Frst we must be conform what type of network are we planning .for the very simple network we have the intension to lower the cost ,where conjection and security has also little to be considered so we can use hubs instead of switch .But for the complex network we must keep in mind the connection,security,concern,and cost may not be considered..
Below figure give the components required for the good network
As mentioned in the previous objective, routers, bridges, and switches are used in an inter-network.
Figure 1-3
shows how a network would look with all these internetwork devices in
place. Remember that the router will not only break up broadcast domains
for every LAN interface, but it will also break up collision domains.
figure: Internetworking devices
When you looked at Figure
you may have noticed that the router is at center stage and that it
connects each physical network together. This type of layout is
necessary because of the older technologies involved—bridges and hubs.
On the top internetwork in Figure
you’ll notice that a bridge was used to connect the hubs to a router.
The bridge breaks up collision domains, but all the hosts connected to
both hubs are still crammed into the same broadcast domain. Also, the
bridge created only two collision domains, so each device connected to a
hub is in the same collision domain as every other device connected to
that same hub. This is still better than having one collision domain for
all hosts.
No comments:
Post a Comment