Network gurus: help keep me from going bald! ;) |
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 Mar snarkles Cos I'm ripping my hair out over this. :P~~~ Can someone tell me where I can find a *definitive* source on what the difference is between: hub, switch, bridge, router, and gateway Particularly the differences between switches and bridges, and wtf a "gateway" is. I've been going through some news groups, Cisco/3Com/etc. sites, and reading a few RFCs and so far the differences between these devices seems to be at whatever layer of the OSI model they operate within. So far what I have is: Hub (Physical layer): Takes data coming in from one port and forwards it omto all the others Bridge (Data-link layer): Same as a hub, but can filter traffic based on destination MAC address Switch (Data-link layer): Same as bridge, but can also run each segment of the network at a different speed (i.e. one comupter running at 10Mbps doesn't affect the rest of the 100Mbps network) Router (Network layer): Filters/forwards packets based on their IP address and segment networks logically so they're each on their own subnet. Gateway: Two different views on this. Either the entrance/exit point of one network to another (which is always the term I've seen used), or a device that translates between one protocol/access method to another (like a netBEUI network might use a gateway to see an IPX/SPX network, or a gateway might allow you to connect an Ethernet network to a Token Ring network) Anyone want to throw me a bone here? :P Replies:
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