Bsnl broadband is a good service,but sometimes it can be very sluggish and slow like hell.If you need to achieve the maximum potential of your broadband connection follow these simple steps.
Before we start go to speedtest.net and test your broadband speed.
1.first thing you will have to do is change your dns settings and no not open dns , 'open dns' is "crap" when you are connecting from a place like india . change your dns settings to
218.248.240.208 & 218.248.240.135
to change your dns:
1.Double click on Local Area Connection and select Properties.
2.Select ‘Internet Protocol(TCP/IP)’ and click on Properties.
3.Select ‘Use following IP address’and enter IP address 192.168.1.100, subnet mask 255.255.255.0, Default gatway 192.168.1.1, Preferred DNS 218.248.240.208 and Alternate DNS as 218.248.240.135

2.Next go to speedguide.net and download their tcp/ip optimiser then open up tcp /ip optimiser then write down the following settings:
General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1480
TTL - 64
TCP Receive Window - 126720
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - checked
Timestamps - uncheck

Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 20
LocalPriority - 1
Host Priority - 1
DNSPriority - 1
NetbtPriority - 1
Lan Browsing speedup - optimized
QoS: NonBestEffortLimit - 0
ToS: DisableUserTOSSetting - 0
ToS: DefaultTOSValue - 136
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot to take effect

Use the following with TCP Optimizer for 512 kbps:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1480
TTL - 64
TCP Receive Window - 31680
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - uncheck
Timestamps - uncheck

Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 20
LocalPriority - 1
Host Priority - 1
DNSPriority - 1
NetbtPriority - 1
Lan Browsing speedup - optimized
QoS: NonBestEffortLimit - 0
ToS: DisableUserTOSSetting - 0
ToS: DefaultTOSValue - 136
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot to take effect
(You can also try using SpeedConnect Internet.Accelerator which is fully-automated,to download it go to megadownload.net and type speed connect)
3.XP reserve 20% of the bandwidth :heres how to disable it
1. make sure your logged on as actually "Administrator". Do not log on with any account that just has administrator privileges.
2. start - run - type gpedit.msc
3. expand the "local computer policy" branch
4. expand the "administrative templates" branch
5. expand the "network branch"
6. Highlight the "QoS Packet Scheduler" in left window
7. in right window double click the "limit reservable bandwidth" setting
8. on setting tab check the "enabled" item
9. where it says "Bandwidth limit %" change it to read 0
10. Reboot if you want to but not necessary on some systems your all done. Effect is immediate on some systems. some need re-boot. I have one machine that needs to reboot first, the others didn't. Don't know why this is.

4.Disable unnescessary services:
go to network connections>Local Area Connection right click select properties & disable client for microsoft networks,file & printer.......,qos packet scheduler .If you have other lan cards /adapters which is not in use .Right it ,and uncheck all of the boxes even the internet protocol(tcp/ip)
5.get spyware doctor and scan for spywares and adwares everyday.
6.get a registry fixing tool and scan for registry problems.
7.Delete temporary files regularly.try using cc cleaner.

Now again go to speedtest.net and test your speed i am sure now you get twice the speed you got last time

Post By Diggdemon from BSNL broadband cheats blog