Dear hinotori,
This might be a little lengthy and forgive me if my "engrish" might not be up to par. Here it goes. But get yourself a pen and paper to make it easier to remember.
Possible Problem
1. Both your d-link & linksys share a common link. They're both routers.
Here is what you might want to add to your checklist.
Part 1
a. Check if you can connect to the internet purely by plugging in your mac to the lan port first.
b. If the answer is yes, then access your d-link configuration and check the ip adress. it should be 192.168.1.1 or something similar. Make sure the dhcp server is enabled and that's all for this part.
c. If it is, then half your problem is solved.
d. Remember your modem setup ip address.
e. Unplug your mac from the modem and proceed to Part 2
Part 2
a. Plug in your mac using your lan port to your linksys router.
b. Acess the linksys web-configuration via manual which should be 192.168.1.1 or something similar.
c. Disable your wan connection type on the main page. Do not select pppoe or anything else. Just disable it. Save your changes. Give it a minute as the router will reboot and you'll have to log on again.
d. Change your ip adress to something else than your modem ip. i.e if your modem is 192.168.1.1 then set your linksys to 192.168.1.254. Set your subnet mask to 255.255.255.0 and your Gateway to 192.168.1.1.( your d-link ip adress ). Disable your DHCP server as your modem is now your router, your linksys is purely an acess point from now on.
Save your changes and it will be another minute or so for changes to be saved. This time around, access your router to the same address as you have keyed in which is 192.168.1.254.
e. Try to access your linksys wireless with the new ip which is 192.168.1.254. Double check your settings to ensure that the items stated above is correctly entered.
f. Check your wireless tab and make sure your linksys wireless is enabled.
g. Don't worry about wireless security as of time being. Most important of all. It's the basic settings you need to get right.
h. If the settings are correct. Remove Proceed to part 3
Part 3
a. Now unplug your mac from the linksys.
b. with the same cable, connect your d-link modems lan port ( 1-4 ) to the linksys lan port. Remember it's lan to lan. Do not connect your cable from your lan to wan or vice-versa. ( i.e d-link port no 2 to linksys port no 2 ).
c. Select your airport on your mac to connect to your linksys wireless.If it's connected then proceed to part 4.
Part 4.
a. Go to your apple System preferences, ( Click on the apple logo on the top left corner and you can see System Preferences )
b. Click on Network and proceed to your airport. It should be green and " connected ". Then click on advance and the tcpip tab. Your iPv4 Adress should be 192.168.1.XXX. Subnet mask will be 255.255.255.0.And your Router tab should be 192.168.1.1 ( which is your d-link ). IpV6 should be on auto and grayed out.
c. Open your browser and just go to any site. i,e www.google.com and keep your fingers crossed. You should be able to surf.
d. Then proceed to Part 5.
Part 5.
a. Now it would be safe to change your wireless security settings. Access your linksys via 192.168.1.254 and you should be able to change your security settings that suits your need. I would recommend WPA Personal / Tkip / so you can key in your password to secure it from other people leaching on your dsl line.
b. Save your settings and now you can surf in peace.
c. Go to part 6
Part 6.
a. If it was successful, buy me a beer
b. If it isn't, Damm.. Let me know which part went wrong and i'll try to help you out.
Cheers
Kay
Of course there are other ways to solve this issue but I have found that in most cases, this is the best solution as most isp's in vietnam uses pppoe rfc 256 which in some cases not supported by some version of routers. Thus disabling the router function on your modem might not work.
Cheers
Kay
Not sure if this helps but you might simply want to dump the routers and buy an all in one ADSL wireless router instead of using 2. In theory there is no reason why they will not work together but as you are experiencing these problems, you might want to save time. Normally on a Linksys router you can see what machines are connected and verify that DHCP is giving out the IP address (which I am guessing is happening as you say that the Mac is connecting the network but not getting online). Check that this is happening and if not assign a static IP address to the Mac. Might also be worth having a look in the Apple Forums online for your problem. I know that mine works fine with the all in one Linksys modem we have.
Cheers,
Dermot
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