WRT54G router with D-link 300T intermittent freezes

I have a D-link 300T modem configured for PPoA connected to WRT54G router running firmware level 2.04.4 installed. The only way I can get tghis configuration to work is setting ip the router for Automatic Configuration - DHCP.
First question: is this a viable setup?
Every 20-30 seconds the connection seems to stop and then about 30+ seconds later restart. For example, a download will begin stop, continue, stop,....
I have read elsewhere on this site that the problem is caused by the modem leasing an IP address every 20 seconds to the router. The router then spends some time processing that lease. Howeve, the client lease time on the router is set to 0 - 1 day.
A suggestion was made to setup the router using the leased addresses shown on the router's status pages.
Q2: Does this mean to setup the router as static IP? The router and gateway IP adresses are the same on the status pages. So I don't understand how I can do this.
Help much appreciated
eddieareaderAsked:
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darkfriendConnect With a Mentor Commented:
Good good.  If you still have any issues keep me posted.
-DF
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darkfriendCommented:
"The router and gateway IP adresses are the same on the status pages."

I don't understand this.  Do you mean the LAN IP address and WAN default gateway are the same when using 'obtain an IP automatically?'
Maybe just leave on auto but change the LAN IP of the router to 192.168.2.1.  Then see what the status page says.  Sounds like Dlink made the IP address of the 300T 192.168.1.1 so you can configure it (for PPPoA).  The Linksys uses the same IP address so there is a conflict.  Just change the LAN IP...that should do it.
-DF
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darkfriendCommented:
Don't configure the Linksys for PPPoA if the Dlink is already setup for it; You don't need both.
-DF
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eddieareaderAuthor Commented:
Thanks for the update.
When I refer to the 'status pages' I mean the ones from Linksys accessible via 192.168.1.1 displayed under the Router sub-heading of the Status tab. On that page the displayed IP address, presumably the one leased to the WRT54G by D-link, is the same as the displayed gateway address.
I have changed the Linksys address to 192.168.1.2, I'm afraid your recommendation of 192.168.2.1 caused me to be locked out and I had to reset to the factory settings.
However, this makes matters worse, Outlook can't receive mail and web pages are slow or impossible to navigate. So I have reverted to 192.168.1.1
Since you don't comment on the router setup via the web pages of Automatic Configuration - DHCP I take this ought to be a supported configuration.
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darkfriendCommented:
When you change the Linksys LAN IP to 192.168.2.1 then you have to release and renew your computer's IP address, disable/reenable the connection, or simply reboot and then re-login to the Linksys router using the new http://192.168.2.1 instead of the usual 192.168.1.1.

Are you saying changing the LAN IP to 192.168.2.1 made matters worse or did you panic and reset right away?
PPPoA may require an MTU adjustment on the router from 1500 to 1492, or at least match the Dlink's value on the setup -> connections page, to correctly receive email and internet.
-DF
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eddieareaderAuthor Commented:
Looks like I paniced!
Making the change to 192.168.2.1 seems to have fixed it.
Thanks for your help
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