Ethernet Support Guide for HP-UX 11i v3

Table 11 Allowable MTU sizes for each HP-UX 11i v3 driver
Allowable MTU SizesDriver/bundle name
257 through 1500btlan (included
with HP-UX
installations)
257 through 1500, and 9000iether /IEther-00
1024 through 1500, and 9000gelan /GigEther-00
257 through 1500, and 9000igelan
/GigEther-01
257 through 1500, and 9000ixgbe
/10GigEthr-00
257 through 1500, and 9000icxgbe/10Gigethr-01
257 through 1500, and 9000iexgbe
/10GigEthr-02
257 through 1500, and 9000iocxgbe
/10GigEthr-03
3.7.1 Before enabling Jumbo Frames
Before Jumbo Frames are used between end stations, ensure the following with the nwmgr command:
• The end stations have the same maximum transmission unit (MTU) setting (this discussion
assumes that the end stations do not have any routers or layer 3 switches between them)
• Intermediate stations such as switch ports in your LAN have an MTU equal to or greater than
the end station’s MTU
NOTE: Certain versions of the 10GigEthr-02 (iexgbe) product and supported hardware impose
limitations on flow control and the use of Jumbo Frames. As of version B.11.31.1209, receive flow
control must be disabled when Jumbo Frames are used.
For details about Jumbo Frame support for your version of 10GigEthr-02, refer to the release notes
for that version.
The btlan driver does not support Jumbo Frames.
3.7.2 Displaying current MTU/Jumbo Frame settings
The following example shows how to display the current setting for a device's MTU size.
30 Setting and displaying driver Ethernet parameters