cameras go online and offline repeatedly

Steps:

1. Check whether the cameras are powered off.
   • If yes, power on the cameras and check whether the fault is rectified.

     If the fault is rectified, no further action is required. If the fault persists, go to step2.

   • If no, go to the next step.
2. On the PC client, ping the IP addresses of two or three cameras to check whether the network between the cameras and the platform is properly connected.
   • If yes, go to step3.
   • If no, locate and rectify the network fault and check whether the fault is rectified.

     If the fault is rectified, no further action is required. If the fault persists, go to the next step.

3. Restart the DCG.

   If the fault persists, go to the next step.

4. Check the running status of the SCU.
5. Run the ps -ef | grep ivs_scu command to check whether the SCU process is running.
   • If no, restart the SCU and check whether the fault is rectified.

     If the fault is rectified, no further action is required. If the fault persists, go to step5.

   • If yes, go to the next step.
6. Run the lsof -i:9905 command to check whether the network between the SCU and the DCG is properly connected.
   If the following information is displayed, the network is properly connected:

   COMMAND   PID USER   FD   TYPE    DEVICE SIZE/OFF NODE NAME
   ivs_scu  1941 root   34u  IPv4 189276243      0t0  TCP localhost:53379->localhost:9905 (ESTABLISHED)
   ivs_dcg 16560 root    5u  IPv4 114438845      0t0  TCP *:9905 (LISTEN)
   ivs_dcg 16560 root   19u  IPv4 189276246      0t0  TCP localhost:9905->localhost:53379 (ESTABLISHED)

   • If no, refer to restart the SCU and check whether the fault is rectified.

     If the fault is rectified, no further action is required. If the fault persists, go to step5.

   • If yes, go to the next step.
7. Run the lsof -i:9934 command to check whether the network between the SCU and the SMU is properly connected.
   If the following information is displayed, the network is properly connected:

   COMMAND  PID   USER   FD   TYPE    DEVICE SIZE/OFF NODE NAME
   ivs_scu 1941   root   36u  IPv4 189276247      0t0  TCP ivs:50842->ivs:9934 (ESTABLISHED)
   java    5373 ivspcg  202u  IPv6     45781      0t0  TCP ivs:58249->ivs:9934 (ESTABLISHED)
   ivs_smu 5607 ivssmu   66u  IPv4     34406      0t0  TCP *:9934 (LISTEN)
   ivs_smu 5607 ivssmu   68u  IPv4 189276248      0t0  TCP ivs:9934->ivs:50842 (ESTABLISHED)
   ivs_smu 5607 ivssmu   93u  IPv4     45786      0t0  TCP ivs:9934->ivs:58249 (ESTABLISHED)

   NOTE:

   If the network between the SCU and the DCG or SMU is abnormal, obtain logs of the SCU and the DCG or SMU while the SCU is being restarted. If the debug log function is enabled, obtain debug logs. Otherwise, obtain run logs.

   • If no, refer to restart the SCU and check whether the fault is rectified.

     If the fault is rectified, no further action is required. If the fault persists, go to step5.

   • If yes, go to the next step.