Analysis on the connection between the swift Router Network and the bridge

Analysis of swift Router Network Interconnection and bridge interconnection with the continuous expansion and rapid development of the network scale, the routing technology has gradually become a key part of the network technology, vrouters also become the most important network devices, making the best use of various types of network resources in various regions around the world, regardless of the use of the large network technology, FDDI technology, or ATM technology. I. Network Interconnection: connecting your network with other networks, obtaining more information from the network and publishing your own messages to the network is the main driving force for network interconnection, there are multiple network interconnection methods, among which the most commonly used are bridge interconnection and router interconnection. 2. The Network Bridge of the bridge network works on the second layer of the OSI model, that is, the link layer, to forward data frames (frames). The main purpose is to provide transparent communication between Connected Networks. (1) Bridge Forwarding is based on the source address and destination address in the data frame to determine whether a frame should be forwarded and to which port. The address in the frame is called the MAC address or hardware address, it is generally the IP address of the NIC. Www.2cto.com
(2) The purpose of a bridge is to interconnect two or more networks to provide transparent communication. Devices on the network cannot see the existence of a bridge, and communication between devices is as convenient as on an Internet. Because the bridge forwards data frames, it can only connect to the same or similar network (data frames of the same or similar structure), such as between Ethernet, Ethernet and token ring) for different types of networks (different data frame structures), such as Ethernet and X.25, the bridge is powerless. (3) bridges expand the network scale, improve network performance, and facilitate network applications. In the past, bridges were widely used. However, bridge interconnection also brings many problems: one is a broadcast storm, where the bridge does not block the broadcast messages in the network. When the network size is large (several bridges and multiple Ethernet segments ), broadcast storm may occur, and the whole network is full of broadcast information until it is completely paralyzed. (4) The second problem is that when it is connected to an external network, the bridge merges the internal and external networks into one network, both parties automatically open their network resources to the other party. This interconnection method is obviously unacceptable when connecting with external networks, the main cause of the problem is that the bridge only maximizes network communication, regardless of the information transmitted.
We believe that with the continuous development of network technology, we will eventually solve the above problems, so that we can use the network more freely and bring new changes to our lives. This article is from