India Broadband Forum

Calm_Tempest · 08-20-09, 12:27 AM

I own an MT 841 modem, and my plan 2mbps at 500 per month. Over the last 3 days I'm unable to display any internet page.

My modem status :

ADSL link green (not yellow) and yet stable.

A call to 1504 yielded in a stable yellow light after creating a PPPoE connection with username and password. And yet the internet did not work. I was then guided to Address Pool in the DHCP and instructed to change values and many other steps which did not solve my problem. I chanced upon the Diagnostics and when tested my active PVC, I was given this.

Modem Connection Test
Testing Ethernet connection

PASS
Testing ADSL line for sync

PASS
Testing Ethernet connection to ATM

PASS
ATM Connection Test
Testing ATM OAM segment ping

FAIL
Testing_ATM OAM end to end ping

FAIL
ISP Connection Test
Testing PPP server connectivity

PASS
Testing PPP server session

PASS
Testing authentication with server

PASS
Validating assigned IP address

PASS
Internet Connection Test
Ping default gateway

PASS
Ping Primary Domain Name Server

PASS

When I notified the helpline about this issue, they sounded lost and were unhelpful. Perhaps somebody here can help me, this problem is killing my productivity. I would be glad for assistance of any kind. Thanks in advance.

vijaykhairnar · 08-20-09, 01:11 AM

Go to Start > Run
Type ncpa.cpl > Enter
Right click LAN see properties TCP/IPv4 Properties
And make cg\hanges like screen shot given below.

This may solve your problem.

essbebe · 08-20-09, 01:37 AM

see this

SmartAX MT-841 ADSL MODEM (Type-III) MENU

or

CONFIGURATION

or

http://www.ap.bsnl.co.in/internet/directly_modem.htm

Calm_Tempest · 08-20-09, 02:14 AM

Quote:

Originally Posted by vijaykhairnar

Go to Start > Run
Type ncpa.cpl > Enter
Right click LAN see properties TCP/IPv4 Properties
And make cg\hanges like screen shot given below.

This may solve your problem.

Various combinations were given to me by the help line, I tried theirs and yours. but no avail.

There were some of the first sites I checked, and the same steps were provided by bsnl, but they didn't work for me. I came across somone with a similar problem here.

ht tp://******************/mtnl-broadband/48432-testing-atm-oam-segment-ping-fail/

(Exclude spaces please)

I would like to know where I can change this TCP MSS.

****************** = broad band forum . in

Again, pls exclude spaces.

vijaykhairnar · 08-20-09, 02:35 AM

To get TCP MSS Option, type 192.168.1.1 in your browser. Internet setting.

May be at advance > Nat settings.

Calm_Tempest · 08-20-09, 11:25 AM

Nope, NAT didn't have anything to do with TCP MSS, but all my NAT entries are disabled. Could that be the problem?

essbebe · 08-20-09, 02:02 PM

MTU/MSS/TTL etc are inter related.
Usually 1492 is the default MTU setting.
You can try TCP/IP optimizer from speed guide.net
and follow the recommendations.

Many Old modems do not have menu option to change MTU.

Para two : Summary of your Modem:
After you have entered all settings correctly
and rebooted the modem ( wait 2 or 3 minutes )
do you get Green Button against
Line 0_35 Bridged or PPPoE connection /
Do you get a "NOTE" icon also ?
If seen click it and again modem will restart.

Post these data :
Start RUN type cmd OK
New window
type ipconfig /all

vijaykhairnar · 08-20-09, 03:12 PM

My routers TCP MMS & TCP MTU values are on interface setup page. The default values are 0 (zero). I never changed those values. The router is working fine. No problem at all.

08-20-09, 12:27 AM	#1
Calm_Tempest Junior Member Join Date: Aug 2009 Age: 19 Posts: 4 Rep Power: 0	Some assisstance required. I own an MT 841 modem, and my plan 2mbps at 500 per month. Over the last 3 days I'm unable to display any internet page. My modem status : ADSL link green (not yellow) and yet stable. A call to 1504 yielded in a stable yellow light after creating a PPPoE connection with username and password. And yet the internet did not work. I was then guided to Address Pool in the DHCP and instructed to change values and many other steps which did not solve my problem. I chanced upon the Diagnostics and when tested my active PVC, I was given this. Modem Connection Test Testing Ethernet connection PASS Testing ADSL line for sync PASS Testing Ethernet connection to ATM PASS ATM Connection Test Testing ATM OAM segment ping FAIL Testing_ATM OAM end to end ping FAIL ISP Connection Test Testing PPP server connectivity PASS Testing PPP server session PASS Testing authentication with server PASS Validating assigned IP address PASS Internet Connection Test Ping default gateway PASS Ping Primary Domain Name Server PASS When I notified the helpline about this issue, they sounded lost and were unhelpful. Perhaps somebody here can help me, this problem is killing my productivity. I would be glad for assistance of any kind. Thanks in advance.

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08-20-09, 01:37 AM	#3
essbebe Platinum Member Join Date: Aug 2007 Location: Chennai Posts: 4,246 Rep Power: 12	see this SmartAX MT-841 ADSL MODEM (Type-III) MENU or CONFIGURATION or http://www.ap.bsnl.co.in/internet/directly_modem.htm

08-20-09, 02:35 AM	#5
vijaykhairnar Bronze Member Join Date: May 2009 Age: 52 Posts: 122 Rep Power: 2	To get TCP MSS Option, type 192.168.1.1 in your browser. Internet setting. May be at advance > Nat settings.

08-20-09, 11:25 AM	#6
Calm_Tempest Junior Member Join Date: Aug 2009 Age: 19 Posts: 4 Rep Power: 0	Nope, NAT didn't have anything to do with TCP MSS, but all my NAT entries are disabled. Could that be the problem?

08-20-09, 02:02 PM	#7
essbebe Platinum Member Join Date: Aug 2007 Location: Chennai Posts: 4,246 Rep Power: 12	MTU/MSS/TTL etc are inter related. Usually 1492 is the default MTU setting. You can try TCP/IP optimizer from speed guide.net and follow the recommendations. Many Old modems do not have menu option to change MTU. Para two : Summary of your Modem: After you have entered all settings correctly and rebooted the modem ( wait 2 or 3 minutes ) do you get Green Button against Line 0_35 Bridged or PPPoE connection / Do you get a "NOTE" icon also ? If seen click it and again modem will restart. Post these data : Start RUN type cmd OK New window type ipconfig /all

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