Sun Microsystems 10GBE XFP manual Enabling Jumbo Frames in a Linux Environment

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▼To Check Layer 3 Configuration

●Check the Layer 3 configuration by using the dladm command with the show-linkoption, as shown in the following example:

# dladm show-link
e1000g0	type: non-vlan	mtu: 1500	device: e1000g0
e1000g1	type: non-vlan	mtu: 1500	device: e1000g1
e1000g2	type: non-vlan	mtu: 1500	device: e1000g2
e1000g3	type: non-vlan	mtu: 1500	device: e1000g3
nxge0	type: non-vlan	mtu: 9194	device: nxge0
nxge1	type: non-vlan	mtu: 9194	device: nxge1
nxge38001	type: vlan 38	mtu: 9194	device: nxge1

Enabling Jumbo Frames in a Linux

Environment

This section describes how to enable jumbo frames in a Linux environment.

▼To Enable Jumbo Frames in a Linux Environment

1.Ensure that the nxge software is installed.

#modprobe nxge

2.Plumb the Sun x8 Express Dual 10 Gigabit Ethernet Fiber XFP Low Profile Adapter interface:

#ifconfig eth2 xxx.xxx.xx.xxx up

where xxx.xxx.xx.xxx is the IP address of the interface.

Chapter 6 Configuring the Jumbo Frames Feature 57

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Contents Sun Dual 10GbE XFP PCI Express Card User’s Guide Please Recycle Contents Configuring the nxge Device Driver Parameters Network ConfigurationConfiguring the Jumbo Frames Feature Configuring Link AggregationConfiguring VLANs Specifications Diagnostic SoftwareIndex Tables Page Figures Sun Dual 10GbE XFP PCI Express Card User’s Guide January EMC Declaration of ConformityXii Sun Dual 10GbE XFP PCI Express Card User’s Guide January How This Document Is Organized PrefaceUsing Unix Commands Typographic Conventions Shell PromptsRelated Documentation Documentation, Support, and TrainingThird-Party Web Sites Sun Welcomes Your Comments Page Product Overview ComponentsProduct Description Hardware and Software Requirements Features Sun Dual 10GbE XFP PCI Express Card User’s Guide January To Download the Driver on a Solaris Platform Installing and Setting Up the DriverFor x86 systems Uncompress the gzipped tar fileUnpack the tar file For Sparc systems, change to the following directory# /usr/sbin/pkgadd -d Select the packages you want to installTo Remove the Driver from a Solaris Platform Verify that the nxge driver is installed on the systemTo discover the driver packages run the pkginfo command To remove the driver packages run the pkgrm commandDownloading and Installing the Driver on a Linux Platform Login to your system# ifconfig -a grep eth # modprobe nxge To Remove the Driver From a Linux Platform # ethtool -i eth4 driver nxge version# rpm -e nxge-1.0-1 Sun Dual 10GbE XFP PCI Express Card User’s Guide January Installing the Adapter Installing the AdapterTo Install the Adapter Installing the Adapter Sun Dual 10GbE XFP PCI Express Card User’s Guide January Install the optical transceivers Installing an Optical TransceiverTo Install an Optical Transceiver Installing the Adapter Ok show-nets Verifying the Hardware InstallationTo Verify the Hardware Installation Connect the Ethernet cablesOk .properties Ok cd /pci@7c0/pci@0/pci@8/network@0,1Rebooting the System Ok boot -rOk device-end Configuring the Network Host Files Network Configuration# grep nxge /etc/pathtoinst # ifconfig nxge0 plumb ip-addressup# cat /etc/hosts To Set Up a 10-Gigabit Ethernet Port on a Diskless Client Edit the hosts file in the diskless client’s root directoryExport/root/client-name Network Configuration Find the root directory of the client system # grep client-name /etc/bootparams# shutdown -i0 -g0 -y Proceed with the Solaris Operating System installationOk boot /pci@7c0/pci@0/pci@8/network@0 Shut down and halt the client system# dladm show-dev Refer the boot-device-order image To Boot Over the Network on Solaris x86 and Linux SystemsSystem should reboot after saving the boot configuration Image pxe-mac-addr Press the F12 key to install the OS from the networkSun Dual 10GbE XFP PCI Express Card User’s Guide January Nxge Hardware and Software Overview Configuring the nxge Device Driver ParametersSetting nxge Driver Parameters on a Solaris Platform Setting Parameters Using the ndd UtilityNoninteractive and Interactive Modes To Specify Parameter Values Using the ndd Utility To Specify Device Instances for the ndd UtilityTo modify a parameter value, use the -setoption Setting Parameters Using the nxge.conf File # ndd /dev/nxge1 name to get/set ?Man prtconf Set the parameters for the nxge devices To Set Driver Parameters Using an nxge.conf FileFollowing parameters can be set using Locate the path names and the associated instance numbersSun Dual 10GbE XFP PCI Express Card User’s Guide January Configuring the nxge Device Driver Parameters Class-opt-ipv4-tcp = 100 class-opt-ipv4-udp = Save the nxge.conf file Tuning for Maximum Performance on a Solaris PlatformReboot the system # reboot -rTo Improve Performance on an AMD CPU Based Sun Platform Set ipipsqueuefanout=1 set ipsqueuesoftring=1Set ddimsixalloclimit=1 Configuring the nxge Device Driver Parameters To Set Parameters Using the ethtool Utility Setting Parameters on a Linux PlatformConfiguring the nxge Device Driver Parameters Following are some common parameters that can be changed # ethtool -k eth4 # ethtool -C eth4 rx-usecs # ethtool -c eth4# /usr/local/bin/nxgeconfig eth4 get classoptipv4udp # /usr/local/bin/nxgeconfig eth4 getNet.core.netdevmaxbacklog = Tuning for Maximum Performance on a Linux Platform# /usr/local/bin/nxgeconfig eth4 set classoptipv4tcp 0xfe0 Net.ipv4.tcpsack =# sysctl -p /etc/sysctlnxge.conf Set up the sysctl utilityConfiguring the Jumbo Frames Feature Checking Jumbo Frames ConfigurationsJumbo Frames Overview # kstat nxge1 grep rdcpackets To Show the Driver Statistics in a Solaris Environment# kstat Nxge38001 Enabling Jumbo Frames in a Solaris EnvironmentSet the maximum MTU for maximum performance To Check Layer 2 ConfigurationBoot -r # ifconfig nxge mtuEnabling Jumbo Frames in a Linux Environment To Check Layer 3 ConfigurationTo Enable Jumbo Frames in a Linux Environment Ensure that the nxge software is installedSet the MTU for maximum performance # ifconfig ethx mtu# ifconfig eth4 To Show the Driver Statistics in a Linux EnvironmentConfiguring the Jumbo Frames Feature Sun Dual 10GbE XFP PCI Express Card User’s Guide January Configuring Link Aggregation Configuring Link Aggregation in a Solaris EnvironmentOverview of Link Aggregation To Configure Link Aggregation in a Solaris Environment # dladm show-aggr -s Use the dladm show-aggr-scommand to display statistics# ifconfig aggr33 plumb # ifconfig aggr33 192.168.1.1/24 broadcast + up# dladm show-aggr -L Configuring Link Aggregation in a Linux EnvironmentTo Configure Bonding for Multiple nxge Interfaces Load the bonding driverConfigure bond0 interface Sun Dual 10GbE XFP PCI Express Card User’s Guide January Overview of VLANs Configuring VLANsVlan Configuring VLANs in a Solaris Environment 2Ethernet Tag Header Format To Configure Static VLANsEnsure that the nxge module is loaded Configuring VLANs in a Linux EnvironmentTo Configure VLANs in a Linux Environment # ifconfig -aInsert the Vlan module Configure the nxge Vlan eth2 in this example# /sbin/vconfig add eth2 # ifconfig eth2.5 xxx.xxx.xx.xxx upConnectors SpecificationsTable A-1XFP Connector Characteristics Performance SpecificationsPower Requirements Physical CharacteristicsSun Dual 10GbE XFP PCI Express Card User’s Guide January SunVTS Diagnostic Software Diagnostic SoftwareUpdating SunVTS to Recognize the Adapter To Update SunVTS to Recognize the AdapterTo Use the netlbtest Using the SunVTS netlbtestSun Dual 10GbE XFP PCI Express Card User’s Guide January Index SymbolsSun Dual 10GbE XFP PCI Express Card User’s Guide January