View Single Post
Old 10-24-07, 05:24 PM   #7
ricercar
fugue master
 
ricercar's Avatar
 
Join Date: Oct 2002
Location: silicon valley
Posts: 1,603
Arrow Re: Here's one for the Network Admins

Get a switch, not a hub. A hub is slower than a switch. A switch is more efficient than a hub. A switch lives on an entirely different layer of the OSI stack than a hub.

A hub broadcasts every packet to all connections. This effectively means one device cannot talk until all other devices have stopped shouting. Packet collision errors (requiring retransmission) are common. Imagine a hub as a 4-way intersection with no stop signs. Cheap and low maintenance. Lots of traffic makes for a very bad situation.

A switch routes a packet only to the device that it is intended for. Many conversations can occur at the same time. Packets rarely collide. Imagine the switch as a competent traffic cop in this 4-way intersection. Traffic may have to wait for a turn, but everyone gets a fair turn.
__________________
I used to drive a Heisenberg, but whenever I'd glance at the speedometer, I'd get lost.
ricercar is offline   Reply With Quote