With an increasing demands for higher performance and flexibility, to choose a right and cost-effective cabling solution for data center switch interconnection is very important. In this blog, we are going to talk about the cabling and optics requirements for Juniper QFX3500 switch.
The Juniper Networks QFX3500 device is a high-speed, multi-purpose switch especially designed for next-generation data centers. The QFX3500 can be configured as a standalone switch, a Node device in a QFabric system, or as a member of a Virtual Chassis. Here is mainly about the QFX3500 switch.
As the picture shown below, QFX3500 switch is designed with 48 access ports (0 through 47) that support small form-factor pluggable plus (SFP+) and small form-factor pluggable (SFP) transceivers, as well as SFP+ direct attach copper cables (DAC cables). In this case, it operate by default as 10GbE (Gigabit Ethernet) interfaces. Optionally, users can choose to configure up to 12 of the ports as 2Gbps, 4Gbps, or 8Gbps Fibre Channel (FC) interfaces, and up to 36 of the ports as 1GbE interfaces. In addition, QFX3500 has four uplink ports (Q0 through Q3) that support up to 4 QSFP+ transceivers, as well as QSFP+ DAC or DAC breakout cables ( e.g. QSFP+ to 4 x SFP+ breakout cables to support an additional fifteen 10GbE interfaces).
Nowadays, data centers are built with high-performance, small form-factor, multi-core blade and rack servers. The greater compute capacity and server densities enabled by these devices is increasing traffic levels, creating the need for a high speed, low latency, storage- and I/O-converged networking solution that can maximize performance for physical servers, virtual servers, and storage in the data center.
The QFX3500 switch is a high-performance, low-latency, feature-rich 10GbE Layer 2 and Layer 3 switch designed and optimized for virtualized data centers. Its compact form factor design supports the high-performance, converged data center access networks. Furthermore, the QFX3500’s low power consumption optimizes the switch’s power use effectiveness (PUE) ratio to reduce data center operating costs, while front-to-back air flow meets hot and cold aisle isolation requirements. According to the data sheet of Juniper Network, the QFX3500 can perform well for many applications, such as high-performance Layer 2 and Layer 3 access for enterprise, HPC (High Performance Computing), cloud and Web-tier data centers, high-performance data center bridging (DCB), storage and I/O convergence environments or L3 aggregation switch etc.
As described above, QFX3500 switch can support 1GbE, 10GbE and 40GbE interfaces. Here is mainly introduce the direct connection solution with transceiver modules and DACs between two QFX3500 in details. The more complicated interconnection solution may add the corresponding patch panels and cables. If you are interested in that, please feel free to contact us over firstname.lastname@example.org.
|Product Types||FS P/N||Description|
|40GbE QSFP+||QSFPP-40GBASE-LR4||40GBASE-LR4 QSFP+, 1310 nm for 10km transmission on SMF, Duplex LC|
|JNP-QSFP-4x10GE-IR||4X10G-IR PSM QSFP+, 1310 nm for 1.4km transmission on SMF, MPO|
|QSFP-ER4-40G||40GBASE-ER4 QSFP+, 1310 nm for 40km transmission on SMF, Duplex LC|
|QSFPP-40GBASE-SR4||40GBASE-SR4 QSFP+, 850nm for up to 150m transmission on MMF, MPO|
|1GbE SFP||SFP-1GE-T||1000BASE-T Copper SFP for up to 100m transmission on Cat5|
|SFP-1GE-SX||1000BASE-SX Gigabit Ethernet SFP, 850 nm for up to 550m transmission on MMF|
|SFP-1GE-LX||1000BASE-LX Gigabit Ethernet SFP, 1310 nm for 10km transmission on SMF|
|10GbE SFP+||SFPP-10GE-SR||10GBASE-SR 10 Gigabit Ethernet SFP+, 850 nm for up to 300m transmission on MMF|
|SFPP-10GE-LR||10GBASE-LR 10 Gigabit Ethernet SFP+, 1310 nm for 10km transmission on SMF|
|EX-SFP-10GE-ER||10GBASE-ER 10 Gigabit Ethernet SFP+, 1550 nm for 40km transmission on SMF|
|SFP+ DAC & AOC||10GSFP-PC-30-1||1m SFP+ 10 Gigabit Ethernet DAC|
|10GSFP-AC-30-1||1m SFP+ 10 Gigabit Ethernet Active DAC|
|10GSFP-AOC-1||1m SFP+ 10 Gigabit Ethernet AOC|
|QSFP+ DAC & AOC||QFX-QSFP-DAC-1M||1m QSFP+ 40 Gigabit Ethernet DAC|
|QFX-QSFP-DAC-5MA||5m QSFP+ 40 Gigabit Ethernet Active DAC|
|QSFP-40G-AOC||QSFP+ 40 Gigabit Ethernet AOC|
|QSFP-4SFP10G-DAC||QSFP+ to 4xSFP+ Breakout DAC|
|QSFP-4SFP10G-AOC||QSFP+ to 4xSFP+ Breakout AOC|
Transceivers and fiber-optic cables must be kept clean and dust free to maintain high signal accuracy and prevent damage to the connectors. Attenuation (loss of light) should be controlled within the standard. In addition, when doing the cabling, the following points should be considered.
Where Is Ethernet Cable of Various Lengths Deployed?
Will Copper Cables Still Be an Indispensable Part in Data Center?
Network Cable Standards for Generic Cabling: TIA 568 vs ISO 11801 vs EN 50173.
QSFP-40G-SR4 Cisco Compatible Module Testing