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To use good ruijie enterprise switches

Good ruijie networks switches

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To use good ruijie enterprise switches

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  1. To use good ruijie enterprise switches Principle overview: The switch port has three working modes, Access, Hybrid, and Trunk. Access-type ports can only belong to 1 VLAN, and are generally used to connect computers; Trunk type ports can allow multiple VLANs to pass through, can receive and send multiple VLAN messages, and are generally used for ports connected between enterprise network switches; Ports of the Hybrid type can allow multiple VLANs to pass through, can receive and send packets of multiple VLANs, can be used for connecting between enterprise network switches, and can also be used for connecting users' computers. When receiving data, the Hybrid port and the Trunk port have the same processing method, the only difference is when sending data: the Hybrid port can allow the packets of multiple VLANs to be sent without tags, while the Trunk port only allows the packets of the default VLAN. No tag is added to the message when it is sent. Acess port receives message: When a message is received, judge whether there is VLAN information: if not, add the PVID of the port, and switch and forward, if there is, discard it directly (default) The trunk port receives messages: Receive a message, judge whether there is VLAN information: if not, mark the PVID of the port, and switch and forward, if there is, judge whether the trunk port allows the data of the VLAN to enter: if it is allowed, the message carries the original VLAN tag for forwarding Forward, otherwise discard the packet. The hybrid port receives packets: After receiving a message, judge whether there is VLAN information: if not, mark the PVID of the port, and switch and forward, if so,

  2. judge whether the hybrid port allows the data of the VLAN to enter: if yes, forward it, otherwise discard it. Remarks: PVID is Port-base Vlan ID, that is, the virtual LAN ID number of the port, which is related to the VLAN TAG mark when the port sends and receives data frames. Acess port sends message: Strip the VLAN information of the message and send it directly The trunk port sends a message: Compare the PVID of the port with the VLAN information of the message to be sent. If the two are equal, strip the VLAN information and send it again. Otherwise, the message will be forwarded with the original VLAN tag. The hybrid port sends a message: Determine the attributes of the VLAN on this port If it is untag, strip the VLAN information and send it again. If it is tag, compare the PVID of the port with the VLAN information of the message to be sent. If the two are equal, strip the VLAN information and send it again. Otherwise, the message will carry the original VLAN tag. to retweet. The difference between a layer 2 switch and a layer 3 switch Layer 2 enterprise network switches are used in small local area networks. Needless to say, in a small local area network, broadcast packets have little effect. The fast switching function, multiple access ports and low price of a layer 2 switch provide a perfect solution for small network users. The advantage of the three-layer switch is that it has rich interface types, supports powerful three-layer functions, and has strong routing capabilities. It is suitable for routing between large networks. Its advantages lie in choosing the best route, load sharing, link backup and other networks. Exchanging routing information and other functions that routers have. The most important function of the three-layer switch is to speed up the fast forwarding of data within the large local area network, and

  3. the addition of the routing function also serves this purpose. If a large network is divided into small local area networks according to factors such as departments and regions, this will lead to a large number of Internet accesses, and the simple use of Layer 2 enterprise network switches cannot achieve Internet access; such as the simple use of routers, due to the limited number of interfaces and The slow routing and forwarding speed will limit the speed and network scale of the network, so it is the first choice to use a layer-3 switch with routing function and fast forwarding. Generally speaking, in a network that requires fast forwarding and response due to large data traffic on the internal network, if all Layer 3 enterprise network switches do this work, the burden on the Layer 3 switches will be too heavy, and the response speed will be affected. It is a good networking strategy to use routers to make full use of the advantages of different devices. Of course, the premise is that the customer's pockets are big, otherwise the next best thing is to let the three-layer switch also serve as Internet interconnection.

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