3com 5500-ei pwr Instruccion De Instalación

 

2 

Assume that Hosts B, D and E need this information. The source server establishes transmission 

channels for the devices of these users respectively. As the transmitted traffic over the network is in 

direct proportion to the number of users that receive this information, when a large number of users 

need the same information, the server must send many packets of information with the same content to 

the users. While suitable for networks with small numbers of users, or where information transmitted to 

users is significantly different, in other cases this is an inefficient use of the network, and when there is 

limited bandwidth, bottlenecks can develop in information transmission. In general, unicast is not good 

for the transmission of a great deal of the same information to multiple recipients. 

When you broadcast traffic, the system transmits information to all users on a network. Any user on the 

network can receive the information, no matter if the information is needed or not. 

 shows 

information transmission in broadcast mode.  

Figure 1-2 Information transmission in the broadcast mode 

 

 

Assume that Hosts B, D, and E need the information. The source server broadcasts this information 

through the routers, reaching the targets, but also  Hosts A and C on the network receive this 

information.  

This is an efficient way to send the same content to densely distributed users.  However, as we can see 

from the information transmission process, security and restricted use of paid services cannot be 

guaranteed. In addition, when only a small number of users on the same network need the information, 

the utilization ratio of the network resources is very low and the bandwidth resources are greatly 

wasted.  

Therefore, broadcast is disadvantageous in transmitting data to specific users, and is  more bandwidth 

intensive.