Unable to connect internet through Netgear DGN1000 Wireless ADSL2 Modem Router

Hi Expert,

Previously it was working fine and I am able to connect to internet. But suddenly it stopped working. I am getting following error.

Sat, 2000-01-01 00:01:00 - Initialize LCP.
Sat, 2000-01-01 00:01:01 - LCP is allowed to come up.
Sat, 2000-01-01 00:01:01 - CHAP authentication failed
Sat, 2000-01-01 00:01:01 - LCP down.
Sat, 2000-01-01 00:01:33 - LCP is allowed to come up.
Sat, 2000-01-01 00:01:33 - CHAP authentication failed
Sat, 2000-01-01 00:01:33 - LCP down.
Sat, 2000-01-01 00:01:40 - Administrator login successful - IP:192.168.0.2

I have another Type I modem (SmartAX 882) and I am successfully able to connect with same id and password through PC dial-up (WAN Miniport PPPOE).

Please help ...
************************************************** ***************
Adding more debug log from router:

setting line discipline hook
Sending PADI
HOST_UNIQ successful match
HOST_UNIQ successful match
Got connection: e53
Connecting PPPoE socket: 00:30:88:23:27:53 0e53 nas0 0x1004e098
using channel 1
Using interface ppp0
Connect: ppp0 <--> nas0
Couldn't increase MTU to 1500.
Couldn't increase MRU to 1500
sent [LCP ConfReq id=0x1 <mru 1492> <magic 0x56d1aa01>]
rcvd [LCP ConfReq id=0xdc <mru 1460> <auth chap MD5> <magic 0x209b1fd5>]
sent [LCP ConfAck id=0xdc <mru 1460> <auth chap MD5> <magic 0x209b1fd5>]
rcvd [LCP ConfNak id=0x1 <mru 1460>]
Untimeout 0x408a14:0x1004a8d0.
sent [LCP ConfReq id=0x2 <mru 1460> <magic 0x56d1aa01>]
rcvd [LCP ConfAck id=0x2 <mru 1460> <magic 0x56d1aa01>]
Untimeout 0x408a14:0x1004a8d0.
sent [LCP EchoReq id=0x0 magic=0x56d1aa01]
rcvd [CHAP Challenge id=0x1 <4a940857e8c1d8a0895b41534cddf22e>, name = "bgl-ras-bng-jnr-04"]
sent [CHAP Response id=0x1 <6c87ef35bec5604414e95f6f243fa038>, name = "xxXXyyZZyyXZ"]
rcvd [LCP EchoRep id=0x0 magic=0x209b1fd5]
rcvd [CHAP Failure id=0x1 "Invalid CHAP-Password"]
Untimeout 0x411b84:0x1004ab40.
Remote message: Invalid CHAP-Password
CHAP authentication failed
Untimeout 0x40ce30:0x1004a8d0.
Untimeout 0x411b84:0x1004ab40.
Couldn't increase MTU to 1500.
Couldn't increase MRU to 1500
sent [LCP TermReq id=0x3 "Failed to authenticate ourselves to peer"]
rcvd [LCP TermReq id=0xdd]
sent [LCP TermAck id=0xdd]
rcvd [LCP TermAck id=0x3]
Untimeout 0x408a14:0x1004a8d0.
Connection terminated.
Doing disconnect

have another Type I modem (SmartAX 882) and I am successfully able to connect with same id and password through PC dial-up (WAN Miniport PPPOE).
Check authentication mode.

2.
NetgearDGN1000 In PPPoE mode failure.

CHAP authentication failed:

try auto mode if available.
Use "Bridged" dialer mode as for MT 882.
MTU MRU if in PPPoE mode 1460.

Post as attachment JPG connection status page.
Feedback.

1. try auto mode if available.
Use "Bridged" dialer mode as for MT 882.
MTU MRU if in PPPoE mode 1460.


1. I have tried all mode ADSL (G.MDT), ADSL2, ADSL2+ and AUTO (Multi-Mode) but no luck.
2. Bridged dialer mode is not avaiable in Netgear modem
3. Changed MTU size to 1460 still not working

Change encaspulation mode :
Select NO to question:
Does your ISP need log in with Id PW etc ?
Log from computer window.

If Yes:PPPoE
different page.
http://screenshots.portforward.com/N...c_Settings.htm
Advanced WAN:
top box selected ?
http://screenshots.portforward.com/N.../WAN_Setup.htm

{Authentication : I meant AUTO/CHAP/ PAP /MSCHAP as seen in MT882.
could not find it in Netgear}.

Reported working MTU value 1430.
Confirm LAN mode OK.

feedback.

Problem is solved… There was some problem from Exchange end.

Let me explain here what the exact problem was.

I have changed broadband password through (hxxp://ssss-multiplay.bsnl.co.in:8080/ssssportal.war/home.jsp) on 29/11/2011. Password was successfully changed but I was unable to login with new password. I was getting "CHAP authentication failed" error in NETGEAR Router log. Then I called Broadband helpline on 30/11/2011 evening and they reset my password to default i.e "password". Still I was not getting internet through NETGEAR Router. Then I have checked with Type I modem (SmartAX 882) and configured (Dial-up/WAN Miniport PPPOE) in my laptop. I found I was able to login with new password (changed on 29/11/2011) successfully not with default password i.e. "password". (Plz note password already changed by help desk). So again I checked through NETGEAR Router but no luck. So I think something needs to refresh / configure in Exchange side also.

Today morning I got a call from Exchange and then I asked them to reset my password. They changed the password and told me they are successfully able to login with my default password from their end. But still I was not able to login. Now I have check NETGEAR router log and I found no more "CHAP authentication failed" error. But now modem stuck up after this message “Initialize LCP” and LCP was unable to come up. Again I called Exchange people and they told there is some problem in server end and asked me to check after sometime.

After 10-15 mins I am successfully able to browse internet through NETGEAR Router without any change in my existing settings.

So my request to everybody please don't try to change broadband password. It might be painful for you.