Silicon Power Computer & comm 74669003 manual MTU Size Settings, Irix Conﬁguration

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3: Operating the Adapter

•Linux:

#ifconfig ethN down

#ifconfig ethN up

Conﬁguration

IRIX and Linux use different conﬁguration tools.

IRIX Conﬁguration

The conﬁguration of the adapter is controlled by a number of parameters, which are discussed in the IRIX /etc/config/xgcmd.options ﬁle.

To change the conﬁguration of your adapter, use the xgcmd command. For more information, see the xgcmd man page.

Linux Conﬁguration

To change the conﬁguration of your adapter, use the ethtool(8) command. For more information, see the ethtool(8) 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 can increase network throughput 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

14	007–4669–003

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Contents SGI 10-Gigabit Ethernet Network Adapter User’s Guide Contributors TUV Page New Features Page Record of Revision Version DescriptionPage Contents Glossary Index About this Guide AudienceImportant Information Scope of this Guide Related PublicationsObtaining Publications ConventionsUser input Product Support Reader CommentsSGI Chapter Features CablingConﬁguration Limits ToolsPage Connecting the Adapter to a Network Connecting the Adapter to a Network 2Release 2 Card Fibre Optic Connections Page Using LEDs to Determine Functionality Operating the AdapterVerifying Functionality Verifying Adapter Recognition LinkLinux Adapter Recognition Veriﬁcation Verifying that the Adapter is Properly Conﬁgured and Enabled Enabling the AdapterResetting the Adapter Linux Adapter Conﬁguration VeriﬁcationIrix Conﬁguration MTU Size SettingsConﬁguration Linux ConﬁgurationOutput should look similar to the following Page Performance Tuning Irix Performance TuningJumbo Frames and Irix Multibuffer Mode and Irix Read/Write Size and IrixSocket Buffer Size and Irix Jumbo Frames and SGI ProPack SGI ProPack Performance TuningSocket Read and Write Buffer Sizes for SGI ProPack Read/Write Size and SGI ProPackPerformance Tuning Glossary CD-ROM CDTCP/IP Index Index Xgcmd diagnostic tool