We can maximize our packet transfer through MTU (MAXIMUM TRANSMISSION UNIT)
MTU Definition:
Maximum Transfer Unit - The largest size of IP datagram that may be transferred on a given network. Most network implementations have a default setting of 1500 bytes.
Lets begin by Pinging:
A series of ping tests using the command, ping www.expedient.net -f -l xxxx, where xxxx is the packet size, can be used to determine the optimal MTU for your connection.
1. Go to Start and select Run.
2. Type in cmd (Windows 2000/XP) or command (Windows 98/ME) into the Open: field. Hit the enter key or click OK. The DOS prompt should open.
3. At the DOS prompt, type in ping www.expedient.net -f -l 1492 and hit the Enter key.
5. Note the results above indicate that the packet needs to be fragmented. 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.
7. Begin increasing 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.
For more additional Info: http://www.dslreports.com/faq/695
Next MTU Settings:
How to modify the MTU Settings for VPN Connections on XP
To modify the MTU settings for VPN connections, you need to add the ProtocolType DWORD value, the PPPProtocolType DWORD value, and the TunnelMTU DWORD value to the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\Ndiswan\Parameters\Protocols\0
To do so, follow these steps.
1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then click the following subkey in the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\NdisWan\Parameters
3. Add a Protocols subkey (if it does not already exist). To do so:
a. On the Edit menu, point to New, and then click Key.
b. Type Protocols, and then press ENTER.
4. Add a 0 (zero) subkey to the Protocols subkey. To do so:
a. Click the Protocols sub key that you created in step 3.
b. On the Edit menu, point to New, and then click Key.
c. Type 0 (zero), and then press ENTER.
5. Click the 0 subkey that you created in step 4.
6. On the Edit menu, point to New, and then click DWORD Value.
7. In the Value data box, type ProtocolType, and then click OK.
8. On the Edit menu, click Modify.
9. In the Value data box, type 800, make sure Hexadecimal is selected under Base, and then click OK.
10. On the Edit menu, point to New, and then click DWORD Value.
11. Type PPPProtocolType, and then press ENTER.
12. On the Edit menu, click Modify.
13. In the Value data box, type 21, make sure Hexadecimal is selected under Base, and then click OK.
14. On the Edit menu, point to New, and then click DWORD Value.
15. Type TunnelMTU, and then press ENTER.
16. On the Edit menu, click Modify.
17. Under Base, click Decimal, type the MTU size that you want (e.g. 1460) in the Value data box, and then click OK.
18. Quit Registry Editor.
19. Restart your computer.
If you have any doubts,Fell free to ask here......
If You Like This Article Then Hit Like Button Bellow:)
MTU Definition:
Maximum Transfer Unit - The largest size of IP datagram that may be transferred on a given network. Most network implementations have a default setting of 1500 bytes.
Lets begin by Pinging:
A series of ping tests using the command, ping www.expedient.net -f -l xxxx, where xxxx is the packet size, can be used to determine the optimal MTU for your connection.
1. Go to Start and select Run.
2. Type in cmd (Windows 2000/XP) or command (Windows 98/ME) into the Open: field. Hit the enter key or click OK. The DOS prompt should open.
3. At the DOS prompt, type in ping www.expedient.net -f -l 1492 and hit the Enter key.
5. Note the results above indicate that the packet needs to be fragmented. 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.
7. Begin increasing 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.
For more additional Info: http://www.dslreports.com/faq/695
Next MTU Settings:
By default, Windows Server 2003, 2000 and XP use a fixed maximum transmission unit (MTU) size of 1500 bytes for all PPP connections and use a fixed MTU size of 1400 bytes for all VPN connections. However, you may experience a VPN or Internet drop or slow issues with these default MTU settings, especially if you are using a DSL line. This step-by-step article describes how to modify the default MTU size settings for Point-to-Point Protocol (PPP) connections or for virtual private network (VPN) connections.
How to modify the MTU Settings for VPN Connections on XP
To modify the MTU settings for VPN connections, you need to add the ProtocolType DWORD value, the PPPProtocolType DWORD value, and the TunnelMTU DWORD value to the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\Ndiswan\Parameters\Protocols\0
To do so, follow these steps.
1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then click the following subkey in the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\NdisWan\Parameters
3. Add a Protocols subkey (if it does not already exist). To do so:
a. On the Edit menu, point to New, and then click Key.
b. Type Protocols, and then press ENTER.
4. Add a 0 (zero) subkey to the Protocols subkey. To do so:
a. Click the Protocols sub key that you created in step 3.
b. On the Edit menu, point to New, and then click Key.
c. Type 0 (zero), and then press ENTER.
5. Click the 0 subkey that you created in step 4.
6. On the Edit menu, point to New, and then click DWORD Value.
7. In the Value data box, type ProtocolType, and then click OK.
8. On the Edit menu, click Modify.
9. In the Value data box, type 800, make sure Hexadecimal is selected under Base, and then click OK.
10. On the Edit menu, point to New, and then click DWORD Value.
11. Type PPPProtocolType, and then press ENTER.
12. On the Edit menu, click Modify.
13. In the Value data box, type 21, make sure Hexadecimal is selected under Base, and then click OK.
14. On the Edit menu, point to New, and then click DWORD Value.
15. Type TunnelMTU, and then press ENTER.
16. On the Edit menu, click Modify.
17. Under Base, click Decimal, type the MTU size that you want (e.g. 1460) in the Value data box, and then click OK.
18. Quit Registry Editor.
19. Restart your computer.
If you have any doubts,Fell free to ask here......
If You Like This Article Then Hit Like Button Bellow:)
