Modem that distributes dynamic ips?

Talrinys

Talrinys

Talrinys

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Joined
14 Feb 2007
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2,479
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Denmark
So i recently made a stupid decision to get a Netgar GS605 switch to replace what i thought was my previous switch. Of course turned out that the old switch wasn't a switch, but a hub, which includes functionality to distribute IP's, which it does very well with 5 dynamic IP's from the ISP.
Now i really want to get this new switch working, as i want to use gigabit speeds and jumbo frames, but i'm not gonna touch a router with NAT.
Reason simply being that NAT doesn't work nicely, a pretty well known fact for anyone who has ever lived with a brother/sister who wanted to use the same game online, on the same server.
So is there anything at all i can do? I had it on my wireless router just to check it out, and it just passed on whatever IP's my router gave it, so i assume i need something before the switch to distribute IP's.
I was looking at this - http://www.overclockers.co.uk/showproduct.php?prodid=NW-059-LS&groupid=46&catid=115&subcat=418
It has an option to disable NAT, and it can function as a DHCP server, would it work?
 
Well beside for the NAT issue i lost 6 mbit/s speed setting my switch up after my router, and that is absolutely unacceptable.

Yes i am indeed receiving multiple dynamic IP's, 6 of them, which yes is extremely unusual in many countries, but quite usual in Denmark, so i find it quite annoying that no equipment is made to support this.

I was replacing a Unex hub, i do not have the number or anything on it, all i know is that it had an uplink port and 5 fast ethernet ports, plugged the ADSL modem into the uplink and the computers into the ethernets and that worked perfectly, giving each of the computers one of the IP's.

I'm running ADSL2 20/1mbit using TDC(danish monopoly telecommunications company).
 
Oh yes, by the way :) :
Never had a router for anything else than wireless, don't believe in the performance hit simply, my wireless router currently sits after the hub, and supplies only my laptop, nothing else.
 
No not yet, and i'll try putting the switch after the hub, but the hub only supports fast ethernet and i was gonna try to get everything to GigE since 100mbit speeds will be arriving here very soon.

I can't say if it's a router, i really doubt it since there is no administration functionality at all, and it says hub on the back, i'll find the product number later. Still counting on the linksys modem though, as long as it would be able to distribute the IP's i'd be fine?
 
Exactly, that's the problem, plus the fact that i lost 6mbit/sec by going through a router, which is another reason for trying to keep this setup.
Yep they simply don't get an IP if i plug the switch directly into the modem, which i suppose is what i should expect.
I haven't tried assigning my IP's, but it probably wouldn't work as IP's are switched around all the time here, and i have to set it up on 4 computers, i'm not at home a lot of the time, and i'd have to make my brother, and parents try to troubleshoot it over the phone, not nice :P

The reason i'm looking at the linksys modem specifically is that it has a DHCP server, and could work that way through the switch probably?
 
That makes a lot of sense, seeing as if i do an ipconfig lookup the DHCP server is listed as (with the X'es being my current ip) x.x.x.1, so the bridge theory is probably correct. I have went back to the hub for now, and will probably just sell the switch and call my ISP when the time for GigE comes, too bad.
The explanation for the switch/hub thing i suppose, is simply that my hub has a port called "uplink" where i connect the modem, which my switch does not.
 
Alright, but i have experienced this before setting up a network for a friend a couple of years ago where we had to bypass NAT so both he and his brother could play CS on the same server, ended up having to order another hub from the ISP, another one than i have but also one that seems as it has some difference to regular switches. Gonna go find the exact name of the hub, brb :)
 
Teal i think you're absolutely right, i'm using an Efficient Speedstream 5100 router and it does indeed appear to be bridged and firmware-locked by most ISPs that use it, to provide exactly the functionality which i'm enjoying.
So i suppose that i do have a router, and the Nexswitch after that, which puzzles me even more, the Netgear DG605 should work perfectly too then?
 
Indeed, i did leave it running, and that definitely ****** it up, but to remedy that i tried removing the router from the equation simply, that didn't work at all, just wouldn't get the computers an IP.

Language!
Tolien
 
Sorry i got suspended temporarily for some bad language, i apologize for not being able to get back to you for that reason.

Basically Teal you gave me some great pointers, and tried basically shutting down the whole network, including computers, to make sure that absolutely everything cached would be gone. Then i disconnected the wireless router from the new switch, which i had done before with no luck, but this time it worked perfectly. Been running Gig-E ethernet with my preferred setup ever since now :) Thanks a lot for your help, i owe you a big favor :)
Also read & learned a lot about bridged routing, which is indeed what i have, and which i really like. Again thanks a lot :D
 
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