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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide

52

IPv4 Checksum Offload

The IPv4 Checksum Offload feature allows the ExpressCard to verify the 
IPv4 checksum to enhance IPv4 receive and transmit performance and 
reduce CPU utilization.

To enable or disable the IPv4 Checksum Offload feature, do the following:

1. Access the Advanced Properties.

See “Accessing Advanced Properties” on page 47. 

2. Select 

IPv4 Checksum Offload 

in the Property box.

The IPv4 Checksum Offload page is displayed as shown in Figure 30.

Figure 30. IPv4 Checksum Offload Page

3. Select one of the following options:

Disabled —

 The CPU verifies IPv4 checksum.

Rx & Tx Enabled —

 The ExpressCard verifies IPv4 Checksum for 

both receiving and transmitting packets. This is the default setting.

Rx Enabled —

 The ExpressCard verifies IPv4 Checksum only for 

receiving packets.

Tx Enabled —

 The ExpressCard verifies IPv4 Checksum only for 

transmitting packets.

4. Click 

OK

.

Содержание AT-2874SC

Страница 1: ...613 001873 Rev A AT 2874SX Gigabit Ethernet Fiber ExpressCard AT 2874SX SC Installation and User s Guide...

Страница 2: ...rks or registered trademarks of their respective owners Allied Telesis Inc reserves the right to make changes in specifications and other information contained in this document without prior written n...

Страница 3: ...may cause harmful interference to radio or television reception which can be determined by turning the equipment off and on The user is encouraged to try to correct the interference by one or more of...

Страница 4: ...ty Statements Important The indicates that a translation of the safety statement is available in a PDF document titled Translated Safety Statements posted on the Allied Telesis website at www alliedte...

Страница 5: ...Accessing Device Manager 30 Accessing Device Manager on Windows 8 30 Accessing Device Manager on Windows Vista or Windows 7 32 Accessing Device Manager on Windows XP 33 Uninstalling Driver Software 3...

Страница 6: ...Checksum Offload IPv6 68 Transmit Buffers 70 UDP Checksum Offload IPv4 71 UDP Checksum Offload IPv6 73 Wake on Magic Packet 75 Wake on Pattern Match 76 Appendix A Specifications 77 Physical Specificat...

Страница 7: ...guide explain how to install the ExpressCard on a laptop computer install and uninstall the driver software and configure the advanced properties The AT 2874SX ExpressCard has one model available AT 2...

Страница 8: ...tes provide additional information Caution Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data Warning Warnings inform you that performing...

Страница 9: ...handise Authorization RMA and contact Allied Telesis technical experts USA and EMEA phone support Select the phone number that best fits your location and customer type Hardware warranty information L...

Страница 10: ...AT 2874SX Gigabit Ethernet Fiber ExpressCard Installation and User s Guide 10...

Страница 11: ...overview of the AT 2874SX Gigabit Ethernet Fiber ExpressCard It contains the following sections Description on page 12 Supported Operating Systems on page 14 Features on page 15 Contents of Your Shipm...

Страница 12: ...nto your laptop computer install driver software To insert the ExpressCard into your laptop see Chapter 2 Installing the Hardware on page 19 To install driver software see Chapter 3 Installing the Dri...

Страница 13: ...The stabilizer as shown in Figure 4 is a plastic bracket to help the ExpressCard fit into the 54mm PCI ExpressCard slot Allied Telesis recommends utilizing the stabilizer when installing the ExpressC...

Страница 14: ...r detailed information Driver for Linux Systems If your Linux system has an inbox driver for the AT 2874SX ExpressCard you do not need to install a driver If your Linux system does not have a driver f...

Страница 15: ...0BASE SX port with an SC fiber optic adapter Link Activity LED PCI ExpressCard Interface Jumbo frames Checksum offload Flow control IEEE 802 3x Traffic optimization IEEE 802 1p PXE remote boot RoHS Co...

Страница 16: ...into the 54mm PCI card slot of your laptop computer attach the stabilizer to your AT 2874SX ExpressCard Note The AT 2874SX ExpressCard is not shipped with a software driver CD You must download the se...

Страница 17: ...products are covered under limited warranties All Allied Telesis warranties are subject to and provided only on the terms and conditions set out in the Allied Telesis Limited Warranties listed on the...

Страница 18: ...AT 2874SX Gigabit Ethernet Fiber ExpressCard Installation and User s Guide 18...

Страница 19: ...the Hardware This chapter contains the following sections Reviewing Safety Precautions on page 20 Pre Installation Checklist on page 21 Installing the AT 2874SX ExpressCard on page 22 Connecting the N...

Страница 20: ...atements from our web site at www alliedtelesis com support Warning This is a Class 1 LED product L1 Warning Do not stare into the laser beam L2 Warning Do not look directly at the fiber optic cable e...

Страница 21: ...check the following list 1 Verify that your laptop is using the latest BIOS 2 Check the ExpressCard for visible signs of damage particularly on the edge connector Caution Do not attempt to install a d...

Страница 22: ...ticular laptop refer to the manual that was supplied with your laptop Note To perform the following procedure you need to supply a pen To install an AT 2874SX ExpressCard do the following 1 Review the...

Страница 23: ...essing the Button The button pops out along with the plate See Figure 7 Figure 7 The Button and Plate after Pressing the Button 4 Remove the plate from the laptop See Figure 8 on page 24 Keep the plat...

Страница 24: ...as shown in Figure 9 Note When installing the ExpressCard in the 34mm ExpressCard slot skip this step Figure 9 Attaching the Stabilizer to the AT 2874SX ExpressCard 6 Applying even pressure at both c...

Страница 25: ...nit into the 54mm Slot Caution Do not use excessive force when seating the card Applying excess force may damage the system or the card If the card resists seating remove it from the system realign it...

Страница 26: ...tic ports contain a Class 1 LED device When the port is disconnected always cover them with the provided plug Exposed ports may cause skin or eye damage 2 Connect one end of the fiber optic cable to t...

Страница 27: ...software for the AT 2874SX ExpressCard onto your Windows Operating system This chapter contains the following topics Overview on page 28 Accessing Device Manager on page 30 Uninstalling Driver Softwar...

Страница 28: ...x driver Windows XP Windows Vista and Windows 7 do not come with an inbox driver for the AT 2874SX ExpressCard however the system may install a driver automatically if the Windows operating system was...

Страница 29: ...physically install the AT 2874SX ExpressCard your Windows systems detects a new adapter and may install a driver that exists in your system You must uninstall the driver before executing the setup pr...

Страница 30: ...your operating system follow one of the procedures below Accessing Device Manager on Windows 8 next Accessing Device Manager on Windows Vista or Windows 7 on page 32 Accessing Device Manager on Window...

Страница 31: ...Windows 8 3 Select Device Manager from the menu The Device Manager window opens as shown in Figure 13 Note The Windows system detects a new hardware and creates an entry as Ethernet Controller Marvell...

Страница 32: ...ght click the Computer icon on the desktop and select Properties The System window is opened as shown in Figure 14 Figure 14 System Window on Windows Vista and Windows 7 2 Click Device Manager on the...

Страница 33: ...Windows 7 Accessing Device Manager on Windows XP To access Device Manager on Windows XP do the following 1 Right click the My Computer icon on the desktop and select Properties The System Properties w...

Страница 34: ...Tab The Hardware page is shown in Figure 17 Figure 17 Hardware Page on Windows XP 3 Click Device Manager The Device Manager window opens as shown in Figure 13 on page 31 Note The Windows system detect...

Страница 35: ...Chapter 3 Installing the Driver Software 35 Figure 18 Device Manager Window on Windows XP...

Страница 36: ...that the operating system automatically installed 1 Open Device Manager For instructions on how to open Device Manager see Accessing Device Manager on page 30 2 In the Device Manager window expand the...

Страница 37: ...Chapter 3 Installing the Driver Software 37 Note This option is not available for Windows XP 6 Click OK to complete the uninstall...

Страница 38: ...etup file do the following 1 Open a web browser such as Internet Explorer or FireFox on your system and enter the following http www alliedtelesis com support software 2 The Allied Telesis Software Do...

Страница 39: ...stem See Downloading the Setup File on page 38 2 Extract files from the zip folder 3 Open the folder including uncompressed files Figure 21 shows an example Figure 21 Setup File 4 Double click the set...

Страница 40: ...Yes to allow Marvell Miniport Driver to be installed The Marvell Miniport Driver Setup Wizard window comes up See Figure 22 Figure 22 Marvell Miniport Driver Setup Wizard 6 Click Next The Licence Agr...

Страница 41: ...accept the terms of the agreement select the first option and click Install When the installation is completed the Installation Complete window is displayed See Figure 24 Figure 24 Installation Comple...

Страница 42: ...AT 2874SX Gigabit Ethernet Fiber ExpressCard Installation and User s Guide 42 Figure 25 Finishing Setup Wizard 10 Click Finish...

Страница 43: ...e 54 Large Send Offload v2 IPv4 on page 56 Large Send Offload v2 IPv6 on page 57 Log Status Messages on page 58 Max IRQ per Sec on page 59 Network Address on page 60 Receive Buffers on page 62 Receive...

Страница 44: ...e the advanced property settings you must have Administrator privileges When you upgrade the driver software the settings of the advanced properties may change Verify the settings after upgrading the...

Страница 45: ...ws Vista and Windows 7 Table 2 Advanced Properties for Windows XP Driver Version Advanced Property 11 45 3 3 Flow Control on page 49 Interrupt Moderation on page 50 Jumbo Packet on page 53 Large Send...

Страница 46: ...68 Transmit Buffers on page 70 UDP Checksum Offload IPv4 on page 71 UDP Checksum Offload IPv6 on page 73 Table 3 Advanced Properties for Windows Vista and 7 Continued Driver Version Advanced Property...

Страница 47: ...u want to change its setting 1 To access the Device Manager follow one of these procedures Accessing Device Manager on Windows XP on page 33 Accessing Device Manager on Windows Vista or Windows 7 on p...

Страница 48: ...AT 2874SX Gigabit Ethernet Fiber ExpressCard Installation and User s Guide 48 3 Click the Advanced tab The Advanced Properties window opens as shown in Figure 27 Figure 27 Advanced Properties Window...

Страница 49: ...isable the Flow Control feature do the following 1 Access the Advanced Properties See Accessing Advanced Properties on page 47 2 Select Flow Control in the Property box The Flow Control page is displa...

Страница 50: ...on decreases however the latency may increase To specify the interrupt rate see Max IRQ per Sec on page 59 Note Windows 8 does not support the Max IRQ per Sec property See Advanced Properties for Wind...

Страница 51: ...ifying Advanced Properties 51 3 Select one of the following options Disabled The Interrupt Moderation feature is disabled Enabled The Interrupt Moderation feature is enabled This is the default settin...

Страница 52: ...e Accessing Advanced Properties on page 47 2 Select IPv4 Checksum Offload in the Property box The IPv4 Checksum Offload page is displayed as shown in Figure 30 Figure 30 IPv4 Checksum Offload Page 3 S...

Страница 53: ...ever the network must be capable of supporting the oversized Ethernet frames To change the Jumbo Packet setting do the following 1 Access the Advanced Properties See Accessing Advanced Properties on p...

Страница 54: ...pports packets up to 256kb overrides the Large Send Offload IPv4 feature if both features are enabled For more information see Large Send Offload v2 IPv4 on page 56 Note Windows XP does not support th...

Страница 55: ...nced Properties 55 3 Select one of the following options Disabled This feature is disabled Enabled The adapter segments large packets up to 64kb for IPv4 traffic before sending them out This is the de...

Страница 56: ...Send Offload IPv4 feature if both features are enabled To enable or disable the Large Send Offload v2 IPv4 feature do the following 1 Access the Advanced Properties See Accessing Advanced Properties o...

Страница 57: ...ad v2 IPv6 feature do the following 1 Access the Advanced Properties See Accessing Advanced Properties on page 47 2 Select Large Send Offload v2 IPv6 in the Property box The Large Send Offload v2 IPv6...

Страница 58: ...s Messages in the Property box The Log Status Messages page is displayed as shown in Figure 35 Figure 35 Log Status Message Page 3 Select one of the following options None The adapter does not generat...

Страница 59: ...change the Max IRQ per Sec value do the following 1 Access the Advanced Properties See Accessing Advanced Properties on page 47 2 Select Max IRQ per Sec in the Property box The Max IRQ per Sec page is...

Страница 60: ...AT 2874SX ExpressCard When you change the MAC address ensure that a unique MAC address is assigned To assign or change the Network Address do the following 1 Access the Advanced Properties See Access...

Страница 61: ...The address must be unique The address consists of a 12 digit hexadecimal number for example 020C46005501 The address must start with 02 in the most significant byte for example 020304050607 Do not as...

Страница 62: ...in receiving traffic but consumes more system memory To change the Receive Buffers value do the following 1 Access the Advanced Properties See Accessing Advanced Properties on page 47 2 Select Receive...

Страница 63: ...multiprocessor system To enable or disable the Receive Side Scaling feature do the following 1 Access the Advanced Properties See Accessing Advanced Properties on page 47 2 Select Receive Side Scaling...

Страница 64: ...74SX ExpressCard Note You see the Speed Duplex property as shown in Figure 40 when the proper Allied Telesis driver is not installed To install driver software properly see Chapter 3 Installing the Dr...

Страница 65: ...the CPU To modify the TCP UDP Checksum Offload IPv4 setting do the following 1 Access the Device Manager on your operating system See Accessing Advanced Properties on page 47 2 Select TCP UDP Checksu...

Страница 66: ...nd verify the TCP checksum of receiving IPv4 packets in order to take load off from the CPU To modify the TCP Checksum Offload IPv4 setting do the following 1 Access the Device Manager on your operati...

Страница 67: ...les the feature for both receiving and transmitting IPv4 packets This is the default setting Disabled Disables the feature for both receiving and transmitting Rx Enabled Enables the feature only for r...

Страница 68: ...verify the TCP checksum of receiving IPv6 packets in order to load off from the CPU To enable or disable the TCP Checksum Offload IPv6 feature do the following 1 Access the Device Manager on your oper...

Страница 69: ...les the feature for both receiving and transmitting IPv6 packets This is the default setting Disabled Disables the feature for both receiving and transmitting Rx Enabled Enables the feature only for r...

Страница 70: ...Buffers value do the following 1 Access the Device Manager on your operating system See Accessing Advanced Properties on page 47 2 Select Transmit Buffers in the Property box The Transmit Buffers page...

Страница 71: ...checksum of receiving IPv4 packets in order to take load off from the CPU To modify the UDP Checksum Offload IPv4 setting do the following 1 Access the Device Manager on your operating system See Acc...

Страница 72: ...Rx Tx Enabled Enables the feature for both receiving and transmitting IPv4 packets This is the default setting Disabled Disables the feature for both receiving and transmitting Rx Enabled Enables the...

Страница 73: ...checksum of receiving IPv6 packets in order to take load off from the CPU To modify the UDP Checksum Offload IPv6 setting do the following 1 Access the Device Manager on your operating system See Acc...

Страница 74: ...Rx Tx Enabled Enables the feature for both receiving and transmitting IPv6 packets This is the default setting Disabled Disables the feature for both receiving and transmitting Rx Enabled Enables the...

Страница 75: ...rd Note You see the Wake on Magic Packet property as shown in Figure 47 when the proper Allied Telesis driver is not installed To install driver software properly see Chapter 3 Installing the Driver S...

Страница 76: ...T 2874SX ExpressCard Note You see the Wake on Pattern Match property as shown in Figure 48 when the proper Allied Telesis driver is not installed To install driver software properly see Chapter 3 Inst...

Страница 77: ...cm x 3 4 cm 5 4 in x 1 3 in Environmental Specifications Operating Temperature 0 C to 40 C 32 F to 104 F Storage Temperature 25 C to 70 C 13 F to 158 F Relative Humidity 5 to 90 non condensing Altitud...

Страница 78: ...AT 2874SX Gigabit Ethernet Fiber ExpressCard Installation and User s Guide 78...

Страница 79: ...iber Optic Connectors This appendix provides how to clean fiber optic connectors and consists of the following sections Overview on page 80 Cleaning Using a Cartridge Type Cleaner on page 81 Cleaning...

Страница 80: ...he fiber completely invisible to the naked eye can disrupt light transmission and lead to failure of the component or of the entire system Figure 50 shows part of the end face of an unclean and clean...

Страница 81: ...ol air to clean a fiber optic connector To clean a fiber optic connector using a cartridge cleaner perform the following procedure 1 With one hand hold the cartridge cleaner and push the lever on the...

Страница 82: ...at the top and rub downwards at least 2 times Caution Failing to pick up the ferrule tip when you reach the bottom of the cleaning surface can result in static electricity that can damage the fiber o...

Страница 83: ...sizes for use on SC and MU connectors respectively Note NEVER use a household cotton swab and or alcohol to clean a fiber optic connector A cotton swab or alcohol may leave a residue on the ferrule ti...

Страница 84: ...ExpressCard Installation and User s Guide 84 3 If a fiber inspection scope is available use the scope to inspect the connector to make sure that it is clean 4 Reconnect the cable to the port or protec...

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