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The VLAN (Virtual Local Area Network) is named “Virtual LAN” in Chinese. A VLAN divides a physical LAN into multiple logical LANs, and each VLAN is a broadcast domain. Hosts in VLAN can communicate with messages through the traditional Ethernet communication mode, but between hosts in...

 For optical communication, testing the optical power is an essential step in building the optical environment. The level of optical power affects the performance of the receiving device. Too low light power will make the device impossible to identify, and too high light power will damage the dev...

Before understanding, switch VLAN isolation function, we first to understand the ethernet switch: Ethernet switch is based on Ethernet transmission data switch, Ethernet switch each port can be connected to the host, generally work in full duplex mode, can connect to the port at the same time, ma...

 Optical fiber transceiver is a flexible and effective photoelectric conversion device that plays an important role in multi-protocol photoelectric hybrid LAN. Now, in order to better detect and eliminate link faults, some optical fiber transceivers have link failover (LFP) and remote fault (FEF)...

The VLAN (Virtual Local Area Network) is named “Virtual LAN” in Chinese. A VLAN divides a physical LAN into multiple logical LANs, and each VLAN is a broadcast domain. Hosts in VLAN can communicate with messages through the traditional Ethernet communication mode, but between hosts in...

For optical communication, testing the optical power is an essential step in building the optical environment. The level of optical power affects the performance of the receiving device. Too low light power will make the device impossible to identify, and too high light power will damage the dev...