Thread: Cannot open certain sites on bsnl broadband

i am facing a weird problem with my bsnl 750ul+ broadband connection

some 15 days back the bsnl shifted its servers to new ones in their exchange since then some sites do not load fully on my system (eg. live.in, mobile-review, yahoo mail) dropbox cannot upload files

now its gets more weirder that i can access all these websites fully through a proxy website!!!!!

i have tried different dns servers(google & open dns) have tried diff. MTU values in the router but with no success

the bsnl guy says since my router (utstarcom WA3002-g1) is very old and they have updated to latest servers i need to change my perfectly working modem

should i attempt a firmware upgrade on my router, as i have read that the wa3002 g1 is the same as beetle 450 tc1?

HELP

you tried resetting the router

Originally Posted by vishalg

i am facing a weird problem with my bsnl 750ul+ broadband connection

some 15 days back the bsnl shifted its servers to new ones in their exchange since then some sites do not load fully on my system (eg. live.in, mobile-review, yahoo mail) dropbox cannot upload files

now its gets more weirder that i can access all these websites fully through a proxy website!!!!!

i have tried different dns servers(google & open dns) have tried diff. MTU values in the router but with no success

the bsnl guy says since my router (utstarcom WA3002-g1) is very old and they have updated to latest servers i need to change my perfectly working modem

should i attempt a firmware upgrade on my router, as i have read that the wa3002 g1 is the same as beetle 450 tc1?

HELP

as micky earlier said triy to reset ur router
nd buddy change the modem..whats ur budget....u can try beetel 220 bx or beetel 450 bxi nd try thee 500 plan its gud...worth of money....feedback

@mickey
yup tried that too

@master05
do you think the problem is due to the outdated router?
can you suggest some good branded router between 2-2.5k?

should i attempt a firmware upgrade?

yes try firmware upgrade, though i dont think it will help...

^^
is it ok to try the beetle 450 tc1 file? coz i cant find any firmware for the wa3002 g1

do you think the router is the culprit?

I really dont feel if the router is the culprit.. because you said you can access all websites using a proxy service. so the problem is not client side.. could be a port error though but it is manageable.
i was going to tell you "change dns stuff" but you said not helping..

I advice you to wait for essbebe, he is a master on broadband stuff
i am sorry but my help is limited here, hope you dont mind

how will you update the router?

not at all buddy, your help is very appreciated

i was thinking of using the beetle 450tc1 router's firmware file, as i have read that they are basically the same models

Originally Posted by vishalg

not at all buddy, your help is very appreciated

i was thinking of using the beetle 450tc1 router's firmware file, as i have read that they are basically the same models

wait for essebe nd try firware upgrade(at ur own risk)

Please check the /interface/internet page MSS MTU settings. from working connection.

2.
Check other settings in this link. Similar working modem Mine.
http://mybroadbandforum.com/viewtopic.php?f=64&t=2846

still no success
i am attaching my configs scrshot

select default 0 and 0 for both. SAVE
Reboot from current settings.
http://www.indiabroadband.net/broadb...tml#post335101 (Optimal MTU size)

sorry didnt get you
which values should i set to 0

edit
do you mean tcp mss & mtu values?

coz i did that and its still the same result

As you are getting connected to Internet and can surf , exceptffor some websites not accessed, FW upgrade not recommended.

Usual remedy is to to get the correct MTU value for this problem.

You can also download TCp/Ip optimizer from speedguide.net
and check what values of MSS and MTU are selected in Optimal mode.

Feedback.

here is the screenshot of tcp optimizer
its showing 1500, whereas i have set 1460 in my router settings

1.
Try to get one web site say yahoomail by selecting correct MTU.
Recheck with other web sites.
2.
copy/paste result here for further suggestions.
1) Open an elevated command prompt and type:

netsh interface ipv4 show subinterfaces

and hit Enter.

You should get a list of all your network adapters installed on your PC
with MTU values.
3.
Worst case scenerio; try another modem ! browser/s

Originally Posted by essbebe

1.
Try to get one web site say yahoomail by selecting correct MTU.
Recheck with other web sites.

?????

here the scrshot with the command
i guess windows is stuck with 1500

C:\Users\Kavika>ping yahoomail.com -f -l 1500

Pinging yahoomail.com [68.180.206.184] with 1500 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 68.180.206.184:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
.......... 1492 1480 etc ....
C:\Users\Kavika>ping yahoomail.com -f -l 1460

Pinging yahoomail.com [68.180.206.184] with 1460 bytes of data:
Reply from 68.180.206.184: bytes=1460 time=285ms TTL=54
Reply from 68.180.206.184: bytes=1460 time=285ms TTL=54
Reply from 68.180.206.184: bytes=1460 time=285ms TTL=54
Reply from 68.180.206.184: bytes=1460 time=283ms TTL=54

Ping statistics for 68.180.206.184:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 283ms, Maximum = 285ms, Average = 284ms

Para two:

C:\Users\Kavika>netsh interface ipv4 show subinterfaces

MTU MediaSenseState Bytes In Bytes Out Interface
------ --------------- --------- --------- -------------
4294967295 1 0 407883 Loopback Pseudo-Interface 1
1500 5 0 0 Wireless Network Connection
1492 1 12161672 3183791 Local Area Connection

Set in modem MTU 1492. (LAN mode )


C:\Users\Kavika>

Many users complain that some websites do not open, and usual suggestion is to change the MTU values in modem.
Applications are also recommended for trying different
values.
Now the following is another method for MTU selection.


General instruction for finding your optimal MTU size

Go to Start and select Run.
Set router to MTU 1500 to start with.
Start RUN
Type in cmd (Windows 2000/XP/Vista/7) or command (Windows 98/ME) into the box .
Hit the enter key or click OK
At the DOS prompt,
type in ping bbc.co.uk -f -l 1492
and hit the Enter key.
If you get the response "Packet needs to be fragmented but DF set",
lower the size the packet in increments of +/-10 (e.g. 1472, 1462, 1440, 1400) until you have a packet size that does not fragment.
Now increase the packet size from this number in small increments until you find the largest size that does not fragment.
Add 28 to that number (IP/ICMP headers) to get the optimal MTU setting.
For example, if the largest packet size from ping tests is 1462, add 28 to 1462 to get a total of 1490 which is the optimal MTU setting and can be put in your router's settings
!
Hope this helps some of you!?

Source : NETGEAR site.
BY ESSBEBE

@essbebe
i am getting packet fragment from 1500-1480
request timed out from 1470-40

1432 is the highest value where packet dosent fragment
so mtu is 1432+28=1460 which i have set in my router, but windows shows it to be 1500!!


@master05
thanks

You should say whether your problem is solved!! What is MSS value now ?
link was given in Post No 12 and reproduced in Post No 19 !
http://www.indiabroadband.net/broadb...tml#post335101 (Optimal MTU size)

Code:

IF IT WORKS  DON'T REPAIR !!

Additional reference ;
PChucks Network: Setting The MTU In Windows Vista

support.microsoft.com/kb/283165(for xp)
support.microsoft.com/kb/826159(for win7)
source:google

please put maxmtu 1500 in order to get maximum result
would u like to continue?
are u getting this???

http://www.speedguide.net/downloads.php(tcp/ip optimizer) for all os....

@essbebe

no it didnt work

i had already performed the ping test for mtu value, and the highest value at which the packet didnt fragment was 1432 and hence i entered 1460 in the router settings
now the command "C:\Users\Kavika>netsh interface ipv4 show subinterfaces"
shows the mtu to be set at 1500
so i am confused whether the actual value is 1500 or 1460

Try 1432 itself. for Yahoo mail.
CHanging Registry entries etc not advised.
Always make a System Restore Point or back up registry entries, if trying to change MTU value etc in system.

i used this command to set an mtu value of 1460 under windows
"netsh interface ipv4 set subinterface "Local Area Connection" mtu=1460 store=persistent"

although i was having 1460 under my router settings, windows was showing 1500. After this both show 1460 and all sites work

but one issue remains,often i cannot access my router's page, it keeps on working and displays page cannot be displayed while i can access other websites!!