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Chapter 3 Configuring Driver Parameters 37
Jumbo Frames
The variable
accept-jumbo
allows the driver to instruct the upper layers that the
driver is operating in jumbo frames mode.
Note –
The Solaris 8 software allows you to set the MTU to greater than 1500, but it
does not automatically change the default.
Although Jumbo Frames is configurable in 10/100 mode, Jumbo Frames is only
supported in the Gigabit (1000Mbps) mode. Configuring Jumbo Frames allows the
Ethernet interfaces to send/receive packets of up to 9216 bytes. However, the actual
transfer size depends on the switch capability.
Refer to the documentation that came with your switch for exact commands to
configure Jumbo Frames support.
rx_dma_weight
Determine the multiplication factor for granting credit to the RX
side during a weighted round robin arbitration. Values are 0 to 3.
(Default=0)
infinite_burst
allows the infinite burst capability to be utilized. When this is in
effect and the system supports infinite burst. The adapter will not
free the bus until complete packets are transferred across the bus.
Values are 0 or 1. (Default=0)
disable_64bit
Switches off 64 bit capability of the adapter. In some cases, it is
useful to switch off this feature.
Values are 0 or 1. (Default=0, which enables 64 bit capability)
TABLE 3-10 accept-jumbo
Parameters
Parameter Values Description
accept-jumbo
1 Enables jumbo frames mode and sets MTU
to greater than 1500.
0 Jumbo frames is not enabled. MTU is at
1500.
TABLE 3-9
PCI Bus Interface Parameters
Parameter Description