Internetworking Devices
Written on 7:12 AM by ooe
Bridge
Router
Hub: One collision domain One broadcast domain
When you looked at Figure 1.1, did you apprehension that the router is begin at centermost stage, and that it connects anniversary concrete arrangement together? We accept to use this blueprint because of the earlier technologies involved–—bridges and hubs. Once we accept alone switches in our network, things change a lot! The LAN switches would again be placed at the centermost of the arrangement apple and the routers would be begin abutting alone analytic networks together. If I’ve implemented this affectionate of setup, I’ve created basic LANs (VLANs).
On the top arrangement in Figure 1.1, you’ll apprehension that a arch was acclimated to affix the hubs to a router. The arch break up blow domains, but all the hosts affiliated to both hubs are still awash into the aforementioned advertisement domain. Also, the arch alone created two blow domains, so anniversary accessory affiliated to a hub is in the aforementioned blow area as every added accessory affiliated to that aforementioned hub. This is appealing lame, but it’s still bigger than accepting one blow area for all hosts.
Notice article else: the three hubs at the basal that are affiliated additionally affix to the router, creating one humongous blow area and one humongous advertisement domain. This makes the bridged arrangement attending abundant bigger indeed!
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