DHCP on wireless access-point

Hello,

I'm trying to install a wireless access-point that comes with 4 lan slots.

When enabling the wireless card on my laptop I get connected to the AP and receive IP configuration from dhcp server on AP - everything works great.

If I connect to the AP via my hub and network cables I do not receive any IP configuration from the dhcp server. When doing ipconfig /renew I get message saying cant contact dhcp server, request was timed out or something like that.

By setting up a static ip address and using the network card I'm able to contact the AP (configure it via web interface). So there is bascially a connection between my laptop and the AP when using hub and network cables but the dhcp server doesn't seem to work. I'm using latest software for AP and also reset AP. What might cause this problem ? My guess is the access point but not sure..

Appreciate any help.

 

I would have thought it will be something perculiar to this access point rather than general behaviour. It might be a setting you've missed or a "feature ".

You'll need to post the make and model of the access point to get help I think.

 

The company is called SparkLAN Communication Inc and the model is WX-6615GT Wireless Turbo-G AP Router.

 

To me it sounds odd that a missing setting would cause this when the DHCP server is working perfectly for my wireless card (using it atm). Anyway, thanks for your reply.

 

Sorry, I don't recognise that Access Point.

It may make sense to have DHCP enabled on wireless only. Most wireless access points are added to existing networks. They rarely form the core of the network. It is therefore likely that in many cases there will be an existing DHCP server on the wired network. Having more than one DHCP server on the system causes all sorts of problems. However, as there is most like only one wireless point in an area, having it giving out IP addresses over the wireless network may be useful (though DHCP pass through would be better in my opinion).

I think your best bet will be to contact SparkLAN Communication. They appear to have a e-mail based support system. Have a look at their support pages

 

I bought a product that claimed to have dhcp support and I'd like to get full value for my money. It would be easier for my dad et al to use the network without having to manually configure the ip setup.

Do you mind explaining why a switch would work but not a hub? Wouldn't a DHCPDISCOVER / DHCPREQUEST packet sent by the laptop be re-transmited to all slots on a hub. Don't see why and switch would solve the problem.

Thanks for your reply btw.

 

Spot on. Switches and hubs will both pass DHCP and BOOTP packets.

 

I'm a little confused here. Is there 2 DHCP servers on your network? Or, did your existing network not have a DHCP server?

What subnet is the AP handing out?
Some of the newer Wireless AP/Routers have 2 DHCP servers so to speak. They have one for the wired side of the LAN and if the the Wireless side is setup for guests it will hand out addresses in diffrent subnets to keep visitors out of the existing LAN in an Commercial enviroment.

 

The latter, existing network did not have a DHCP server.

I believe the AP was using IP 192.168.1.1 and subnet 255.255.255.0 and giving out ip's from 192.168.1.100 and upwards.

Will have another look at this problem this weekend.

 

Hi
just try to make a firmware upgrade, even if the firmware installed is already the newest version, install it again. It might be a problem with your access point's software, you wouldn't be the first.
Hope it helps

 

The AP is only recognizing DHCP requests from the wireless connection, not the LAN connection. As mentioned, call support for the manufacturer. Also, check in the configuration settings for enabling DHCP on both.

Switch over hub will not make any difference.

DRD

 

I'm having a very similar problem.

Here's the setup:

Windows Server 2003 is handling DHCP and there is a wireless access point connected to the main network switch.

Via wireless, if I try to obtain an IP automatically (or renew it via command line), then I get a message saying that a DHCP server could not be found. However, if I manually set the IP address and point DNS to the server, then I can access the internet, so I know there's a working connection. In other words, DHCP does not work through the wireless access point.

Can anyone help?

Keith

 

This should really be in a new thread.

A switch should forward DHCP traffic, but it is possible that it is not allowing that. A solution might be to configure the wireless access point to hand out a few of the addresses in the subnet and modify the server's DHCP settings to not include those addresses. For example:

Access point: 192.168.1.240 to 192.168.1.250

Server: 192.168.1.10 to 192.168.1.239

DRD