Re: Collision domain & broadcast domain difference

From: Walter Roberson <roberson_at_ibd.nrc-cnrc.gc.ca>
Date: 7 Jul 2003 21:18:23 GMT

In article <849dca59.0307071248.f164d07_at_posting.google.com>, Vijaya <vcannadevula_at_hotmail.com> wrote:
:I seek some help regarding the difference between collision domain and
:broadcast domain. According to my knowledge only one computer in
:collision domain can transfer packets at a time. All the computers in
:the broadcast domain will be listening to all the packets.

Broadcast domain is the logical set of computers reachable without going through a router. For most IP broadcasts, the broadcast domain is limited to the logical IP subnet.

Collision domain is at a lower layer, and refers to the set of devices that there could be a packet collision with. The collision domain could include devices in other IP subnets. wikipedia.org says,

  A collision domain can be a single segment of Ethernet cable in   shared-media Ethernet, or a single Ethernet hub in twisted-pair   Ethernet, or even a whole network of hubs and repeaters.

-- 
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Received on Mon Jul 07 2003 - 14:18:23 PDT