Before we can do anything with your Linksys, we need to configure your P660R-D1. Meaning that its moot to have the linksys connected when the other device is mis-configured. Meaning that the P660R-D1 is still acting as a router. So you need to disable the router features on the modem (DHCP,NAT.. etc) Its called
bridged mode ... Then connect the Linksys, with DHCP & NAT, DMZ etc...
Disconnect the linksys... and connect the modem. Then go to
Then tell me if you see anything like this
here or
here. If you do, then its a start. The first link explains setting up a DMZ host on the P660R-D1. This forwards all ports to your machine. This is used only as a test. Then from there you can configure port forwarding. From what I've seen in this device, it can be done.
Use the second link as an example of putting the P660R-D1 into bridged mode. So you can use it with the linksys.
Like what I posted earlier, you need to check if these features are available in the P660R-D1. If not,
YOU need to call your ISP, and request just a modem... or help with a firmware update on your P660R-D1 (and refer to the sites I directed you too, as a reference to features your missing). Its not hard to update firmware, or even configure a home router.
From what I've read, its possible just with the P660R-D1. If I where you I'd ditched the PPPoE P660R-D1, and get just a modem from your ISP... Or have them set the device into bridged mode.
That's what I have done. Then I connected an aftermarket router, like your Linksys and configured it.
My setup:
Quote:
ISP > MODEM > ROUTER (DHCP,NAT,DMZ ...etc) > SWITCH > GUESTS
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your going with, and the reason it doesnt work:
Quote:
ISP > MODEM+ROUTER (P660R-D1)(DHCP,NAT, 192.168.1.1) > LINKSYS (PPPoE,DHCP,NAT 192.168.1.1) > GUESTS
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What you need is if used with the Linksys, and the P660R-D1 has DHCP only:
Quote:
ISP > P660R-D1(PPPoE, PUBLIC IP, GATEWAY 10.10.1.1 DHCP 10.10.1.*) > LINKSYS (GATEWAY 10.10.1.100 - DHCP 192.168.1.*, NAT...) > GUESTS
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Disable all services on the P660R-D1 (BRIDGED MODE):
Quote:
ISP > P660R-D1(BRIDGED) > LINKSYS (PPPoE, PUBLIC IP, GATEWAY 192.168.1.1, DHCP 192.168.1.100, NAT, DMZ etc...) > GUESTS
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The last example without the Linksys:
Quote:
ISP > P660R-D1 (PPPoE, DHCP, NAT, DMZ etc...) > GUESTS
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You can see that the last two examples is way more advantageous to get the P660R-D1 configured. Its easier.
If your ISP has disabled the firmware features then call them and ask for just a modem, or ask for help to setup new firmware with the additional features needed. This feature is probably to throttle bandwidth and limit the average user. (custom firmware)
Please refer to those links I posted, and tell me what features are available on your P660R-D1, and if there anything like those links I posted. And if you can get the P660R-D1 bridged.