97D-Link DIR-615 User Manual
Section 6 - Troubleshooting
If you are having a problem sending or receiving e-mail, or connecting to secure sites such as eBay, banking sites, and web
email, we suggest lowering the MTU in increments of ten (Ex. 1492, 1482, 1472, etc).
To find the proper MTU Size, you will have to do a special ping of the destination you’re trying to go to. A destination could be
another computer, or a URL.
• Click on Start and then click Run.
• Windows
®
95, 98, and Me users type in command (Windows
®
NT, 2000,
and XP users type in cmd) and press Enter (or click OK).
• Once the window opens, you’ll need to do a special ping. Use the
following syntax:
Example: ping yahoo.com -f -l 1472
You should start at 1472 and work your way down by 10 each time.
Once you get a reply, go up by 2 until you get a fragmented packet.
Take that value and add 28 to the value to account for the various
TCP/IP headers. For example, let’s say that 1452 was the proper value,
the actual MTU size would be 1480, which is the optimum for the
network current network (1452+28=1480).
Once you find your MTU, you can now configure your router with
the proper MTU size.
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