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How to find the proper MTU size for my network

Helpful hint: One way to verify whether if it is an MTU problem is to try and access the application or website via dial up access. Since dial up uses a default MTU of 576 bytes you will not have the same problems as broadband. If you have problems with both broadband and dial up access then the problem is probably something else.

Summary One of the easy and most accurate ways to test for optimum MTU is to do a simple DOS Ping test. You will simply send out ping requests and progressively lower your packet size until the packet no longer needs to be fragmented. Although this simple test is accurate for testing end points, users may find that a lower MTU may be better for their particular circumstances. Important Note: MTU must be 1492 (or lower) when using PPPoE connectivity. More detailed information about the effects of MTU can be found here.


Important Notes: •Due to additional complications, VPNs require a different type of MTU test. Please refer to the end of this article. •If you have a network with multiple PCs every computer should be set up with the same MTU. Additionally, some PCs may use several Network Adapters or a VPN client adapter on one PC so you must verify you are changing the Network Adapter associated with your broadband service or VPN client.
• The built in PPPoE client for Windows XP uses an MTU that is set to 1480. For more information please reference this XP MTU article. This only applies if you are running the built in XP PPPoE client!


Finding the Correct MTU To find the correct MTU for your configuration you must run a simple DOS Ping test. You will simply send out ping requests and progressively lower your packet size until the packet no longer needs to be fragmented. Please reference the following steps: 


The command for this ping test is ping www.eulinx.com -f -l xxxx.

•You can use any well known, pingable domain like ping www.google.com -f -l xxxx in place of www.tp-link.com for the test. •There is a single space between each command.

•"-l" is a lower case letter L, not the number one.

•The last four numbers are the test packet size.


Step 1 Open a DOS prompt screen by clicking on Start>Programs>MSDOS-PROMPT. You can also use the Run Command by clicking on Start>Run then type in "cmd" for Windows 2000/XP/Vista or "command" for Windows 95/98/ME.

 

Step 2 At the DOS Prompt type in ping www.tp-link.com -f -l 1472 and hit Enter. Notice that the packet needs to be fragmented. (Figure 1)

200892595152212

Step 3 Drop the test packet size down (10 or 12 bytes) and test again. Notice that the packet still needs to be fragmented. (Figure 2)

mtu2

Step 4 Drop the test packet size down more and test again until your reach a packet size that does not fragment. (Figure 3)

mtu3

Step 5 Once you have a test packet that is not fragmented increase your packet size in small increments and retest until you find the largest possible packet that doesn´t fragment.
Step 6 Take the maximum packet size from the ping test and add 28. You add 28 bytes because 20 bytes are reserved for the IP header and 8 bytes must be allocated for the ICMP Echo Request header. Remember: You must add 28 to your results from the ping test!
An example: 1440 Max packet size from Ping Test + 28 IP and ICMP headers 1468 is your optimum MTU Setting

Problems connecting to my VPN or my applications stall and time out.

There are usually two common problems associated with VPN connectivity.
You can´t connect to the VPN server at all. -If you can not connect to your VPN server at all and have a router the VPN application may require you to either open certain ports, assign an IP to a specific computer, or use a separate PPPoE client directly on the computer.

You can connect and authenticate to the VPN server but nothing else happens and applications stall, time out, or fail to load. -If you can connect and authenticate but applications stall, time out, or fail to load your MTU (Maximum Transfer Unit) may be incorrect.

change you key in office 2010 onwards..

It can be done via the command line.  Open up a Command Prompt (Press the Windows Button and type CMD or navigate to All Programs -> Accessories -> Command Prompt).  Then you just need to use the command below that matches your OS.   For 32 bit Windows: cscript "C:\Program Files\Microsoft Office\Office15\OSPP.VBS" /inpkey:yourkeygoeshere   For 64 bit Windows (assuming you are using 32 bit Office): cscript "C:\Program Files (x86)\Microsoft Office\Office15\OSPP.VBS" /inpkey:yourkeygoeshere   Obviously, you need to replace yourkeygoeshere with your product key.   Note:  If you are installing a 64 bit version of Office on 64 bit Windows, the command for 32 bit Windows should be used (or just delete the (x86) part since it won't be installing to the C:\Program Files (x86)\ directory).

Using the Group policy object (GPO) to set a default wallpaper policy

You can configure a Group Policy Object (GPO) that gets applied to the desired user accounts to do this.   In Group Policy Editor (GPE), navigate to User Configuration\Windows Settings\Administrative Templates\Desktop\ Active Desktop and enable Active Desktop Wallpaper. In the Properties dialog box of this policy, you specify the full pathname of a .jpg, .bmp, or .html file and select whether to centre, stretch, or tile the image. gpowallpaper For this policy to work, you must also Enable Active Desktop, which you'll find in the same policy folder.

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A List of SMTP Servers for many ISP’s

ISP smtp server
NamesToday smtp.namestoday.ws
AOL Do not use SMTP
BlueYonder smtp.blueyonder.co.uk
BusinessServe smtp.businessserve.co.uk (aap.businessserve.co.uk for advanced access)
BTClick smtp.btclick.com
BT Internet mail.btinternet.com
BT Openworld mail.btopenworld.com
Cableinet smtp.blueyonder.co.uk
Claranet relay.clara.net
CWCom smtp.ntlworld.com
Demon post.demon.co.uk
Easynet smtp.easynet.co.uk
Freeserve smtp.freeserve.co.uk
Genie mail.genie.co.uk
ic24 smtp.ic24.net
Interdart mail.dsl.interdart.net
Iomart smtp.domain.ext
Lineone smtp.lineone.net
Lycos smtp.lycos.co.uk
Madasafish smtp.madasafish.com
Mistral smtp.mistral.co.uk
NamesToday smtp.namestoday.ws
Netscapeonline mailhost.netscapeonline.co.uk
Newnet post.newnet.co.uk
Nildram smtp.nildram.co.uk
NTLWorld smtp.ntlworld.com
OneTel mail.onetel.net.uk
Pipex smtp.dial.pipex.com
Purplenet smtp.purplenet.co.uk
Supanet smtp.supanet.com
Screaming.Net smtp.tiscali.co.uk
Telewest smtp.blueyonder.co.uk
Tesconet mail.tesco.net
Tiscali smtp.tiscali.co.uk
Totalise mail.totalise.co.uk
UKGateway smtp.ukgateway.net
V 21 smtp.v21.co.uk
Virgin smtp.virgin.net
Vispa mail.vispa.com
Waitrose smtpmail.waitrose.com
Which Online mail.which.net
Worldonline smtp.tiscali.co.uk
Yahoo smtp.mail.yahoo.com

Unlock the Digital Dash on Fords

This information sold on eBay for 99p+ as UNLOCK YOUR FORD LCD DASH DISPLAY FOCUS PUMA FEISTA Ford Puma Digital Dash Unlock - MPH / KPH / Revs etc. Unlock Digital Dash on Ford FOCUS FIESTA MONDEO ESCORT Unlock Your Ford Cougar / Mondeo / Focus / Ka Display Details Self Diagnostics Mode The Self Diagnostics Mode gives you in-depth information about your engine and the actual numbers in digital. To use it, follow the steps: * Insert Key but do not turn it on * Press and hold the Trip Meter Reset Button * While holding the reset button, start your car and continue holding the button    * Within 10 seconds, the display should change to "test" in LCD font and the needles will do a full sweeping. Release the Button Pressing the button will now cycle through some 17 different modes * 1.Shows a Gauge Sweep * 2. Shows all 8's on the LCD (LCD TEST) * 3. Illuminates all the bulbs on the dash * 4. Displays hexadecimal value for ROM level * 5. Displays the hexadecimal value for EE level * 6. Shows DTC (Diagnostic Trouble Code) * 7. Digital Speedometer - mph * 8. Digital Speedometer - kph * 9. N/A * 10. Digital tachometer * 11.Fuel volume * 12. Engine coolant temperature * 13. Battery voltage * 14. ABS fail * 15. Electronic brake distribution (EBD) failure * 16. Illumination * 17. Crank Sense  

Chocolate Oatmeal Cookies

All credit to my friend Louise for this...    2 C.  Sugar 1/2 C.  Milk 1/3 C. Cocoa 1/2 C.  Butter 1 tsp. Vanilla 1/2 C.  Peanut Butter(Chunkystyle O.K.,don't add nuts) 3 C.  Uncooked Quick Rolled Oats 1/2 C. walnuts, chopped (optional)   Mix sugar, cocoa, butter, and milk in large saucepan.  Bring mixture to boil AND let Boil 2 minutes and remove from heat.  Add peanut butter, vanilla, mix well.  Add oatmeal and nuts.  WORK VERY FAST AFTER ADDING PEANUT BUTTER.  Drop by teaspoons onto cookie sheet covered with waxed paper.  Chill until firm.   Notes:  Use Chunky style peanut butter and nuts if you like lots of nutty flavor.   If you double the ingredients Boil mixture ONLY 1 minute longer.