Network system having switch transferring data

摘要

A video monitoring device has a function that receives a VLAN-ID-attached Ethernet frame transferred from an Ethernet switch, and that identifies a port to which a video cable of a monitoring camera which is a distribution source of the Ethernet frame is connected by referring to the VLAN-ID attached to the Ethernet frame.

主权项

1. A network system comprising:
one or more network devices of distribution sources; a network processor that includes a plurality of ports accepting connection to cables of the network devices of distribution sources, wherein, when data distributed from one of the network devices of distribution sources is input through one of the ports, the network processor attaches an ID corresponding to said one of the ports to the input data and transfers the ID-attached data; and a network device of distribution destination that has a function of receiving the ID-attached data transferred from the network processor and identifying, by referring to the ID attached to the received data, the port connecting to the cable of the network device of distribution source of the received data; wherein when an Ethernet frame including an IP packet is distributed and is input through one of the ports, the network processor attaches a Virtual Local Area Network Identifier (VLAN-ID) corresponding to said one of the ports to the input Ethernet frame and transfers the VLAN-ID-attached Ethernet frame, the IP packet containing data of the network device of distribution source, and the network device of distribution destination comprises a plurality of virtual input/output units that is virtually built by software,
identifies, when receiving the VLAN-ID-attached Ethernet frame transferred from the network processor, one of the virtual input/output unit corresponding to the VLAN-ID attached to the received Ethernet frame,supplies the received Ethernet frame to the identified virtual input/output unit, andperforms a process on the data contained in the IP packet of the Ethernet frame, the process corresponding to the identified virtual input/output unit.