Some websites are not opening using bsnl broadband

[sougatain]

Hi, I have got my bsnl broadband few weeks ago. It is running nicely on my ubuntu lucid desktop. But form past few days I'm unable to browse some of my websites from ubuntu. I have dual boot my pc wiht Microsoft Window XP(original). The websites which are not opening in ubuntu are easily opening in xp. I have changed the DNS servers to 8.8.8.8 and 8.8.4.4 and also my MTU to 1452 but nothing is happening. I called the customer care but they didn't gave me any fruitful solution. Please help me to overcome the problem. Thank you.

[maverick555]

network connenction --> edit connection --> dsl --> edit then,go to ipv4 setting.
In method click manual -->then put address 192.168.1.3 netmask --> 255.255.255.0 gateway--> 192.168.1.1
dns server--> 8.8.8.8,8.8.4.4 There is a quama , after 8.8.8.8
Click apply and restart your pc.

[karthick87]

Have you tried another browser?And what website you are trying to access..If you are uisng firefox,then try clearing your browser caches and then try again..

[sougatain]

network connenction --> edit connection --> dsl --> edit then,go to ipv4 setting.
In method click manual -->then put address 192.168.1.3 netmask --> 255.255.255.0 gateway--> 192.168.1.1
dns server--> 8.8.8.8,8.8.4.4 There is a quama , after 8.8.8.8
Click apply and restart your pc.

Thanks for your answer. I did exactly what you said. But its still not working. Most amazingly no information that I given is working. For making it easy for you I'm giving some screenshots and also output of my IFCONFIG.






OUTPUT OF IFCONFIG

eth0      Link encap:Ethernet  HWaddr 00:24:8c:c9:f9:6f  
          inet6 addr: fe80::224:8cff:fec9:f96f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:448 errors:0 dropped:0 overruns:0 frame:0
          TX packets:491 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:214492 (214.4 KB)  TX bytes:157752 (157.7 KB)
          Interrupt:26 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:480 (480.0 B)  TX bytes:480 (480.0 B)

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:117.205.162.252  P-t-P:117.205.160.1  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
          RX packets:401 errors:0 dropped:0 overruns:0 frame:0
          TX packets:444 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:202681 (202.6 KB)  TX bytes:146367 (146.3 KB)

I am using the following modem:

But all is working in windows7 finely.

PLEASE GIVE ME SOME FURTHER GUIDANCE.

[karthick87]

Can you ping the ip address of the website?Post the output of,

ping 209.85.231.104

[sougatain]

Can you ping the ip address of the website?Post the output of,

ping 209.85.231.104

sougata@sougata-desktop:~/Desktop$ ping 209.85.231.104
PING 209.85.231.104 (209.85.231.104) 56(84) bytes of data.
64 bytes from 209.85.231.104: icmp_seq=1 ttl=53 time=117 ms
64 bytes from 209.85.231.104: icmp_seq=2 ttl=53 time=117 ms
64 bytes from 209.85.231.104: icmp_seq=3 ttl=53 time=116 ms
64 bytes from 209.85.231.104: icmp_seq=4 ttl=53 time=117 ms
64 bytes from 209.85.231.104: icmp_seq=5 ttl=53 time=117 ms
64 bytes from 209.85.231.104: icmp_seq=6 ttl=53 time=116 ms
64 bytes from 209.85.231.104: icmp_seq=7 ttl=53 time=116 ms
64 bytes from 209.85.231.104: icmp_seq=8 ttl=53 time=116 ms
64 bytes from 209.85.231.104: icmp_seq=9 ttl=53 time=116 ms
64 bytes from 209.85.231.104: icmp_seq=10 ttl=53 time=117 ms
64 bytes from 209.85.231.104: icmp_seq=11 ttl=53 time=116 ms
64 bytes from 209.85.231.104: icmp_seq=12 ttl=53 time=116 ms

[sarim]

Try disconnecting the connect again, then check if the configuration changes are working ?

[sougatain]

@sarim, I did everything new connection, disconnect and again connect, resetup also. But of them worked for me.

[dineshs]

If certain sites are not opening the problem might be MTU.Please referthis guide to find out the optimum value of MTU .Then set the value in Network manager via DSL tab or see
http://ubuntuforums.org/showthread.php?t=1619527
Note :At present you are using modem in Bridge mode.You may try modem in PPPoE mode (Always ON mode where you dont need a PPPoE dialler to connect to internet) if the above method doesnt work.For this follow
http://www.calcutta.bsnl.co.in/dataoneinstall/mu12.html

[karthick87]

The problem is your DNS server i guess,Post the output of..

cat /etc/resolv.conf