8–Using QLogic Control Suite
Managing the LAN Device
116
83840-546-00 D
Jumbo Packet
Enables the network adapter to transmit and receive oversized
Ethernet frames that are greater than 1514 bytes, but less than or equal to 9614
bytes in length. This property requires the presence of a switch that is able to
process jumbo frames. This property is only available for QLogic 8400/3400
Series adapters.
Frame size is set at 1514 bytes by default. Alternative frame sizes are 4088, 9014,
and 9614.
LSO & Jumbo Frames
Enables the network adapter to transmit and receive
oversized Ethernet frames that are greater than 1514 bytes, but less than 9600
bytes in length. This property requires the presence of a switch that is able to
process Jumbo frames.
Frame size is set at 1500 bytes by default by selecting the
LSO Enabled, Jumbo
Off
option.
Normally, the TCP segmentation is done by the protocol stack. When you enable
the Large Send Offload (LSO) property, the TCP segmentation can be done by
the network adapter.
Both Disabled
. LSO & Jumbo frames are both disabled.
LSO Enabled, Jumbo Off (default)
. LSO enabled and jumbo frames
disabled.
LSO Off, Jumbo 3000
. Frame size of 3000 bytes and LSO off.
LSO Off, Jumbo 4500
. Frame size of 4500 bytes and LSO off.
LSO Off, Jumbo 6000
. Frame size of 6000 bytes and LSO off.
LSO Off, Jumbo 7500
. Frame size of 7500 bytes and LSO off.
LSO Off, Jumbo 9600
. Frame size of 9600 bytes and LSO off.
NOTE
If SR-IOV is enabled on a virtual function (VF) on the adapter, ensure that
the same jumbo packet settings is configured on both the VF and the
Microsoft synthetic adapter. You can configure these values using Windows
Device Manager > Advanced properties.
If there is a mismatch in the values, the SRIOV function will be shown the
Degraded state in Hyper-V > Networking Status.
NOTE
Jumbo Frames and Large Send Offload (LSO) are mutually-exclusive
properties.