User`s guide

SGI

10-Gigabit Ethernet Network Adapter User’s Guide

Resetting the Adapter

In the unlikely event that you need to reset the adapter, enter the following, where N

is the adapter number:

• IRIX:

# ifconfig xgN down

# ifconfig xgN up

• Linux:

# ifconfig ethN down

# ifconfig ethN up

Conﬁguration Parameters

The conﬁguration of the adapter is controlled by a number of parameters, which are

discussed in the /etc/config/xgcmd.options ﬁle.

To change the conﬁguration of your adapter, use the xgcmd command. For more

information, see the xgcmd man page.

MTU Size Settings

The maximum transmission unit (MTU) size is controlled by the mtu mtu_size switch

of the ifconfig command. The most common MTU sizes are 1500 bytes

(standard-size Ethernet frames) and 9000 (jumbo Ethernet frames). The adapter

supports an MTU size of up to 9600 bytes. Conﬁguring the adapter to use jumbo

frames will increase network bandwidth and reduce CPU load, but only if the

network supports jumbo frames.

To conﬁgure the MTU size, follow these steps:

1. At the command prompt, enter the following command:

netstat -i

The output will display information about the network adapters currently

installed in the system, as follows:

Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll

xg1 1500 10.50.1 system.name 0 0 1 0 0

007–4669–001 11