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Speed & Duplexഀ | ഀ
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Switch link speed and duplex.ഀ Auto Negotiation : switch choose best speed automaticallyഀ 10 Mbps Half Duplex : highest linkഀ speed is 10 halfഀ 10 Mbps Full Duplex : highest linkഀ speed is 10 fullഀ 100 Mbps Half Duplex : highest linkഀ speed is 100 halfഀ 100 Mbps Full Duplex : highest linkഀ speed is 100 fullഀ 1.0 Gbps Full Duplex : highest linkഀ speed is 1000 fullഀ | ഀ
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NetworkAddressഀ | ഀ
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Change the MAC address of network cardഀ Please do not use broadcast or multicastഀ address. If so, the driver stops to load after the wrong MAC address changed.ഀ | ഀ
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IPv4 Checksum Offloadഀ | ഀ
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OS offloads IPv4 checksum calculation toഀ hardwareഀ Rx & Tx Enabled : Both RX and TXഀ are enabledഀ Tx Enabled : OS only offloads TX packetsഀ to hardwareഀ Rx Enabled : OS only offloads RXഀ packets to hardwareഀ Disabled : OS use software routine toഀ calculate checksumഀ | ഀ
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TCP Checksum Offload (IPv4)ഀ | ഀ
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OS offloads IPv4 TCP checksum calculationഀ to hardwareഀ Options are same as IPv4 Checksum Offloadഀ | ഀ
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UDP Checksum Offload (IPv4)ഀ | ഀ
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OS offloads IPv4 UDP checksum calculationഀ to hardwareഀ Options are same as IPv4 Checksum Offload | ഀ
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Large Send Offload (IPv4)ഀ | ഀ
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OS offloads large TCP/IPv4 segmentationഀ to hardware. This could improve transfer speed and reduce CPU utilization.ഀ | ഀ
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Large Send Offload v2 (IPv4)ഀ | ഀ
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OS offloads large TCP/IPv4 segmentationഀ to hardware. This is a newer specification than Large Send Offload (IPv4)ഀ | ഀ
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Large Send Offload v2 (IPv6)ഀ | ഀ
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OS offloads large TCP/IPv6 segmentationഀ to hardware.ഀ | ഀ
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Flow Controlഀ | ഀ
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Flow control could stop TX side sendingഀ to prevent lost packets.ഀ | ഀ
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Priority & VLANഀ | ഀ
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Priority & VLAN Enabled : Bothഀ Priority and VLAN are enabledഀ Priority Enabled : Only support priorityഀ and keep VLAN ID = 0ഀ VLAN Enabled : Only support VLAN and keepഀ priority = 0ഀ Priority & VLAN Disabled : Bothഀ Priority and VLAN are disabledഀ | ഀ
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InterruptModerationഀ | ഀ
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The interrupts are automatically triggerഀ in a period. This reduces CPU utilization and improve throughput.ഀ | ഀ
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Receive Buffersഀ | ഀ
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Receive bufferഀ | ഀ
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Transmit Buffersഀ | ഀ
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Transmit bufferഀ | ഀ
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Jumbo Frameഀ | ഀ
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2KB MTU : MTU is 2*1024 bytesഀ 3KB MTU : MTU is 3*1024 bytesഀ 4KB MTU : MTU is 4*1024 bytesഀ 5KB MTU : MTU is 5*1024 bytesഀ 6KB MTU : MTU is 6*1024 bytesഀ 7KB MTU : MTU is 7*1024 bytesഀ | ഀ
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Q. What is Jumbo Frame What is the purpose of this featureഀ A. This feature is for performance. Itഀ increases the maximum length of one packet.ഀ ഀ It is out of ethernet specificഀ and has ethernet switch/hub compatibility. If the ethernet switch could notഀ support the jumbo frame, the packet will be discarded.ഀ Users may directly link the 2ഀ machines to avoid the maximum length limitation but this also limit theഀ connectivity.ഀ Driver will disable Large Sendഀ Offload (IPv4) after user enables this feautre, TCP/IP could has betterഀ performance if it use jumbo frame without large send. If users enable both ofഀ them, the driver automatically chooses Jumbo Packet.ഀ For switch compatibility andഀ TCP/IP performance, it is better to use Large Send Offload (IPv4) ratherഀ than Jumbo frameഀ ഀ PS:ഀ ഀ Althrough, the Advanced pageഀ has Disable, 2KB MTU, 3KB MTU, ... 7KB MTU. Driver will not enable theഀ option which exceeds the NIC hardware limitation.ഀ If exceeds, driver automatically decreases the length to aഀ proper value.ഀ ഀ How to verify jumboframe works :ഀ ഀ 1. Both sides enable theഀ jumboframe to a identical value.ഀ If two sides has differentഀ jumboframe length limitation, use smaller value.ഀ For example, cardbus 8169 andഀ PCI 8169 should use 3KB.ഀ 2. Both side must disableഀ firewall.ഀ 3. To avoid switch/hubഀ compatiblity issue , please connect the two NICs directly.ഀ 4. Ping a large packet to theഀ other machine. Pingഀ xxx.xxx.xxx.xxx -l 65000ഀ 5. If responses successfully,ഀ the jumboframe works.ഀ | ഀ
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Shutdown Wake-On-Lanഀ | ഀ
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Enabled : system could wakeup fromഀ shutdown by magic packetഀ Disabled : PHY turn off to reduce powerഀ consumption but could not wakeup by magic packetഀ | ഀ
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Q. What is Shutdown Wake-On-Lan ? Why have this feature ? Who requires to use this feature ?ഀ A. This feature is for power consumption.ഀ This affects shutdown mode (S5) power consumption.ഀ | ഀ
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Auto Disable Gigabit (PowerSaving)ഀ | ഀ
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Disabled : Always enable gigabitഀ Re-Link, Battery : auto disabled gigabitഀ when re-link and using batteryഀ Re-Link, Battery or AC : auto disabledഀ gigabit when re-linkഀ | ഀ
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Q. What is Auto Disable Gigabit ? Why have this feature ? Who requires to use this feature ?ഀ A. This feature is for power consumption.ഀ ഀ When users change the settingഀ to Re-Link and user unplugs and plugs network cable again, the driver willഀ automatically disable gigabit capability.ഀ Gigabit has much higher powerഀ consumption than 10/100 MBps. For notebook users, it is recommended to turnഀ on this to reduce power consumption.ഀ ഀ PS :ഀ ഀ This option MUST change toഀ Re-Link to enable Auto Disable Phy"ഀ | ഀ
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Auto Disable PCIe (PowerSaving)ഀ | ഀ
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Disabled : No disable PCI-e whenഀ disconnectedഀ Re-Link, Battery : auto disable PCI-eഀ when disconnected and using batteryഀ Re-Link, Battery or AC : auto disableഀ PCI-e when disconnectedഀ | ഀ
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Q. What is Auto Disable PCIe ? Why have this feature ? Who requires to use this feature ?ഀ A. This feature is for power comsumption.ഀ ഀ When users change the settingഀ to Enabled in battery mode and the network cable is unpluged, the driverഀ will automatically disable PCIe mechanism. This reduces the powerഀ comsumption.ഀ | ഀ
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Auto Disable PHY (PowerSaving)ഀ | ഀ
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Disabled : No disable PHY whenഀ disconnectedഀ Re-Link, Battery : auto disable PHY whenഀ disconnected and using batteryഀ Re-Link, Battery or AC : auto disable PHYഀ when disconnectedഀ | ഀ
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Q. What is Auto Disable PHY ? Why have this feature ? Who requires to use this feature ?ഀ A. This feature is for power consumption.ഀ ഀ When users change the settingഀ to Enabled and the network cable is unpluged, the driver will automaticallyഀ disable PHY.ഀ To use this feature, user MUSTഀ enable Auto Disable Gigabit first. ഀ Because gigibit link establishment takes longer time, driver needsഀ user disable gigabit to reduce the linking time.ഀ ഀ PS.ഀ ഀ If both of them enabled, theഀ linking time will be increased but power consumption reduced. The linkingഀ time about 5 seconds.ഀ | ഀ
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Receive Side Scalingഀ | ഀ
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Disabled : RSS disabledഀ Enabled : RSS enabledഀ | ഀ
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1. ഀ This feature is for better CPUഀ utilization balance while internet browsing and file copying.ഀ 2. ഀ This is especially good for complexഀ homepage content with a lot of pictures.ഀ ഀ Because OS will create one TCPഀ connection for each picture. Those TCP connections will dispatch to differentഀ CPUs. From driver layer to application layer, data transfer and pictureഀ decoding runs on different CPU.ഀ ഀ 3. ഀ This feature could not incoreaseഀ total throughput. It designed forഀ better CPU utilization.ഀ ഀ The network performanceഀ benchmark tool may show that the total throughput decreased when RSS enabled.ഀ ഀ 4. ഀ It is recommend end-user who careഀ better CPU utilization to enable this feature.ഀ ഀ 5. ഀ When RSS enabled, driver allocatesഀ two distinct receive buffer. The receiving buffer size is two times than RSSഀ disabled.ഀ | ഀ
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