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[coolinx]

I was about to open a new topic for this problem but got it resolved now after hours and hours of trying.

I setup the DSL-2750U to replace my old modem from TDM adsl here in Mozambique.

Entered all details like username/password, etc. Also used the telnet console to change the mac address into the one from the old modem (the `macaddr`  command). TDM expects a certain mac address.

I kept getting authentication failures while I knew for sure that the username/password was 100% correct. Tried everything... Tried even bridge mode using a dd-wrt device for the ppp part. That worked fine.

I found out that the mac address that the 2750 is using for the ppp authentication towards the ISP is not the local lan address. It is the local lan address +2!

So I subtracted 2 from the mac address I need to send to the ISP and ran the macaddr command with that. Connection is up now.

Hope this helps others.

[FurryNutz]

Thanks for sharing the good info. 

Enjoy.

[specialstevie8]

Facing exactly the same problem ....

Couldn't understand the solution proposed by .. Coolinx here ..

Can anyone help me please ?

[FurryNutz]

I recommend that you phone contact your regional D-Link support office and get immediate help and information on this.

Good Luck.

Facing exactly the same problem ....

Couldn't understand the solution proposed by .. Coolinx here ..

Can anyone help me please ?

[coolinx]

Hi there, Ill explain once more:

You need to change the mac-address on the dlink to the same mac-address as the old modem. You can do that by loging into the dlink command line interface with telnet and use the macaddr command.

The problem I had was that the mac-address that the DSL interface gets is a value of 2 more than what you entered with the macaddr command. To fix this you take the mac-address from the old modem, subtract 2 and enter that value in the macaddr command via the command line interface.

Hope it is a bit more clear now.

[FurryNutz]

Any status on this? 

Facing exactly the same problem ....

Couldn't understand the solution proposed by .. Coolinx here ..

Can anyone help me please ?