Juniper Series
Juniper QFX-QSFP-40G-SR4 740-032986
- Product description: Juniper QFX-QSFP-40G-SR4 740-032986_40GBase-SR4 QSFP+ Transceiver (MMF, 850nm, 150m, MPO, DOM)_liyuan tech
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Manufacturer: Juniper
Part number: QFX-QSFP-40G-SR4 740-032986
Form Type: QSFP+
Speed Description: 40-Gigabit
Reach: 150m
Wavelength: 850nm
Transceiver Type: SR4
Media: MMF
Connector: MPO
DOM: DOM
DDM:DDM
Product Description
1. Product Type: This is a QSFP+ (Quad Small Form-factor Pluggable Plus) form factor 40Gbase-SR4 optical module.
2. Core Parameters:
Rate: 40 Gigabit Ethernet (40GbE)
Standard: Compliant with IEEE 802.3ba 40GBASE-SR4 standard.
Interface: QSFP+, hot-swappable.
Connector Type: MPO/MTP multi-fiber connector (typically a 12-fiber or 8-fiber MPO female connector). This is a key feature of the SR4 standard.
Transmission Distance:
Up to 100 meters over OM3 multimode fiber.
Up to 150 meters over OM4 multimode fiber.
Wavelength: Uses 4 parallel fibers, each transmitting 10Gbps, with a central wavelength of 850nm.
Digital Diagnostic Monitoring (DDM/DOM): Supported. Real-time parameters of the optical module can be monitored through the Junos command-line interface, such as:
Output/input optical power, supply voltage, operating temperature, laser bias current. This is crucial for network operation and maintenance as well as troubleshooting.
3. Physical Appearance and Compatibility:
The "740-032986" in the model number is a specific part number from Juniper, ensuring full compatibility and reliability with Juniper devices.
It is designed specifically for Juniper's QFX series switches (such as QFX10000, QFX5000, QFX3000 series), MX series routers, and other devices supporting 40G QSFP+ ports.
Although the physical specifications are industry standards, it is strongly recommended to use Juniper-certified optical modules on Juniper devices to avoid compatibility issues and ensure technical support. Usage scenarios
This 40G-SR4 optical module is mainly used for short-distance, high-bandwidth internal connections in data centers. The following are its typical application scenarios:
1. Interconnection in the spine-leaf architecture of data centers: This is the most core application scenario. In modern data centers:
Leaf switches and Spine switches require extremely high bandwidth and low latency.
Using this optical module, a 40G interconnection can be achieved through a single MPO fiber optic patch cord (containing 12 fibers), building a high-speed, non-blocking network backbone.
2. High-speed interconnection between switches (Switch-to-Switch Links): Connecting two 40G port-supported switches (such as Juniper QFX series) within the same room or adjacent cabinets, for stacking or high-speed link aggregation.
3. Connecting high-performance servers or storage devices: For some servers that require extremely high network bandwidth,
(such as high-performance computing servers or large database servers equipped with 40G network cards) or storage arrays (such as SAN storage), this module can be used to directly connect the server to the 40G port of the network switch.
4. QSFP+ to 4xSFP+ breakout application: This is a very important and common usage. Many Juniper switches (such as QFX5100) support the "breakout" function on their 40G ports.
You can insert this optical module into one QSFP+ port (40G) of the switch.
Then use a special breakout MPO-to-LC fiber optic patch cord (or branch fiber), connecting the MPO end to this optical module,
and the other end's four duplex LC connectors can be respectively connected to the 10G SFP+ ports of four different devices.
Effect: Logically split one physical 40G port into four independent 10G ports (for example: et-0/0/0:0, et-0/0/0:1, et-0/0/0:2, et-0/0/0:3).
Scenario: Very economical and efficient, one 40G port can be used to connect four 10G servers, improving port utilization and management flexibility.
In addition to Juniper QFX-QSFP-40G-SR4 740-032986 , Liyuan Tech supply a wide range of other Juniper Series transceivers. If you have any need or interest, please feel free to send inquiry to global@chn-liyuan.com
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