What is LR4 in QSFP?
What is LR4 in QSFP?
The QSFP+ transceiver is the dominant transceiver form factor used for 40GbE (Gigabit Ethernet) applications. The basic versions of QSFP are SR4 and LR4 that are respectively designed for MMF and SMF 40GbE applications. SR is short for short reach and LR represents Long Reach. 4 means 4 Tx and Rx.
What is 40G bidi?
40G BiDi transceiver, known as QSFP+ bidirectional transceiver, operates over two different wavelengths to transmit and receive in both directions over one strand MMF by adopting WDM (wavelength division multiplexing) technology.
What is QSFP used for?
SFP, SFP+ or QSFP are all types of transceivers used to connect a switch or other network device to copper or fibre cable. They are most commonly used to add fibre ports.
Is QSFP backwards compatible?
Systems designed with QSFP-DD modules are backwards compatible, allowing them to support existing QSFP modules and provide flexibility for end users and system designers. Backwards compatibility is critically important to the industry.
What is the difference between SFP SFP+ and QSFP+?
SFP+ vs QSFP+ The primary difference between QSFP and SFP is the quad form. QSFP+ is an evolution of QSFP to support four 10 Gbit/s channels carrying 10-Gigabit Ethernet, 10G Fiber Channel, or InfiniBand, which allows for 4X10G cables and stackable networking designs that achieve better throughput.
What is Cisco qsfp-40g-lr4 compatible?
The Cisco QSFP-40G-LR4 Compatible QSFP+ Optical Transceiver Module is designed for use in 40GBASE Ethernet throughput up to 10km over single mode fiber (SMF) using a wavelength of 1310nm via duplex LC connectors. This transceiver is compliant with QSFP+ MSA and IEEE 802.3ba 40GBASE-LR4 and OTU3 C4S1-2D1 standard.
What is the difference between QSFP and 40GBASE-CR4 cables?
Cisco QSFP to QSFP copper direct-attach 40GBASE-CR4 cables (Figure 5) are suitable for very short distances and offer a flexible way to connect within racks and across adjacent racks. Active optical cables are much thinner and lighter than copper cables, which makes cabling easier.
What are the dimensions of a 40gbase QSFP connector module?
Cisco 40GBASE QSFP Modules Data Sheet. Maximum outer dimensions for the QSFP connector module are (H x W x D) 13.5 x 18.4 x 72.4 mm. Cisco QSFP connector module typically weigh 100 grams or less.
Does the qsfp-40g-sr4-s support 4x10g breakout connectivity?
Because the QSFP-40G-SR4-S does not support 4x10G breakout connectivity, see QSFP-40G-SR4 or QSFP-40G-CSR4 for such applications. QSFP-40G-SR4-S does not support FCoE. The Cisco 40GBASE-SR4 QSFP Modules support link lengths of 100 meters and 150 meters, respectively, on laser-optimized OM3, and OM4/OM5 multimode fibers.
