Cisco 877 Wireless router connection problems

[JacquesLayman]

Hi,

Sorry if the is posted in the wrong community. Can anyone please help me out? 

I have a Cisco 877w router and is trying to configure it for ADSL. It manage to connect but disconnect every few seconds just after it connected.

While connected I am able to go to websites but before I can do anything further it disconnects.

Any help will be greatly appreciated.

Attached is the configuration that I currently have

Regards,

Jacques

[Mark Mc Nicholas]

You may wish to remove 

 ppp pap sent-username XXXXXXXXXXXXXXX password 0 XXXXXXXXX

from the dialer interface most ISP's support CHAP

I'd also suggest adding ip tcp adjust-mss 1452

 to the dialer interface

does show logging give any information?

you may need to run some debugs like

debug pppoe errors

debug pppoe events 

to gather some more info however remember to issue undebug all ( u all) to turn off debugging