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AT-2900 Series Gigabit Ethernet Network Adapters Installation Guide
59
Jumbo Mtu
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. For Windows Server 2003 and Windows XP systems, access the
System Properties Dialog Box. See “Modifying Configuration
Properties” on page 39.
For Windows 2008 R2, Windows 7, and Windows Vista systems,
access the Device Manger for your operating system:
To access the Device Manager window in Windows 2008 R2 or
Windows 7, see “Selecting the Device Manager in Windows 2008
R2 and Windows 7” on page 44.
To access the Windows Vista Device Manager, see “Selecting the
Device Manager in Windows Vista” on page 45.
2. Click the Advanced tab.
The Advanced tab is shown in Figure 21 on page 56.
3. From the Properties list, select Flow Control.
4. From the Values list, increment the byte quantity in 500-byte
increments.
5. Click OK.
6. 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.
7. Verify that the adapter port LEDs operate as described in “LEDs” on
page 16.