Allied Telesis AT-2712FX, Installation And User Manual, Page: 71 / 100

Secure Ethernet Network Adapters Installation and User’s Guide
71
Updating the
Jumbo MTU
Property
The Jumbo MTU property allows the adapter to transmit and receive
oversized Ethernet frames that are greater than 1,514 bytes but less than
9,000 bytes in length. Note that this property requires a switch that is able
to process large frames. By default, the Jumbo MTU property is set to
1500 bytes.
To increase the size of the received frames, do the following:
1. Access the Advanced tab:

For Windows Server 2003 Operating systems, see “Selecting the
Advanced Tab in Windows Server 2003 or Windows XP” on
page 58.

For Windows 7 Operating systems, see “Selecting the Advanced
Tab in Windows 7” on page 61.

For Windows Vista Operating systems, see “Selecting the
Advanced Tab in Windows Vista” on page 63.
The Advanced tab is shown in Figure 30 on page 60.
2. From the Property list on the Advanced tab, select Jumbo MTU .
3. From the Value list on the Advanced tab, select the byte quantity in
500-byte increments.
4. Click OK .
5. If prompted to restart your computer, click Yes .
Although it is not necessary to reboot the system for new adapter
properties to take effect, rebooting is recommended to reinitialize all
registers.
6. Verify that the adapter port LEDs are operating correctly. See one of
the following descriptions:

“AT-2712FX/SC and AT-2712LX20/SC Adapters Physical
Descriptions” on page 17

“AT-2912T Adapter Physical Description” on page 18