Transcript
QuickSpecs
Compaq PCI-to-Gigabit Ethernet Server NICs for Compaq Alpha CPUs
MODELS
Compaq DEGPA-SA PCI to 1000BASE-SX (MMF) Gigabit Ethernet NIC Compaq DEGPA-TA PCI to 1000BASE-T (UTP) Gigabit Ethernet NIC
OVERVIEW Compaq now offers both fiber 1000BASE-SX (MMF), and copper based 10/100/1000BASE-T (UTP) Gigabit Ethernet (GbE) connectivity for its Alpha based Servers and Workstations. The newest member of the GbE NIC family, the DEGPA-TA, provides Unshielded Twisted Pair (UTP) CAT 5 or better Gigabit Ethernet connectivity. The DEGPA-TA can be connected to 10, 100, or 1000 Mbps Ethernet networks, and will auto-negotiate to operate at the highest common mode (speed, & half or full-duplex) available to both ends. For this reason, the DEGPA-TA can be used to “future proof” today’s 10 or 100 Mbps Ethernet network applications by allowing transparent migration to Gigabit. The Compaq PCI-to-Gigabit Ethernet NIC family propels available Ethernet bandwidth two orders of magnitude from 10 Mbps to 100 Mbps to 1000 Mbps. At the same time, the NIC architecture incorporates hardware accelerator features to minimize host CPU packet processing overhead at both the protocol stack and driver levels. You get standards based full-duplex point-to-point, and switched Gigabit Ethernet connectivity, along with, intelligent direct memory access management to minimize CPU overhead. The Compaq PCI-to-Gigabit Ethernet NIC is capable of delivering sustainable line rates approaching 1 Gbps, minimizing the chance of the NIC being a bottleneck for your high-performance network applications. The result – a high-performance, low-latency, Ethernet connectivity solution to optimize both Alpha system utilization, and application performance. It is the ideal way to get the most out of your long-term Internet/intranet system investments.
NIC ASIC TECHNOLOGY Based on the award winning TIGON II ASIC originally developed by Alteon WebSystems, the Compaq PCI-to-Gigabit Ethernet NIC provides the highest performance GbE connectivity available in the industry. The ASIC was architected to address the throughput and system utilization requirements of today’s high-performance 64 bit server platforms This advanced TIGON II ASIC integrates dual intelligent DMA channels, a Universal 32/64 bit, 33-66 MHz PCI 2.1 bus interface, and a pair of embedded 32-bit RISC processors. It is these powerful on-chip RISC processors, together with other hardware based protocol accelerator features, that enable the Compaq PCI-to-Gigabit Ethernet NIC to deliver the highest line rates, and consume the least host CPU overhead. Full-Duplex Gigabit Ethernet The ASIC implements separate read and write DMA paths to support full-duplex Gigabit Ethernet connectivity. Each DMA channel is capable of sustaining near gigabit per second line rates across a 64 bit PCI bus. This ensures that the Compaq PCI-to-Gigabit Ethernet NIC will not be a bottleneck in highperformance data networking applications. Built-in intelligence to minimize packet latency and system overhead Dynamic, load driven Interrupt rate, and adjustable PCI burst length - The Compaq PCI-to-Gigabit Ethernet NIC operating at 1Gbps line rates, protects your system from being overrun by excessive receive interrupts. The NIC dynamically regulates its interrupt frequency based on Ethernet traffic load, and Host CPU PCI I/O bus latency. For example, when traffic is light, the NIC interrupts the host after receiving every packet to minimize network latency. In heavy traffic, the NIC is able to optimize host efficiency by dynamically adjusting the CPU interrupt rate - (receiving back-to-back packets and issuing a single interrupt only when buffer space is low or its timer has expired). In addition, the PCI bus burst size can be set to compliment the host CPU’s PCI bus bridge FIFO and/or cache line size to further optimize system level performance. These features help to maximize the sustainable network throughput, minimize the host CPU overhead, and leave more host CPU cycles available to applications.
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QuickSpecs
Compaq PCI-to-Gigabit Ethernet Server NICs for Compaq Alpha CPUs
N I C A S I C T E C H N O L O G Y (continued) Standard Ethernet and Jumbo Frame Support By default, the Compaq PCI-to-Gigabit Ethernet NIC supports the standard 1518 byte maximum Ethernet frame size. In addition, when connected pointto-point with another cooperating NIC or switch, the Compaq PCI-to-Gigabit Ethernet NICs can transfer Jumbo Frames of up to 9,000 bytes in length. The use of Jumbo Frames further reduces system level packet processing overhead down to one third of that required to process standard frame sizes. (Similar to FDDI with its 4,500 byte maximum packet size.) Any application that transfers large files, or program images can benefit from the use of Jumbo Frames. However, realizing the benefits of this capability is heavily dependent on protocol stack and driver implementations, as well as, being dependent on the ability of the network infrastructure to pass jumbo frames end-to-end. If you intend to take advantage of Jumbo Frames in your application, it is incumbent on you to confirm that the other vendor network products involved: (1) Support Jumbo Frames, and (2) are known to interoperate with either Compaq’s DEGPA family of GbE NICs, or the AceNIC previously available from Alteon WebSystems, and now from 3COM. Internal RISC Processors The ASIC contains two embedded 32-bit RISC processors to parse buffer descriptors, control the DMA engines and perform higher-level functions such as protocol filtering. Each processor has its own internal SRAM scratchpad to minimize the number of accesses to the 64 bit local memory bus. Dual Linked-List, Scatter/Gather DMA Engines Optimized Data Transfers - With dual, linked-list, scatter/gather DMA engines with byte boundary addressability, the Compaq PCI-to-Gigabit Ethernet NIC can move packet header and data to and from non-contiguous host memory locations, offloading CPU-consuming copy operations from the host. The PCI interface within the ASIC contains two independent linked-list, scatter/gather, DMA channels. One is used exclusively for host memory reads while the other is used exclusively for host memory writes. Protocol Offload The Compaq PCI-to-Gigabit Ethernet NIC provides built-in hardware to calculate TCP, UDP and IP checksums, and provide endian conversion on the fly. These mechanisms are available to host system device drivers and protocol stacks to off-load these CPU-intensive tasks. By utilizing these features, system resources can be better optimized for application processing, and at the same time ensuring high-performance network connectivity. However, realizing the benefits of these capabilities is operating system, protocol stack, and driver implementation dependent. Gigabit Ethernet MAC Built into the ASIC is an Ethernet MAC capable of running at 10/100/1000 Mbits/second. On the MMF DEGPA-SA support for 1000 mode is done via external Fibre Channel components operating at Gigabit Ethernet speeds. The copper DEGPA-TA utilizes both the Gigabit and 10/100 MII MAC interfaces, connected to BroadCOM PHY components, to offer 10/100/1000 Ethernet connectivity through a single RJ45 connector. The transmit and receive Gigabit Ethernet interfaces function independently of each other when configured for full-duplex operation. Auto (link) Negotiation The default configuration for auto negotiation of the Gigabit Ethernet link is auto. With this setting, the NIC will use IEEE 802.3z auto negotiation. If you are connecting the NIC to Gigabit Ethernet equipment that does not support auto negotiation, auto negotiation can be turned off by the respective host CPU driver.
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QuickSpecs
Compaq PCI-to-Gigabit Ethernet Server NICs for Compaq Alpha CPUs
SYSTEM LEVEL PERFORMANCE CONSIDERATIONS The Compaq PCI-to-Gigabit Ethernet NIC is a very high performance hardware device. When configured for full-duplex operation, installed by itself in a 64 bit Bus-Master PCI I/O bus, and coupled with highly optimized drivers and protocol stacks, the NIC is capable of presenting a PCI I/O bus load approaching 200 Megabytes Per Second (100 MB/Sec transmit and 100 MB/Sec Receive). System Level Factors That Can Impede Achievable Data Rates In many application environments today, achievable throughput can be constrained by mass-storage subsystem I/O rates, non-Gigabit optimized drivers, inefficient protocol stack implementations, host CPU available memory bandwidth, host CPU page rates, host CPU PCI bus efficiency, and interference from other lower performance devices plugged into the same bus. What You Should Expect Bottom line, “your mileage will vary” - Optimization in any particular application environment, on a particular host CPU platform, and running a particular operating system and protocol stack, may require some tuning and hardware re-configuration in order to achieve the most optimum application performance. Gigabit Ethernet performance with TCP/IP depends on several factors. Some of the influencing factors are as follows: CPU speed/utilization - the speed at which data can be delivered to the interface influences throughput. If your CPU(s) are busy doing several tasks, the task using Gigabit Ethernet may not get enough run time to deliver packets. In general, faster CPUs will deliver better throughput. PCI Bus speed/arbitration - fast access to the PCI bus is critical for high throughput. In general, using a 64bit PCI slot will provide better performance and use less PCI resources than a 32bit PCI slot. Putting the interface on the same PCI bus as other peripherals will degrade throughput. Each system type may also have different PCI to Host speed considerations (the speed at which the PCI to Host hardware allows the device to operate). Application/Transport factors - the standard TCP/IP applications (ftp, rcp, etc.) were not originally designed to run at Gigabit speeds. TCP applications that expect performance should consider using a message size of 65000 bytes and a window size of 128000 bytes. Even when an application is modified to use these settings, high throughput may not be attainable. This is particularly true when an application is waiting for data to send (data from a disk, for example). Regardless, in most applications where greater LAN bandwidth is required, a single GbE NIC provides a more robust system level solution (less host CPU overhead) than using multiple lesser bandwidth devices.
PRODUCT HARDWARE SPECIFICATIONS Gigabit Ethernet
IEEE 802.3z Gigabit Ethernet Standard IEEE 802.3ab IEEE 802.3u IEEE 802.3x “Pause” Frame Flow Control (X-on/X-off), Symmetric and Asymmetric IEEE 802.1Q VLAN Tagging (up to 64) – Requires Host CPU Protocol Stack Support
Bus Interface
PCI V2.1 bus master, 32/64-bit, 33-66 MHz with dynamic DMA optimization Universal, 3.3 & 5.0 volt bus signaling "Plug and Play" 33 to 66 MHz. 64-bit addressing, & 32/64-bit data path Arbitration: bus master. PCI bus transactions: All Read, Write and Termination operations. PCI interrupt: single interrupt. PCI bus error: both parity and system errors. PCI Hot Plug capable
Connections
Duplex SC fiber connector for 62.5/125 micron fiber, or 50/125 micron MMF Single RJ45 for CAT 5 or better UTP Copper
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Compaq PCI-to-Gigabit Ethernet Server NICs for Compaq Alpha CPUs
PRODUCT HARDWARE SPECIFICATIONS Operating Distance
(continued)
1000BASE-SX Shortwave (850 nm) Laser Fiber
Bandwidth
Maximum Length
62.5/125
160 MHz
721.78 ft/220 m
200 MHz
902.23 ft/275 m
400 MHz
1640.42 ft/500 m
500 MHz
1804.46 ft/550 m
50/125 1000BASE-T UTP Copper Cable – 4 Pair CAT 5 or better
328.08 ft/100 m
It is highly recommended that you read the “Running 1000BASE-T Gigabit Ethernet over Copper Cabling” white paper available from the Gigabit Ethernet Alliance web site when considering the use of installed CAT 5 cable, or planning for new copper cable installation: http://www.10gea.org/GEA_copper_0999_rev-wp.pdf Systems Supported
Compaq Alpha Host CPUs with PCI V2.1 or better compliant PCI I/O busses. Refer to your Alpha Host CPU Supported Options List to confirm support status, minimum supported driver, console revisions, as well as, any platform specific configuration restrictions. Single slot, short form factor
Dimensions
6.6 in x 3.75 in/16.764 cm x 9.53 cm PCI Short Card
Environmental
Fiber DEGPA-SA / -TA
Operating
Temperature
32° to 131°F/0° to 55°C
Humidity
5% to 85% (non-condensing)
Temperature
–40° to 185°F/–40° to 85°C
Humidity
5% to 95% (non-condensing)
Fiber DEGPA-SA
Copper DEGPA-TA
Maximum
14W (2.8 A @ +5 VDC)
15W (3.0 A @ +5.0 VDC)
Typical
10W (2.0A @ +5 VDC)
Storage Power
Certifications
Emissions: FCC Class B, VCCI Class B CE Safety: UL 1950, CUL, TUV
MTBF
Warranty
Fiber DEGPA-SA
Copper DEGPA-TA
Calculated using Belcore Reliability Prediction Procedure: 95°F/35°C (77°F/25°C ambient, w/50°F/10°C Rise): 1,029,666 Hours 113°F/45°C (77°F/25°C ambient, w/68°F/20°C Rise): 697,829 Hours
Calculated using Belcore Reliability Prediction Procedure 550,429 Hours at 113°F/45°C
Three Year – Return to Factory
ORDERING INFORMATION Gigabit Ethernet NIC Compaq Part Number
Description
DEGPA-SA
Universal PCI-to-1000BASE-SX (MMF) Gigabit Ethernet NIC using a duplex-SC connector.
DEGPA-TA
Universal PCI-to-10/100/1000BASE-T (UTP) Gigabit Ethernet NIC using a single RJ45 connector.
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QuickSpecs
Compaq PCI-to-Gigabit Ethernet Server NICs for Compaq Alpha CPUs
HOST PLATFORM SUPPORT & CONFIGURATION RULES Please refer to the AlphaServer and Workstation Supported Options Lists found at: http://www.Compaq.com/alphaserver/technology/index.html to determine support status (hardware configuration rules, minimum supported revisions for Operating Systems, Console Firmware, and other related layered products) on specific Alpha host CPU platforms.
MINIMUM SUPPORTED RELEASES AND MANDATORY PATCHES DEGPA-SA MMF OpSys
Minimum Supported Version
Mandatory Patches (1-FEB-1999)
MANDATORY Patch Description and Location
Tru64 UNIX
4.0E
None
None
Open VMS
7.1-2
Yes
The DECnet OSI EC04 update kit File Name: DEC-AXPVMS-DNVOSIECO4 V0701--4.PCSI The OpenVMS V7.1-2 Update02 minimum required patch kit File Name: DEC-AXPVMS-VMS712_UPDATE02-*.PCSI
LINUX DEGPA-TA UTP CAT 5 or better OpSys
Minimum Mandatory Update Supported or Patches Version (28-SEP-01)
MANDATORY Patch Description and Location
Tru64 UNIX
5.0A 5.1
Yes Yes
T64V50AAS0002-20001004.tar T64V51AS0002-20001204.tar
Open VMS
7.2-2
Yes
VMS722_LAN-V0100
7.3
Yes
VMS73_LAN-V0200
7.1-2
Yes
VMS712_LAN-V0300
7.2-1
Yes
VMS721_LAN-V0300
7.2-1H1
Yes
VMS721H1_LAN-V0200
LINUX
SuSE RH
SuSE 6.3 (2.2.17 Kernel); SuSE 7.1 (2.2.19 & 2.4.4 kernels) RH 6.2 (2.2.17 & 2.4.2 kernels); RH 7.0 (2.2.17 & 2.4.2 kernels)
FOR MORE INFORMATION For more information on the COMPAQ PCI-to-Gigabit Ethernet NIC and any of the full range of Compaq/Compaq networking solutions, or for the name of the Compaq reseller nearest you, call 800-282-6672 in the United States only. COMPAQ believes that the information in this publication is accurate as of its publication date; such information is subject to change without notice. COMPAQ is not responsible for any inadvertent errors. COMPAQ conducts its business in a manner that conserves the environment and protects the safety and health of its employees, customers, and the community. COMPAQ, DEC, COMPAQ, Compaq Tru64 UNIX, COMPAQ UNIX, OpenVMS, and the COMPAQ logo are trademarks of Compaq Computer Corporation. The following are third-party trademarks: IEEE is a registered trademark of the Institute of Electrical and Electronics Engineers, Inc. TIGON II, ACEswitch and ACEnic are the trademarks of 3COM. Copyright 2001 Compaq Computer Corporation. All Rights Reserved.
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