Switch Ethernet Layer 3
Network equipment with Layer 3 functions not only enables cross-network data transmission, but also separates networks into several segments to achieve a higher level of security. As a result, Layer 3 has been increasingly adopted in industrial applications.
Apart from static routing, these models will automatically forward packets to the destination device even if it is not on the same network and then update their MAC tables through the learning ability. Since the Layer 3 function can communicate with different network segments, each LAN will remain separated when no cross-network transmission is required, hence higher security and bandwidth usage efficiency. With the ability to connect different LANs together when necessary, the devices can provide excellent network scalability.The Layer 3 switches also support RIP (Routing Information Protocol) and VRRP (Virtual Router Redundancy Protocol), the former can locate the shortest transmission route for packets and the latter can provide routing redundancy. When the primary Layer 3 switch fails, the connection will automatically switch to a back-up L3 switch to ensure uninterrupted transmission. The characteristic of high availability are especially ideal for industrial applications such as IP surveillance, factory automation, and rolling stock where continued connectivity is a must.