Endspan vs. Midspan — What's the Difference?
By Tayyaba Rehman & Urooj Arif — Updated on April 16, 2024
Endspan PoE provides power from the network switch, using all wires in an Ethernet cable; midspan PoE uses a separate injector, powering only data wires.
Difference Between Endspan and Midspan
Table of Contents
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Key Differences
Endspan Power over Ethernet (PoE) sources power directly from the network switch, integrating data and power transmission seamlessly. Whereas, midspan PoE involves an intermediary device, known as a PoE injector, which adds power to the Ethernet cable without replacing existing network switches.
Endspan solutions often simplify infrastructure by eliminating the need for additional hardware, as they incorporate PoE capability into the network switch itself. On the other hand, midspan solutions are adaptable, allowing for the retrofitting of PoE into existing network setups without the need to change switches.
Endspan setups typically support a wider range of PoE standards directly from the switch, which can simplify network management and compatibility. In contrast, midspan devices may be limited by the power outputs and standards they support, depending on the injector model used.
Endspan configurations are generally considered when new network installations are planned or during major upgrades. Conversely, midspan configurations are favored for their flexibility in expanding capabilities to existing networks with minimal disruption.
Comparison Chart
Power Source
Network switch
PoE injector
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Installation Type
Integrated in switch
Added between switch and device
Flexibility
Less flexible, new or upgraded networks
More flexible, enhances existing setups
Compatibility
High, supports various PoE standards
Variable, depends on injector specifications
Infrastructure Impact
Simplifies, reduces additional hardware need
Increases hardware, more components involved
Compare with Definitions
Endspan
Endspan PoE refers to switches with built-in Power over Ethernet capabilities.
Modern offices often use endspan PoE switches to streamline network cabling.
Midspan
Compatible with older network infrastructure.
Midspan PoE allows legacy equipment to benefit from PoE without full replacement.
Endspan
Ideal for new network installations.
Endspan PoE switches are preferred during major network overhauls for efficiency.
Midspan
Only powers the data-carrying wires in the cable.
Midspan PoE typically utilizes spare wires for power delivery in fast Ethernet.
Endspan
It typically powers all eight wires in an Ethernet cable.
Endspan PoE can carry both power and data over longer distances without signal loss.
Midspan
Requires additional space and planning for installation.
Network designs with midspan PoE need to accommodate extra hardware.
Endspan
Directly supported by network hardware manufacturers.
Leading network brands offer various models of endspan PoE switches.
Midspan
Midspan PoE involves a separate injector device that adds power to an Ethernet cable.
Midspan PoE injectors are used to upgrade existing networks without new switches.
Endspan
Simplifies network design and reduces components.
Using endspan PoE eliminates the need for separate power injectors.
Midspan
Varied support for PoE standards depending on the device.
Not all midspan PoE injectors support the latest PoE+ standards.
Endspan
The end of the structural element which is under shear loading.
Midspan
(engineering) In structural engineering, the point on a flexural member (typically a beam, girder, or spandrel panel) that is equidistant from the two end supports.
Common Curiosities
Can endspan PoE be used with any network switch?
Endspan PoE requires a switch with built-in PoE capabilities.
What does a midspan PoE injector do?
A midspan PoE injector adds power to an Ethernet cable independently of the network switch.
What are the main advantages of endspan PoE?
Endspan PoE simplifies infrastructure and is generally easier to manage within a network.
What is endspan PoE?
Endspan PoE refers to Power over Ethernet capabilities built directly into a network switch.
Is midspan PoE compatible with all Ethernet cables?
Yes, midspan PoE works with standard Ethernet cables but its efficiency may vary based on the cable quality and type.
What are the main advantages of midspan PoE?
Midspan PoE offers flexibility to add PoE to existing networks without replacing hardware.
Does midspan require additional space?
Yes, midspan requires additional space and planning for installation.
Are there any limitations to using endspan PoE?
Yes, endspan PoE can be less flexible and usually requires investment in new or PoE-capable switches.
Do both endspan and midspan PoE support the same power output?
Not necessarily; power outputs can vary based on the specific PoE standards supported by same power output.
How do I choose between endspan and midspan PoE?
The choice depends on whether you are upgrading an existing network or installing a new one.
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Written by
Tayyaba RehmanTayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
Co-written by
Urooj ArifUrooj is a skilled content writer at Ask Difference, known for her exceptional ability to simplify complex topics into engaging and informative content. With a passion for research and a flair for clear, concise writing, she consistently delivers articles that resonate with our diverse audience.
