D-Link DIR-615 User Manual page 92

Wireless n router with 2 detachable antennas

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Section 6 - 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,

lets 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 Save Settings to save your settings.

• Test your e-mail. If changing the MTU does not resolve the problem, continue changing the MTU in

increments of ten.

D-Link DIR-615 User Manual

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