Selecting jumbo frame mode on Gigabit Ethernet
You must select the jumbo frame mode as a device option.
Trying to change the MTU size with the ifconfig command does not work. Use SMIT to display the adapter settings with the following steps:
- Select
Devices
- Select
Communications
- Select
Adapter Type
- Select
Change/Show Characteristics of an Ethernet Adapter
- Change the
Transmit Jumbo Frames
option fromno
toyes
The SMIT screen looks like the following:
Change/Show Characteristics of an Ethernet Adapter
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]
Ethernet Adapter ent0
Description 10/100/1000 Base-TX PCI-X Adapter (14106902)
Status Available
Location 1H-08
Receive descriptor queue size [1024] +#
Transmit descriptor queue size [512] +#
Software transmit queue size [8192] +#
Transmit jumbo frames yes +
Enable hardware transmit TCP resegmentation yes +
Enable hardware transmit and receive checksum yes +
Media Speed Auto_Negotiation +
Enable ALTERNATE ETHERNET address no +
ALTERNATE ETHERNET address [0x000000000000] +
Apply change to DATABASE only no +
F1=Help F2=Refresh F3=Cancel F4=List
Esc+5=Reset Esc+6=Command Esc+7=Edit Esc+8=Image
Esc+9=Shell Esc+0=Exit Enter=Do