Thread: Peculiar problem about BSNL connection after change of router

I have been having BSNL broadband connection, Business 700 for the past 5 years in my office. The office has a desktop near the reception, and has UTStarcom UT300R2U router for broadband, a Linksys wireless router thru which we connect our laptops to the desktop and the internet, and a Linksys broadband firewall router (VPN) thru which I connect to our main server kept elsewhere via internet. Recently, the router was replaced ( with another UT300R2U modem ). Since then, we are unable to browse the internet at the desktop near the receptionist, but the same desktop is able to connect to the VPN via internet, and also using Skype on the desktop is possible. Thru the wireless our laptops are able to both connect to the VPN, as well as browse the net. The router is configured in bridge mode, as the VPN requires it. A similar problem had occured when the 1st UT300R2U router was installed, and a helpful technical person at BSNL sorted it out. This time, the person available there is unable to figure it out. Please help!. Thanks in advance.

post output of the following from the command prompt of the desktop
1)ipconfig
2)ping google.com
3)ping 208.67.222.222

It is quite possible that you have assigned a manual TCP/IP address to the computer in problem. It may have worked in the past but may have changed since then.

Or, there could be a simple case of hardware/cable fault also.

Please do what superprash has recommended. But post the details (especially 'ipconfig') from the computer that is able to connect to internet and the one that is *not* connecting.

The UT300R2U model supplied to 5 years
back and now recently given will be different.

1.In the Desktop LAN1 which does not connect to Internet try:
Start /Network/ LAN
properties
Network settings page
select TCP/IP
properties
Enable " assign IP address automatically"
Apply Save.
2.
If not working
post ipconfig /all for both computers as suggested above.
procedure
Computer ( reception) Not connected
Start RUN type cmd OK
New window
type ipconfig /all
Copy/paste data here.
3.
similar step for computer In Lan2 or Lan3
getting connected to Internet.
Copy/paste data.
4.
If Skype can connect ( computer reception) modem's access control page may be checked.

DESKTOP WHICH DOES NOT CONNECT TO THE NET


C:\Documents and Settings\User>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : comp
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8168/8111 PCI-E Gigabit E
thernet NIC
Physical Address. . . . . . . . . : 00-1C-C0-10-12-F0
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.5.105
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.5.1
DNS Servers . . . . . . . . . . . : 202.9.145.6
202.56.250.5

C:\Documents and Settings\User>ping google.com
Ping request could not find host google.com. Please check the name and try again

C:\Documents and Settings\User>ping 208.67.222.222

Pinging 208.67.222.222 with 32 bytes of data:

Reply from 208.67.222.222: bytes=32 time=253ms TTL=55
Reply from 208.67.222.222: bytes=32 time=252ms TTL=55
Reply from 208.67.222.222: bytes=32 time=256ms TTL=55
Request timed out.

Ping statistics for 208.67.222.222:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 252ms, Maximum = 256ms, Average = 253ms


LAPTOP WHICH CONNECTS TO THE INTERNET


C:\Users>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : NPC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : 00-21-86-91-D1-15
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG Network Con
nection
Physical Address. . . . . . . . . : 00-1F-3C-A0-92-68
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::f9a9:d488:b958:c599%9(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.5.102(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Thursday, September 17, 2009 3:19:07 PM
Lease Expires . . . . . . . . . . : Friday, September 18, 2009 3:19:07 PM
Default Gateway . . . . . . . . . : 192.168.5.1
DHCP Server . . . . . . . . . . . : 192.168.5.1
DNS Servers . . . . . . . . . . . : 218.248.240.23
218.248.240.135
202.56.250.5
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{461FA557-863F-4149-8820-44B6BE24F
07C}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 11:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{51C99274-7740-4E26-9F01-51EDA0016
B88}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes



C:\users>ping google.com

Pinging google.com [74.125.127.100] with 32 bytes of data:
Reply from 74.125.127.100: bytes=32 time=287ms TTL=50
Reply from 74.125.127.100: bytes=32 time=399ms TTL=50
Reply from 74.125.127.100: bytes=32 time=319ms TTL=50
Reply from 74.125.127.100: bytes=32 time=327ms TTL=50

Ping statistics for 74.125.127.100:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 287ms, Maximum = 399ms, Average = 333ms


C:\Users>ping 208.67.222.222

Pinging 208.67.222.222 with 32 bytes of data:
Reply from 208.67.222.222: bytes=32 time=249ms TTL=55
Reply from 208.67.222.222: bytes=32 time=250ms TTL=55
Reply from 208.67.222.222: bytes=32 time=258ms TTL=55
Reply from 208.67.222.222: bytes=32 time=250ms TTL=55

Ping statistics for 208.67.222.222:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 249ms, Maximum = 258ms, Average = 251ms

Originally Posted by kinind

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8168/8111 PCI-E Gigabit E
thernet NIC
Physical Address. . . . . . . . . : 00-1C-C0-10-12-F0
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.5.105
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.5.1
DNS Servers . . . . . . . . . . . : 202.9.145.6
202.56.250.5

Change the value of default gateway as 192.168.1.1 and try. Also change the IP address as 192.168.1.105.

Procedure

http://www.indiabroadband.net/broadb...nectivity.html (How to repair - Limited or No connectivity)

Change DNS to 208.67.220.220 and 208.67.222.222
You can change in the modem/router also.
of the DNs used by you belongs to Airtel(1) and one to
BSNl Chennai(1). Rest (3)connecting to New Delhi BSNL/Sancharnet.

Also disable IPV6 in Network settings page

Free Product Demo, Tools and Sample Databases

Thanks essbebe, your solution worked like a charm!. And to think i spent more than 2 hours with the bsnl person deleting temp internet files, cookies, restarting the router etc. And a big thanks to india broadband forum, for tech ignorant people like me can make use of the expertise of all the pros on the forum!