHBOR: New neighbor created on Port GigabitEthernet1/0/3 (IfIndex 18882560), Chassis ID is 74ea-cb87-db00, Port ID is GigabitEthernet1/0/1. %May 7 14:25:36:035 2000 2F5110-POE LLDP/6/LLDP_CREATE_NEIGHBOR: New neighbor created on Port GigabitEthernet1/0/1 (IfIndex 18874368), Chassis ID is 74ea-cb87-c480, Port ID is GigabitEthernet1/0/1. %May 7 14:25:44:197 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/9 link status is DOWN. %May 7 14:25:50:168 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/9 link status is UP. %May 7 14:26:31:065 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/13 link status is UP. %May 7 14:26:31:945 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/13 link status is DOWN. %May 7 14:26:43:075 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/9 link status is DOWN. %May 7 14:26:45:295 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/9 link status is UP. %May 7 14:27:18:043 2000 2F5110-POE LLDP/6/LLDP_CREATE_NEIGHBOR: New neighbor created on Port GigabitEthernet1/0/9 (IfIndex 18907136), Chassis ID is 74ea-cb88-6140, Port ID is GigabitEthernet1/0/1. %May 7 14:28:51:573 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/10 link status is DOWN. %May 7 14:28:57:633 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/10 link status is UP. %May 7 14:29:50:652 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/10 link status is DOWN. %May 7 14:29:52:896 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/10 link status is UP. %May 7 14:30:25:116 2000 2F5110-POE LLDP/6/LLDP_CREATE_NEIGHBOR: New neighbor created on Port GigabitEthernet1/0/10 (IfIndex 18911232), Chassis ID is 74ea-cb88-11a0, Port ID is GigabitEthernet1/0/1. %May 7 14:30:44:630 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/4 link status is DOWN. %May 7 14:30:48:325 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/12 link status is DOWN. %May 7 14:30:50:763 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/4 link status is UP. %May 7 14:30:54:375 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/12 link status is UP. %May 7 14:31:43:515 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/4 link status is DOWN. %May 7 14:31:45:751 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/4 link status is UP. %May 7 14:31:47:668 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/12 link status is DOWN. %May 7 14:31:49:920 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/12 link status is UP. %May 7 14:32:03:715 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/12 link status is DOWN. %May 7 14:32:09:156 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/12 link status is UP. %May 7 14:32:18:132 2000 2F5110-POE LLDP/6/LLDP_CREATE_NEIGHBOR: New neighbor created on Port GigabitEthernet1/0/4 (IfIndex 18886656), Chassis ID is 74ea-cb88-64c0, Port ID is GigabitEthernet1/0/1. %May 7 14:32:45:235 2000 2F5110-POE IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/7 link status is DOWN.