Before the router is popular, the network bridge is usually used to connect to the computer. That is, in typical cases, routers are used to connect geographically dispersed networks, making it possible to connect a large number of computers together. Below, we are specific to analyze the difference between the router and the Network Bridge.
The function of Net Bridge
Bridges have performed well in small-scale networks, but there have been problems in large environments. Bridge to remember all the independent computers on the network, the problem of connecting a large number of computers with a network bridge is that the bridge cannot understand the network number, so the broadcast generated anywhere on the network will be sent to every place on the Internet.
Two, the diagram is the router and the network Bridge handles the broadcast the different way
if the PC sends the broadcast packet to Net L, the broadcast packet will not spread further across the interconnect network.
three, the diagram for the router and bridge processing broadcast differences.
if the PC sends a broadcast packet, it will be sent to all network segments by the Network Bridge.
four, routers in interconnection networks and routing decisions for typical workstations or hosts
many P C machine network systems use broadcast functions extensively, which makes the large amount of available bandwidth in a bridging network consumed by broadcasting.
A typical workstation (for example, the P C machine running the current popular T-C p/i p protocol stack) can work on the T C p/i p Network before it has to do some manual configuration, at least one subnet mask, one I P address, and one default gateway must be configured.
On workstations, routing decisions configured in this manner are simple. If the destination computer is located on a different network, the packet is forwarded to the default gateway for routing and eventually to the destination; If the workstation is sending a packet packet to another computer on the same network, the packet is sent directly to the destination computer.
Five, the best way to packet routing packets
routing packet needs to remember the network topology that is constantly changing due to device or other failure reasons. Each router maintains a routing table (routing table) that lists all known network numbers and how these networks are reached. Routers also use routing protocols, which keep the routing table consistent with the frequently changing interconnection network.
