#SFP+ DAC

[johndjwan]

🌐 SFP+ vs. DAC Cables: The Networking Showdown 🌐

Okay, tech nerds, let’s talk cables! If you’re wiring up a data center or just curious, here’s the lowdown on SFP+ and DAC:

SFP+: The fancy, flexible one. These transceivers work with fiber or copper, stretching up to 80km! Perfect for long-haul connections or when you need options. Downside? A bit pricey. 💸

DAC: The budget king. Fixed copper cables with SFP+ ends, maxing out at 7m. Super cheap and low-power, ideal for connecting servers in the same rack. 🖥️

💡 TL;DR: DAC for short, cheap links; SFP+ for distance and versatility.

Got a cool networking setup? Tag us or share pics! Reblog if you’re a cable geek! 😎

[fibrecrossltd]

What is a DAC cable? | Fibrecorss

A DAC (Direct Attach Cable) is a high-performance, cost-effective networking solution designed for short-range, high-speed data connectivity in data centers and enterprise environments. These twinaxial copper cables feature integrated transceivers on both ends, enabling seamless connections between switches, routers, servers, and storage devices without the need for separate optical transceivers. DAC cables support a variety of speeds, including 10Gbps (SFP+), 25Gbps (SFP28), 40Gbps (QSFP+), 100Gbps (QSFP28), 200Gbps (QSFP56), 400Gbps (QSFP-DD), and up to 800Gbps.DAC cables are ideal for applications requiring low latency and high bandwidth

[informatykkriss]

IP-COM - X5308F - Budowa sieci 10Gbit w domu - SPEESTEST światłowód + stare komputery

Film ma charakter eksperymentu, sprawdzam na starych komputerach z kartami Mellanox i światłowodem lub kablem DAC - speedtest dla 10Gbit. w filmie uzyto: - switch IP-COM - X5308F - dwie karty mellanox dla kabla DAC oraz dwie karty mellanox dla światłowodu. przykładowe modele karty sa na tablicy w filmie, jednak w video pokazałem tylko Mellanox ConnectX 2. - 2x kabel DAC SFP-H10GB-CU7M - cztery wkładki SFP+ cisco 10gbit - dwa komputery o specyfikacji: CPU: i5-2500K RAM: 8GB ddr3 HDD: 256GB Kingston https://youtu.be/yNaFM242th8 Read the full article

[maychusieutoc1]

Cáp DAC Cisco SFP-H10GB-CU5M

Cáp DAC Cisco SFP-H10GB-CU5M là một sản phẩm kết nối trực tiếp (Direct Attach Cable - DAC) của Cisco, được thiết kế với chiều dài 5 mét để cung cấp giải pháp linh hoạt cho việc kết nối trực tiếp giữa các thiết bị mạng như switch, router, hoặc server.

Sử dụng giao diện Small Form-factor Pluggable (SFP), cáp này có khả năng kết nối trực tiếp với các cổng SFP hoặc SFP+ trên các thiết bị mạng Cisco hoặc các thiết bị từ các nhà sản xuất khác mà hỗ trợ giao diện tương thích.

Đặc điểm chất lượng của sản phẩm này bao gồm tốc độ truyền dữ liệu cao, độ ổn định và độ tin cậy trong mạng.

Tóm lại, cáp DAC Cisco SFP-H10GB-CU5M với chiều dài 5 mét là một lựa chọn phổ biến trong các mạng doanh nghiệp và trung tâm dữ liệu, cung cấp kết nối trực tiếp đáng tin cậy và hiệu suất cao giữa các thiết bị mạng.

[hound-dog-development]

StarTech.com Cisco SFP-H10GB-CU5M Compatible SFP+ Direct-Attach Twinax Cable - 5 m (16.4 ft) - 10 Gbps - Passive DAC Copper Cable - RJ45

StarTech.com Cisco SFP-H10GB-CU5M Compatible SFP+ Direct-Attach Twinax Cable – 5 m (16.4 ft) – 10 Gbps – Passive DAC Copper Cable – RJ45

[holyfriendfreakmonger]

If you are looking for a good product SFP+ DAC then please visit our Gbic-shop.de. Gbic-shop.de direct attach ables offer a cost-powerful solution for excessive speed connections. They include 5-yr warranty and lifelong support. Book your product SFP+ DAC at: https://www.gbic-shop.de/SFP-Plus-Direct-Attach-Kabel

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[fibermarts]

Know About the Direct Attach Copper (DAC) Cable

Know About the Direct Attach Copper (DAC) Cable

The Active Optical Connection (AOC) cabling system employs optical fiber “between the connectors,” yet it accepts the same electrical inputs as a conventional copper cable. AOC cable employs electrical-to-optical conversion at the cable ends to boost the cable’s speed and range performance without compromising its ability to work with common electrical connectors. Twinax cable assemblies or…

[welcomecboit]

Transceiver used in networking

In general, a transceiver is both a transmitter and a receiver and is usually integrated into one device. Networking usually makes use of this kind of device as a modular interface. Fiber connections are available for this switch, and they could be single-mode or multi-mode, depending on your needs.

  Transceivers with two fiber interfaces make up a traditional transceiver, which provides duplex communication. A transmission fiber might be present on one of these connectors, while the receiving fiber would be present on the other.

Read the full article here:

 https://www.cbo-it.de/shop/Transceivers

[gbicshop]

Optical Networks offer a wide assortment of elements and opportunities for a steady and fast organization. One of those elements is the Dense Wavelength Division Multiplexing or DWDM innovation. This innovation changes over information that comes from various sources together on a similar optical fiber, but each optical sign is carried on its optical frequency. Utilizing this innovation, today, up to 32 optical frequencies can be driven on only optical fiber.

GBIC-SHOP Blueoptics© offers a scope of Optical Transceivers that can uphold DWDM innovation. DWDM SFP handsets are utilized for a transfer speed up to 3GB/s, DWDM XFP handsets are utilized for data transmission up to 11.3 GB/s, DWDM SFP+ handsets are utilized for data transmission up to 10.3 GB/s.

[suntelecomcn]

Data Center Cabling Solution: Active Optical Cable

As data rates rise and data center grows in size, copper cable is getting stretched to its limits. However,  active optical cable (AOC) has emerged to replace copper cable in data centers and high-performance computing (HPC) applications. It provides high-speed, high reliability, high flexibility, and low power consumption. This article will provide some knowledge of AOC cable. 

What is an Active Optical Cable?

Active optical cable (AOC) is an optical fiber jumper cable terminated with optical transceivers on both ends. It uses electrical-to-optical conversion on the cable ends to improve the speed and distance performance of the cable without sacrificing compatibility with standard electrical interfaces.

Active Optical Cable Structure

AOC cable consists of the fiber optic connector and fiber cable. The connection between fiber cable and fiber optic connectors is not separable. If the fiber optic connector or fiber cable needs to be changed, they should be removed together. The electrical and optical signal conversion can be achieved right through each end of the optical fiber.

Active Optical Cable Types

There are several varieties of AOC cable available on the market , including 10G SFP+ AOC, 25G SFP28 AOC,40G QSFP+ AOC, 56G QSFP+ AOC, 40G QSFP+ to 4x SFP+ breakout AOC, 40G QSFP+ to 8x LC breakout AOC, 100G QSFP28 AOC, 100G QSFP28 to 4x SFP28 breakout AOC and 120G CXP AOC, etc. These AOC cables are commonly used for short-range multi-lane data communication and interconnect applications between two devices, such as rack-to-rack, shelf-to-shelf interconnect, storage, hubs, switches, routers, servers, etc.

Features and Benefits

AOC cable provides low power consumption, high density, high speed, high reliability, high security, small size, strong heat dissipation, low electromagnetic interference, long transmission distance, low energy consumption, low latency, lightweight, and ease of installation.

Application Scenarios

AOC Cable is used to connect top-of-row (ToR) switches to end-of-row aggregation switches, and to connect the ToR switch with storage subsystems at reaches greater than direct attach copper (DAC) limits of 3-7 meters. The following three scenarios show the specific applications.

Scenario 1:  AOC cable is used to connect two switches directly.

Scenario 2: The breakout AOC cable provides a highly cost-effective way to connect within racks and across adjacent racks. The following figure shows 40GbE QSFP+ to 4 x SFP+ AOC cable connecting to a 40G QSFP+ port switch on one end, and to four 10G SFP+ port switches on the other end.

Scenario 3: For the long-haul transmission between the two switches, a suitable solution is recommended to use single-mode patch cable, OEO converters, and AOC cables, which can provide seamless integration of different fiber types by converting multi-mode fiber to single-mode fiber.

Conclusion

AOC cable achieves high data rates over long reaches interconnection, which is the best solution for data centers and high-performance computing applications. Sun Telecom specializes in providing one-stop total fiber optic solutions for all fiber optic application industries worldwide. Contact us if any needs.

[galinapetrova3508-blog]

Получить более глубокое понимание 10GBASE-T Модуля SFP+ с Интерфейсом RJ45

Получить более глубокое понимание 10GBASE-T Модуля SFP+ с Интерфейсом RJ45

 10GBASE-T является стандартной технологией, которая поддерживает операции при 10 Gigabit Ethernet по медной симметричной витой паре, в том числе неэкранированный и экранированный кабель Категории 6a. По сравнению с 10G оптической передачей 10GBASE-T использует медные кабели, которые обеспечивают большую экономию и гибкость для развертывания сети. И 10GBASE-T модуль SFP+ с интерфейсом RJ-45, который известен своей надежностью и хорошей производительностью, предоставляет менеджерам центров обработки данных новый вариант для своих 10G сетей. Эта статья будет показать подробное описание о 10GBASE-T модулях SFP+ с интерфейсом RJ-45.

 Обзор 10GBASE-T Модуля SFP+ с Интерфейсом RJ45

10GBASE-T модуль SFP+ с интерфейсом RJ-45 является высокопроизводительной интегри��ованной дуплексной линией передачи данных для двунаправленной коммуникации по медному кабелю. Она специально предназначена для высокоскоростных коммуникационных связей, которые требуют 10 Gigabit Ethernet по кабелю Cat 6a и Cat 7. Это первый модуль SFP+, который предлагает коммуникацию со скоростью 10Gb/s по медным кабелям. Кроме того, этот модуль с иетерфейсом RJ45 поддерживает передачу данных на расстояние до 30 m с помощью кабеля Cat 6a/7 и соответствует с SFF-8431 и SFF-8432 МСА.

И самое важное — 10GBASE-T модуль трансивера SFP+ может сэкономить по крайней мере 0.5W по каждому порту по сравнению с встроенным портом RJ45 10GBASE-T для передачи на расстояние до 30 m, что обеспечивает лучшую производительность в соединениях port-by-port и rack-by-rack. Его интерфейс RJ-45 поддерживает подключение к экранированным и неэкранированным кабелям. И этот модуль достаточно механически прочен и может предотвратить потери соединения, когда кабель помещается или перемещается по разным углам. С помощью интерфейса RJ-45 сетевые операторы могут продлить срок службы оборудования коммутаторов без изменения существующей инфраструктуры. И они также могут легко обновлять сеть до 10G.

 SFP+ DAC Vs. 10GBASE-T Модуль SFP+ с Интерфейсом RJ45 Vs. Оптический Модуль SFP+

Как упоминалось выше, SFP+ DAC, оптический модуль SFP+ и 10GBASE-T модуль SFP+ с интерфейсом RJ45 являются тремя компонентами, используемыми для соединений 10G. Вот простая таблица, показывающая основную информацию о них.

Примечания: Все они совместимы с Cisco. SFP+ DAC представляет собой ONS-SC+-10G-CU7 и SFP+ оптический модуль — SFP-10G-SR.

 Из диаграммы видно, что оптический модуль SFP+ поддерживает передачу данных на расстояние более 100m и SFP+ DAC до 7m. Когда этот модуль используется по медным кабелям, расход мощности выше, чем у биаксиальных DAC кабелей SFP+ и оптических модулей SFP+. И его цена составляет 388 долларов, которая также выше, чем у других двух компонентов. Но некоторые люди могут спросить: зачем нужен 10GBASE-T модуль SFP+ с интерфейсом RJ45 если SFP+ DAC и оптические модули SFP+ доступные и дешевые?

 Во-первых, в центрах обработки данных, как корпоративной системе, длина большинства соединений составляет от 10 метров до 100 метров. 10GBASE-T copper модуль SFP+, который обеспечивает передачу данных со скоростью 10Gb/s на расстояние до 30 метров, превышает ограничение SFP+ DAC.

 Во-вторых, с общим разъемом RJ-45 10GBASE-T copper модуль SFP+ имеет преимущества по сравнению с SFP+ решениями, потому что инфраструктура на основе меди гораздо дешевле, чем оптические оборудования.

 В-третьих, 10GBASE-T модуль SFP+ с интерфейсом RJ45 удобен для операторов в развертывании их сетевых систем. При подключении модулей 10G к медным сетям 10GBASE-T модуль SFP+ с интерфейсом RJ45 может непосредственно добавляться к медным сетям, а 10G модуль SFP+ должен подключаться к коммутатору Ethernet или медиаконвертеру, чтобы реализовать соединение.

Применение 10GBASE-T Модуля SFP+ с Интерфейсом RJ45

10GBASE-T модуль SFP+ с интерфейсом RJ45 может предложить гибкость для передачи данных со скоростью 10Gbps по медным кабелям, обеспечивая передачи данных 10G в оборудование с интерфейсами RJ45. Следующие фигуры показывают два примера.

 Первый Пример—Подключение к Серверу и/или Устройствам Хранения

Второй Пример—Обновление Сети до 10G в Коммутаторах Edge

Вывод

С помощью существующего порта SFP+ для передачи данных по медным проводам 10GBASE-T модуль SFP+ с интерфейсом RJ45 предоставляет лучшую гибкость для низкоплотных медных применений 10G, чем 10G коммутатор с фиксированным портом. 

[hound-dog-development]

StarTech.com Cisco SFP-H10GB-CU2M Compatible SFP+ Direct-Attach Twinax Cable - 2 m (6.6 ft) - 10 Gbps - Passive DAC Copper Cable - RJ45

StarTech.com Cisco SFP-H10GB-CU2M Compatible SFP+ Direct-Attach Twinax Cable – 2 m (6.6 ft) – 10 Gbps – Passive DAC Copper Cable – RJ45

[yourmellyguostuff-blog]

Fiber NIC Card: Definition, Types and Applications

Network interface cards, which are also called fiber NIC cards. Fiber NIC cards can provide fast and reliable network connections for users computers or network servers. And there are several common types of network interface cards in the market, such as fiber NIC card and wireless network card. This article will shed light on fiber NIC cards and their different applications.

What Is Fiber NIC Card?

Fiber NIC card is also called fiber LAN card or fiber server adapter. It is like a circuit board which is designed to allow computers or servers to communicate with a network. The fiber network card has a unique physical network address, also referred to as a MAC address. Fiber NIC card is usually a separate adapter card that can be inserted into one of the server’s motherboard expansion slots. The side plate of the fiber NIC is usually built with an interface like SFP, SFP+ or QSFP+ port. The card can translate computer data into electrical signals and the signals are compatible with the network., which is easy to exchange information. In the next part, some common types of fiber optic NIC cards will be elaborated in detail.

Common Fiber NIC Card Types Overview

Gigabit fiber network card, 10G fiber network card, 25G fiber NIC card and 40G fiber NIC card are common types of fiber NIC cards. Some basic information about them will be elaborated in the following part.

Gigabit Fiber Network Card

The gigabit Ethernet fiber network card, which is also known as the 1000Mbps optical network card. Usually, its maximum transmission speed can reach 1000Mbps and only provide a fixed transmission speed. According to different bus interfaces, gigabit fiber network card can be divided into PCI gigabit network card, PCI-X gigabit network card and PCI express gigabit network card. Based on different network interfaces, it can be grouped into RJ-45 gigabit fiber network card and SFP gigabit fiber NIC card.

10G Fiber Network Card

10G fiber network card uses a 32/64-bit PCI bus network interface card to establish a connection between the PC and the switch to solve the bottleneck problem of the server network card in the intranet mode. SFP+ single mode or multimode fibers and DAC/AOC cable can be used in 10G fiber network cards. The integrated communication control chip of 10G fiber network card relieves the pressure of CPU data processing. And 10G fiber NIC cards, especially 10Gbase-t NIC card, are frequently used in computers due to its relatively low transmission speed.

25G Fiber NIC Card

25G fiber NIC card typically operates at the physical or data link layer and has a unique physical address (MAC address). In addition, the 25G fiber NIC card has one or two SFP28 ports on the side panel, which is mainly used to connect the optical module to the switch. Common SFP28 optical module or the SFP28 high-speed cable (DAC) can be used in 25G fiber NIC card. The 25G fiber NIC card is mainly used for the connection between the servers and the switches.

40G Fiber NIC Card

40G fiber NIC card has a 40G QSFP+ interface that supports 40Gbps transmission bandwidth. It supports the PCI-e x8 standard slot to ensure efficient and stable operation. Usually, the 40G fiber NIC card also has single port and dual ports. And 40G fiber NIC cards in some companies have different functions. For example, 40 Gigabit Ethernet adapters in Intel can provide traffic separation (VMS) for virtual machines, state offload and use server and network virtualization. While 40 Gigabit Ethernet adapters in Mellanox are the highest performing interconnect solution for enterprise data centers, cloud computing, high-performance computing, and embedded environments.

Application of Fiber NIC Cards

Fiber NIC cards have two major applications. They can be applied to the connection between network servers, computers or storage and switches to realize 10G, 25G, 40G or up to 100G data transmissions. Here gives a specific application scenario of 10G fiber NIC cards. Just show as the below picture. The 10GBASE-T network card connects the ToR switch or EoR usage models via Cat6a/Cat7 UTP cables.

Conclusion

From what has mentioned above, you may likely to have a general idea about different fiber NIC cards. When you decide to choose different fiber NIC cards, it is very important for you to find the suitable ones based on your own needs. FS provides products such as 10G, 25G, 40G fiber NIC cards at competitive prices. If you need any help, feel free to contact us at sales@fs.com.