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join:2009-03-28
| multiple routers, subnets, and file sharing...DHCP/WINS/DNS
Hello! I am studying for a network+ exam and I had some theoretical questions. I've got a good grip on all of these things and what they do, and really how to use them, but the practical applications/scenarios of them in the book I am reading is a little bit on the short side. I think I have some more advanced scenario questions than I can readily find answers to. So, here goes. I understand the difference between routers and bridges (layer 3 vs. layer 2) bridges filter and forward broadcasts, routers don't, they filter and forward and route based on ip address traffic and not mac address traffic (say netbios), but I do understand that windows often runs netBT (netbios over ip) which can make it through routers.
Okay, so there's a setup of what I've learned, but when it comes to practical networking, is it possible to file-share with windows between subnets? What I've come to is that, I think you can, if they share the same gateway, you just wouldn't be able to browse other computers, you would have to use the ip addresses to get to each computer (because of lack of broadcasting making it over to the different subnets) unless you had a dns or wins server set up with relays in each subnet (except the one those servers were in) to keep up with host names to resolve to each of the ip addresses. Okay, that's what I think and please correct me if I am wrong. Or, if you can, explain why I am right! I really don't get it, that's just what I think for now. If that is right, could you also answer a couple of other questions that are stumping me?
What if each of these subnets had their own gateway. Could you still ping or file share (at least based on ip address) between computers on different subnets? Would anything be different if they were all using different gateways instead the same one?
Okay, as an example:
What if each of these subnets weren't subnetted using static ip's/subnet masks and instead each had a router with DHCP handing out their addresses (and each of these routers was on a different subnet). They could either use one of those routers as a gateway or each use their own, right? Okay, now that's confusing so how about a concrete example. Say you have a two tier configuration with three routers. A triangle. Router #1 at the top (with the subnet 192.168.0.1) with router #2 (192.168.1.1) and router #3 (192.168.2.1) connected underneath it. What services would be available between subnets? (This would be if you used an ip address to access the other computers directly or if you had a DNS/WINS server to take the place of broadcasts for resolving host names) Could a computer plugged into router #2 share files with computers plugged into router #1 and router #3? Could they ping each other across those subnets? Would this change if the computers, regardless of subnet, all used router #1 as the gateway (192.168.0.1) vs. if they used their individual routers as their gateway (which those routers probably are set to use router #1 as their wan gateway since it is at the top...) yet, would this make any difference? Thank you very much for anyone who goes out of their way to try to explain this! And please, anyone who knows more about this feel free to take it and run with it, even in all kinds of different directions as it may lead. Thank you all very much. | |
Anav
Sarcastic Llama? Naw, Just Acerbic
Premium
join:2001-07-16
Dartmouth, NS | Must be some answers out there somewhere.........
»www.wilsonmar.com/1tcpaddr.htm | |
diggs
join:2009-03-28
| That's nice. It's like everything I've been reading, condensed and in one place still with all of the details intact. I'll go over it and see if I can get more comfortable. If anyone else still wants to take on the question on the specific scenarios mentioned, please go for it. and Anav, thank you for finding this for me! | |
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