D-Link DIR-600L User Manual page 86

Wireless n 150 cloud router

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Section 12 - Troubleshooting

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 we're working with (1452+28=1480).

Once you find your MTU, you can now configure your router with the proper MTU size.

To change the MTU rate on your router follow the steps below:

• Open your browser, enter the IP address of your router (192.168.0.1) and click OK.

• Enter your username (admin) and password (blank by default). Click OK to enter the web configuration page

for the device.

• Click on Setup and then click Manual Configure.

• To change the MTU enter the number in the MTU field and click the Save Settings button to save your settings.

• Test your email. If changing the MTU does not resolve the problem, continue changing the MTU in increments

of ten.

D-Link DIR-600L User Manual

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