msr56-60接口板卡阶段性识别不到

检查日志，有过板卡加载不到和恢复的信息，但最后一次没有恢复

%Feb 11 08:24:56:434 2020 Router-4 OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor 172.16.200.25(GigabitEthernet2/1/22) changed from FULL to DOWN. 

%Feb 11 08:25:00:169 2020 Router-4 DEV/3/BOARD_REMOVED: Board was removed from slot 2, type is SPU-200. 

%Feb 11 08:25:01:920 2020 Router-4 DEV/5/BOARD_REBOOT: Board is rebooting on slot 2. 

%Feb 11 08:25:05:923 2020 Router-4 DEV/5/BOARD_REBOOT: Board is rebooting on slot 2. 

%Feb 11 08:25:15:658 2020 Router-4 DEV/4/BOARD_LOADING: Board in slot 2 is loading software images. 

%Feb 11 08:25:22:745 2020 Router-4 DEV/5/LOAD_FINISHED: Board in slot 2 has finished loading software images. %Feb 11 08:25:44:969 2020 Router-4 DEV/2/BOARD_STATE_FAULT: Board state changed to Fault on slot 2, type is unknown. 

%Feb 11 08:25:45:194 2020 Router-4 DEV/5/BOARD_STATE_NORMAL: Board state changed to Normal on slot 2, type is SPU-200. %Feb 11 08:25:58:796 2020 Router-4 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet2/1/21 changed to up. 

%Feb 11 08:25:58:797 2020 Router-4 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet2/1/21 changed to up. 

%Feb 11 08:25:58:964 2020 Router-4 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet2/1/22 changed to up. 

%Feb 11 08:25:58:964 2020 Router-4 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet2/1/22 changed to up.

最后一次接口板识别不到，没有恢复，日志中提示，配置中接口消失

%Feb 19 04:27:54:234 2020 Router-4 DEV/4/BOARD_LOADING: Board in slot 2 is loading software images. 

%Feb 19 04:28:01:321 2020 Router-4 DEV/5/LOAD_FINISHED: Board in slot 2 has finished loading software images. 

%Feb 19 04:28:14:570 2020 Router-4 DEV/3/BOARD_REMOVED: Board was removed from slot 2, type is SPU-200.

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