STP 协议端口状态不停的在切换

2/2/0/41 、2/2/0/42、2/2/0/43 都是接同一台服务器，服务器目前无权限进行检查，请大家帮分析一下端不停切换的原因，端口状态一直不能处于稳定状态。

terface GigabitEthernet2/2/0/41 changed to up. dis %Apr 4 21:44:01:390 2021 OA_NANQU-Core-ITC-IRF IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface GigabitEthernet2/2/0/43 changed to up. %Apr 4 21:44:01:393 2021 OA_NANQU-Core-ITC-IRF IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface GigabitEthernet2/2/0/43 changed to up. %Apr 4 21:44:12:696 2021 OA_NANQU-Core-ITC-IRF IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface GigabitEthernet2/2/0/43 changed to down. %Apr 4 21:44:12:712 2021 OA_NANQU-Core-ITC-IRF IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface GigabitEthernet2/2/0/43 changed to down. %Apr 4 21:44:15:186 2021 OA_NANQU-Core-ITC-IRF IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface GigabitEthernet2/2/0/43 changed to up. %Apr 4 21:44:15:191 2021 OA_NANQU-Core-ITC-IRF IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface GigabitEthernet2/2/0/43 changed to up. %Apr 4 21:44:15:417 2021 OA_NANQU-Core-ITC-IRF IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface GigabitEthernet2/2/0/42 changed to up. %Apr 4 21:44:15:417 2021 OA_NANQU-Core-ITC-IRF IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface GigabitEthernet2/2/0/42 changed to up.