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Home > Archive > CCNA > September 2004 > how to identify?
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| sugandhakanth 2004-09-10, 4:38 am |
| how to identify the number of broadcat domain and collision domain in hub, router, switch and bridge? | |
| dmaftei 2004-09-10, 10:18 am |
| By understanding what broadcast domains and collision domains are, and understanding how hubs, routers, switches and bridges work. | |
| perfectionist 2004-09-10, 10:20 pm |
| the CCNA book published by Sybex explained pretty well on this!!! | |
| SureshHomepage 2004-09-11, 3:20 am |
| Collision domain:
Each Layer2-switch port and the hub with its ports connected to that switch port collectively form one single collision domain.
Broadcast domain:
Each Router port and the switch/hub with their ports connected to that router port collectively form one single broadcast domain.
Example, a Router with 3 Ethernet ports forms obviously 3 broadcast domains doesn't matter how many switches/hubs you have connected.
Bridge:
Each port in an Ethernet switch forms a bridge ('Transparent bridge' in a more technical term).
IBM was the one ruling this area before Cisco. Bridges were manufactured a decade ago and now EOP exception are those monstrous Token Ring bridges still in use in some of the banking networks where they use the mainframe computers to run their banking applications.
Switch:
A 24-port switch has got 24 collision domains...and as I said above it has got 24 bridges.
Hub:
Example, if you connect a 12-port hub to one of the ports of a switch, you got all the 12 hub ports comes under one single collision domain. Hub is not an intelligent device works in the Physical layer merely amplifying the electrical signals.
Hope this would help a bit! Best of luck on your CCNA! |
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