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Home > Archive > 70-216 > May 2002 > Problem with Linksys Router + Hub when using DHCP!?
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Problem with Linksys Router + Hub when using DHCP!?
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| Hi Everyone,
This is my very first time posting message on this board, so hopefully you guys can give me some tips..!
The way I have my network setup was ...
1 Linksys 4 Port Router
3 PCs
1 Broadband Internet
I have had DHCP disable on the router,
and use one of my PC running Win2K Server to work as DHCP, DNS and Win w/o a problem.
Now, I recently bought a Linksys 4 Port Hub,
the config. is changed to
Broadband goes to Wan on router, then 2 Ports go to the regular machine, 1 port goes from the uplink to the hub, then to my win2K server, since then, I was no longer able to dhcp my clients, in fact, I just have to turn the DHCP back on, on the router, and have the 2K server DHCP Disable instead.
Anyone know what prevents the Win2K server from Assign IP to client on the router side through the uplink to the router connected clients?
Thanks
Eddy Lau | |
| bbraunstein 2002-04-26, 7:34 am |
| It sounds like you need to plug your patch cable into a regular port and not the uplink port. Try that and see if that works.
I am not 100% sure, (would certainly like to know the technical answer) but I think the uplink port is only one-way communication...and that is the reason why it won't work. | |
| KScheler 2002-04-26, 1:32 pm |
| On most hubs, the uplink is there so you don't have to use a cross-over cable when conneting 2 hubs together. Why not hook the broadband to the router, hook the router to the hub, then connect the computers to the hub? That's the way I've seen it done in most cases. | |
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| Hi All,
This is sort of how I have it done, modem to Router, router to hub, except, 1 router is on one side of the room with computers hook up, where my side of room is to the hub, where the DHCP Win2KS is hook up to...!
From what I understand, the uplink is a regular port with the same effect as when us use cross-over cable. So, shouldn't it doesn't really matter if I would use the uplink port on the hub side or the router side, as long as they talk!?
Now, one thing is, I wonder if the DHCP Discover packet from the router side being able to arrive through the router build in switch to my hub, then to my DHCP Server..!? Would the Broadcast arrive since it is on the same subnet!?
Regards,
Eddy Lau | |
| Flubber6755 2002-04-27, 3:28 pm |
| Why don't you just get rid of the route and turn on the NAT Server part of your Windows 2000 Server. That is if you don't need the ports on the back of the router, and you have two NICs in your server | |
| merav21 2002-05-01, 9:44 pm |
| Well I'll admit that I really didn't understand your explanation too well, but here's a thought:
"Now, one thing is, I wonder if the DHCP Discover packet from the router side being able to arrive through the router build in switch to my hub, then to my DHCP Server..!? Would the Broadcast arrive since it is on the same subnet!? "
if it is on the same subnet there is no reason why the broadcast should not arrive. However, if there is a router separating the DHCP server and the clients, it must be BOOT-P enabled. That shouldn't be an issue though with a new router, so I don't know. |
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