Share this content on Facebook!
06 May 2016

Quad small form-factor pluggable plus (QSFP+) direct attach copper (DAC) cables are suitable for in-rack connections between QSFP+ ports of EX Series switches. They are suitable for short distances of up to 16.4 ft (5 m), making them ideal for highly cost-effective networking connectivity within a rack and between adjacent racks. This article will introduce EX Series switches and QSFP+ DAC for EX Series switches.

Introduction to EX Series Switches

EX Series switches deliver scalable port densities and carrier-proven high availability features that consolidate legacy switch layers, helping to reduce capital and operational expenses and advance the economics of networking. For example, the EX 4200 series Ethernet switches with...



14 Mar 2016

40 Gigabit Ethernet era is already upon us and makes a contribution to satisfying the increasing demands of higher throughputs and bandwidth. The 40-Gbps Ethernet transfers data at a rate of 40 gigabits per second over Ethernet. The biggest market for 40G Ethernet (40GbE) is in data center for interconnection links with servers and storage area networks. How to deploy 40G Ethernet? This article will introduce some information related to 40G cabling and transceivers options.

Cables for 40 Gigabit Ethernet

40G cables can provide inexpensive and reliable 40G speed connections using either copper cables with distances reaching up to 30ft (~10 meters length) or active optical cables reaching even 300ft(100 meters). Cables can be divided...



01 Mar 2016

With the development of the SFF-8436 Multi Source Agreement, many vendor are now offering a variety of IEEE- and MSA-compliant Quad Small Form-Factor Pluggable Plus (QSFP+) devices for fiber networks. And there are basic three 40G QSFP+ optics for this standard: 40G LR4 QSFP+ transceiver, 40G SR4 QSFP+ transceiver and 40G LR4 parallel single mode (PSM) transceiver. This article will take a close look at these 40G QSFP+ optics for high-density 40 GE connectivity.

40G LR4 QSFP+ Transceiver

Conforming to the 802.3ba (40GBASE-LR4) standard, the 40G LR4 QSFP+ transceiver together with the LC connector can support an optical link length up to 10 kilometers over single mode fiber. For example, the following Juniper JNP-QSFP-40G-LR4...