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The Camera List Obtained from the VCN3020 Platform Is Incomplete When the VCN3020 Platform Is Connected to the Kedacom Platform

Publication Date:  2019-04-24 Views:  11 Downloads:  0
Issue Description

After the VCN3020 platform is connected to the Kedacom platform as the upper-level external domain, the number of reporting points pushed by the Kedacom platform to the VCN3020 platform is incomplete. Specifically, the VCN3020 platform receives only 700+ out of 1400+ channels pushed by the Kedacom platform. The version of Huawei's VCN3020 platform is V100R002C50SPC206. The issue does not occur when the VCN3020 platform is connected to other Hikvision platforms or Uniview platform as an upper-level external domain.

Handling Process

1.     Capture packets on the VCN3020 platform to obtain the PCG log and the code of the faulty device.

Find the notify message sent. According to the device code obtained from the packet capture, the notify message is as follows: 

The VCN3020 platform cannot receive packets whose length exceeds 10,000 bytes and therefore returns a 400 bad ReQuest message. As a result, the camera list cannot be obtained. In this case, modify the push policy on the Kedacom platform of the lower-level external domain.

Suggestions

1. Currently, the VCN3020 platform cannot receive packets whose length exceeds 10,000 bytes. If the length of a packet exceeds 10,000 bytes, the packet is truncated.
2. Large packets are prone to packet loss, which causes the failure in reporting device information to the VCN3020 platform. Even if packets whose length exceeds 10,000 bytes are pushed at a time and no packet loss occurs, you cannot ensure that no packet is lost next time. Therefore, it cannot be used as a formal delivery solution.
3. The platform of the Ministry of Public Security requires that each camera send only one packet, and packets (including packets of other nodes) be pushed concurrently. Hikvision platform and Dahua platform also require that each camera send only one packet.

END