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Description
Arista Compatible QSFP-40G-PLRL4 - Functionally Identical 40GBASE-PLR4L QSFP+ 4x10G 1310nm 2km DOM SMF MPO/MTPThe Arista Compatible QSFP 40G PLRL4 from ENET Solutions is a high performance, OEM compatible optics module designed to deliver reliable 40GBASE PLR4L connectivity in data centers using Arista networks. This 4x10G QSFP+ transceiver is engineered to be functionally identical to Aristas own QSFP 40G PLRL4L, ensuring seamless interoperability with Arista switches and a broad range of PLR4L capable devices. Built for long haul links over single mode
The Arista Compatible QSFP-40G-PLRL4 from ENET Solutions is a high-performance, OEM-compatible optics module designed to deliver reliable 40GBASE-PLR4L connectivity in data centers using Arista networks. This 4x10G QSFP+ transceiver is engineered to be functionally identical to Arista’s own QSFP-40G-PLRL4L, ensuring seamless interoperability with Arista switches and a broad range of PLR4L-capable devices. Built for long-haul links over single-mode fiber, it combines 1310 nm transmission, robust reach, and intelligent diagnostics to help network engineers scale capacity, simplify deployments, and reduce total cost of ownership. Whether you’re refreshing an aging fabric, expanding a high-density spine-leaf topology, or deploying a new multi-site link, this module provides a dependable, plug-and-play solution that aligns with industry standards and vendor expectations. ENET Solutions emphasizes compatibility, supply chain flexibility, and comprehensive support—delivering a product that pairs strong performance with the assurance of a trusted distributor for network peripherals and optics.
- 4x10G QSFP+ performance with 1310 nm SMF optics: This transceiver consolidates four independent 10G channels into a single QSFP+ package, delivering a total bandwidth of up to 40 Gbps while maintaining excellent reach and optical performance over single-mode fiber (SMF). The 1310 nm wavelength is optimized for low attenuation and high signal integrity across typical data-center links, enabling stable long-haul links up to the specified range in PLR4L configurations.
- 2 km reach on SMF with MPO/MTP interface: Engineered for short-to-mid reach deployments, the PLRL4L module supports distances up to approximately 2 kilometers on standard SMF when paired with an appropriate MPO/MTP fiber assembly. This makes it well-suited for campus interconnects, data-center interconnects, and aggregation layers where distance and fiber stability are critical considerations.
- Digital Diagnostics Monitoring (DOM) and onboard visibility: The module includes Digital Diagnostics Monitoring to provide real-time insight into critical operating parameters such as optical transmit and receive power, temperature, and supply voltage. DOM supports proactive health checks, easier fault isolation, and easier capacity planning, helping administrators optimize performance and uptime across the network.
- OEM-compatible, Arista-ecosystem ready: While built as a cost-effective alternative to Arista-branded PLR4L modules, this QSFP+ transceiver is designed for seamless integration with Arista switches and other PLR4L-compatible platforms. It offers the same electrical and optical characteristics expected by network engineers, ensuring compatibility, reduced latency in procurement, and a straightforward replacement process without requiring firmware or configuration changes.
- Durable construction, certification-ready for data centers: The module adheres to rigorous industry standards and is tested to meet the demanding reliability requirements of modern data-center operations. Its robust mechanical and optical design supports hot-swapping in supported environments, minimizes downtime during swaps, and aligns with enterprise-grade service expectations. ENET Solutions backs this product with compatibility guarantees and post-purchase support to ease deployment and ongoing operations.
Technical Details of Arista Compatible QSFP-40G-PLRL4
- Data Rate: 40 Gbps total (4x10G lanes)
- Application: 40GBASE-PLR4L (PLR4L) over SMF
- Wavelength: 1310 nm
- Fiber Type: Single-Mode Fiber (SMF)
- Reach: Up to approximately 2 kilometers
- Connector: MPO/MTP interface
- Form Factor: QSFP+ package
- Diagnostics: Digital Diagnostics Monitoring (DOM) supported
- Compatibility: Functionally identical to Arista QSFP-40G-PLRL4L; OEM-compatible with Arista platforms and PLR4L-enabled networks
- Manufacturer: ENET Solutions (OEM-compatible optics and network peripherals)
how to install Arista Compatible QSFP-40G-PLRL4
To install this QSFP+ module, power down the target device only if your environment requires a non-hot-swappable insertion, otherwise follow your vendor’s hot-swap procedures. Remove the existing module from the QSFP+ slot with care, ensuring you discharge static electricity and avoid touching optical surfaces. Align the Arista Compatible QSFP-40G-PLRL4 with the slot and firmly seat the module until it clicks into place. After installation, re-seat any retention mechanisms and reassemble the chassis or panel as needed. Power up the device and verify that link LEDs indicate a successful connection for all four 10G channels. Use your management software to confirm the 40G link status and validate data throughput across the fabric. If Digital Diagnostics Monitoring is supported on the host, review DOM readings to ensure TX/RX power, temperature, and voltage are within expected ranges. Finally, confirm end-to-end connectivity by running a baseline throughput and BER test, and document the results for future reference. Maintain proper fiber handling practices: use correct SMF specifications, ensure the MPO/MTP connector alignment, and avoid bending or stressing the fiber cable to preserve signal integrity over the 2 km reach.
Frequently asked questions
- Q: Is the Arista Compatible QSFP-40G-PLRL4 truly compatible with Arista switches? A: Yes. It is designed to be functionally identical to the Arista QSFP-40G-PLRL4L and is intended for seamless interoperability with Arista platforms that support PLR4L modules. It provides the same electrical interfaces and optical performance expectations, allowing straightforward deployment in compatible environments.
- Q: What is the maximum reach and fiber type for this transceiver? A: The module supports up to about 2 kilometers over single-mode fiber (SMF). It uses a 1310 nm wavelength optimized for SMF, delivering stable, long-haul PLR4L performance in data-center and campus networks.
- Q: Does this transceiver support DOM? A: Yes. Digital Diagnostics Monitoring is available to provide real-time visibility into critical operating parameters, enabling proactive monitoring, quicker fault isolation, and improved maintenance planning.
- Q: What cable and connector are required? A: The module uses an MPO/MTP interface for the fiber connection and is designed to work with standard SMF fiber assemblies compatible with PLR4L applications. Proper MPO/MTP breakout or ribbon fiber configurations are recommended depending on your deployment.
- Q: Where can I source this module, and is it backed by warranty? A: ENET Solutions supplies OEM-compatible optics and network peripherals, including this QSFP-40G-PLRL4L-equivalent module. Warranty and support terms are provided by ENET Solutions, with engineering validation for Arista ecosystem compatibility.
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4.1 ★★★★★
Based on 2236 reviews
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Product Reviews
★★★★★ 5
A must have for the serious tracker!
Format: Kindle
8/23/19 Edit: Original review based only on Kindle version, but since receiving my paper copy, I've edited it throughout. Overall I am even more enthusiastic about it. I'm a bit of a dinosaur and rarely use Kindle and I found it harder to evaluate the book without paper pages to flip through.
This is THE authoritative source for N. American mammal tracks & sign. What makes it (including 1st edn) special:
1. It is organized by type of sign rather than by species (but see below in "What's new"). This is terrific for when you've found some type of sign and can't narrow it down to a few species. Found a scat? Go to the section on scat and learn the appearance of scat left by different species so you can ID yours.
2. It's comprehensive (covers many species) and exacting (detailed measurements, meticulously researched).
3. Photos are large and clear enough to show what they intend to convey.
4. It has illustrations to help you grasp the salient features of tracks, but also photos that help you see how tracks and trails differ in different substrates.
What's new in this 2nd edition:
1. There is a final chapter called "Species Accounts" and in each account, there are detailed illustrations of feet, and photos and illustrations of tracks and track patterns. The animal's other types of sign (runs, feeding sign, etc.) are summarized verbally. The photos of those other signs are all in the other relevant chapters, but references to figure numbers are given in the Species Accounts. These Species Accounts are a dramatic improvement over the 1st edn, in which they were part of the Tracks and Trails chapter, and did not usually mention other types of sign created by each animal. The Species Accounts in the 2nd edn make it much easier for the reader to get a coherent picture of each species, so this is a dramatic improvement. Essentially the book is still organized by sign, but the Species Accounts make it far easier to navigate.
2. I mentioned above the detailed illustrations of feet, but this deserves emphasis. These are great; it really helps to be able to correlate the foot anatomy to the the track.
3. It has many new photos, which are extremely clear and illustrate the points beautifully.
4. Range maps have been omitted. This is a negative, and I imagine it was done to save space.
5. The book is, overall, much more appealing to the eye, perhaps because it is better organized. I have to admit I thought the 1st edn was a bit awkward in its organization and I sometimes found it frustrating to flip through in search of something in particular....Not the case at all in the 2nd edn.
While the species accounts now include summaries of other types of sign, they still do not provide an image of the animal, physical description, diet, breeding behavior, habitat, etc. This is not a criticism (you can't everything about mammals in one book), it is just to say that this book remains the top reference for the intermediate to advanced tracker, but not the best place for a beginner to start. If you're a beginning tracker and you don't already have a solid knowledge of each animal's appearance, range, and basic ecology, I suggest you first read one of the following, both of which are truly organized by species.
1. Camera Trapping Guide: Tracks, Sign and Behavior of Eastern Wildlife, by Janet Pesaturo -- Less comprehensive track & sign but has photos of each animals, sometimes with the animals in the act of creating the sign. It has range maps and much info on each species' ecology and behavior but not so much that it's overwhelming or unreadable. Focused on eastern US but most species also found in west. Yes, it's technically a camera trapping guide, but it's really about using track & sign knowledge to find animal hot spots (for good camera placement), so it's hugely helpful for trackers. I prefer this over Rezendes's Tracking and the Art of Seeing, which also focuses mostly on the East but has no range maps and has less about ecology and behavior.
2. The Tracker's Field Guide, by James Lowery -- Also less comprehensive than Elbroch's and MacFarland's tome, but for a tracking book it has very nice coverage of pertinent animal ecology. Focused mainly on western US but still useful for eastern US. Has both illustrations and photos, though admittedly some of the photos are a bit small or less than perfectly clear. Still, I consider it the best for the west among species by species tracking guides.
If you're a serious tracker of any level, you'll find the 2nd edition of Mammal Tracks & Sign extremely useful. As you learn tracking, it won't be long before you find some kind of sign which you can't narrow down to a couple of species. In that case, a book organized by type of sign makes it quick and easy for you to narrow it down and probably determine exact species. And, there is simply no other tracking guide that's anywhere near as comprehensive as this one. The 1st edition has been one of the most useful books in my extensive natural history library, and I'm delighted to have this updated edition. A must-have for the serious tracker!
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Reviewed in the United States on July 26, 2019
★★★★★ 5
Tons of info!
Format: Paperback
If one wanted to be a real tracker, this book has everything needed. I just want to be able to recognize the local wildlife tracks. But having all the rest of the info is nice, and it's easy to take what I want. The book is well organized. Fantastic pictures, loads of information. It's interesting too, to see just how much knowledge goes into figuring out not only what animal it is, but what sex, age, gait, etc it is. This is an awesome book.
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Reviewed in the United States on January 18, 2025
★★★★★ 5
Caveats for the professional tracker
Format: Paperback, Format: Paperback
This is a most excellent resource, arguably the best single tracking book that exists (i would argue so, if i had to pick one! And i recommend this book often). However, if you are in a professional field where this legally matters (EIS or ESA decisions on wolverine/fisher/lynx, etc.), take heed: the authors’ methods of measuring tracks are confusing (i.e. - where is the line between substrate/mammal family to determine when claws or ‘posterior’ pads are or are not used in measuring tracks? ) Also, the claim that “an individual animal can show incredible variation in track size” (p.57) is very misleading… Foot size of an individual animal from birth to adult will obviously change, but will not change in a day for the same-aged individual animal regardless of whether it walks in mud or atop rock. The animal’s foot does not change in size, but its track might appear to. This perceived “change” could be easily avoided by using minimum outline measurements (which are not discussed in this book, but can be found in the work by J. Halfpenny and others). I understand their reasons, but please do not refer to this book for legally defensible measuring techniques of rare species!!!!
Also please disregard the negative reviewer who said “it’s a very Mythological Approach to how animals move and walk (jsopel),”- they clearly don’t know what that word means…
All in all a well-researched and fantastic book that comes from ample and legitimate experience. A great book and happy tracking!
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Reviewed in the United States on August 15, 2021
★★★★★ 5
A must have for wildlife lovers
Format: Paperback
Wow! What an excellent and thorough compilation of scat and tracks. Nice reference for when you take pics and bring the image back to the book for comparison. Also, great information about tracking.
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Reviewed in the United States on June 10, 2025
★★★★★ 4
Good but index needs improvement
Format: Paperback
This is a good, comprehensive guide to tracks and sign.
However, there is no index of where to find each family, so in order to find a species you have to flip through the entire book looking for the right page. This makes it annoying to use if you are trying to look up information on a particular species or family.
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Reviewed in the United States on April 2, 2026
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