AB545A PCI-X 4-Port Gigabit Ethernet Card Installation Guide

Hardware and Software Installation Procedure

Optional Step: Conﬁgure Jumbo Frames Size (Jumbo frames are supported only at 1000 Mbit/s)

• Jumbo frames for the iether driver on HP-UX 11i v 1.0 and on11i v 2.0 of September 2004 (or later) have

an mtu_size in the range from 1501 to 9000 bytes.

If you are using Jumbo Ethernet frames, ensure that:

— all end stations on a given LAN

have the same maximum transmission unit (MTU) setting;

— intermediate stations such as switch ports in your LAN have an MTU equal to or greater than the end

station’s MTU.

• Obtain the PPA number of the card by entering lanscan.

• Choose one of the following two conﬁguration methods to permanently save your conﬁguration.

— use the GUI-based system admin manager (SAM).

To use SAM, type sam at the HP-UX system prompt; then double-click Networking and

Communications, Network Interface Cards. Click on the interface; select “Modify...” or “Conﬁgure”

from the Action menu, and then select “Advanced Options” to change the MTU size. See Ethernet

Support Guide for details, and then do the steps for verifying the MTU size;

— edit the following conﬁguration ﬁle using an editor such as “vi”:

/etc/rc.conﬁg.d/hpietherconf.

Set the mtusize by editing HP_IETHER_MTU[i]=

mtusize

and insert the proper interface name: HP_IETHER_MTU[i]=HP_IETHER_INTERFACE_NAME.

Remember that Jumbo Frames needs to be conﬁgured for each port. When the system reboots, the

interface will be conﬁgured for jumbo frame operation.

• Verify MTU change by entering netstat -rn. If MTU has not changed, enter the following commands:

$ifconfig lan

PPA_number

unplumb

$ifconfig lan

PPA_number ip_address

netmask

• To check (or verify) the current Ethernet frame size, enter:

$lanadmin -m

PPA_number

An alternative way to temporarily conﬁgure jumbo frame size is to enter:

lanadmin -M

mtu_size PPA_number

Using lanadmin will not preserve your settings across reboots.

The

PPA_number

is the one we obtained from the output of lanscan. For using Jumbo Frames with the iether

Gigabit Ethernet driver on HP-UX 11i v 1.0 or 11i v 2.0 of September 2004 (or later), set the mtu_size to a

number from 1501 to 9000 (bytes).

For Further Information

For further information on this card, please refer to http://docs.hp.com and then look under Networking and

Communications. This card’s information is primarily located under the subsection called “Gigabit Ethernet.”

1. In the Jumbo Frames discussion, “LAN” means that the end stations do not have any routers or

layer 3 switches in between them.