IP cameras are the cornerstone of modern video networks and are commonly used for surveillance purposes. To capture and store the visual data, network video recorder (NVR) systems are utilized, as they offer advanced protocols and functionality. Industry experts recommend using NVR to support video networks integrated with IP cameras.

NVR can be configured with Ethernet or wireless communication protocols, although Ethernet is preferred due to its numerous benefits over Wi-Fi. Power over Ethernet (PoE) technology is often utilized with NVR for connectivity with IP cameras. However, a proper understanding of NVR, PoE switches, and how to interconnect the two is necessary for proper implementation.

PoE switch

This post discusses differences between PoE NVR and PoE switches as well as the methods to connect them.

About PoE NVR

A PoE NVR is a network video recorder that is combined with Power over Ethernet transmission protocols. It offers centralized control for managing and storing videos or images. PoE switches are often used with NVR technology to form a managed PoE NVR network, allowing the transmission of data and power over Ethernet cables. Multiple switches are integrated to distribute data to powered devices and send video data to a specific IP address within the PoE NVR.

About PoE switches

A PoE switch is a type of network switch that has the capability to provide power over Ethernet to PoE-enabled devices such as wireless access points, network cameras, and VoIP phones. This type of switch allows for data communication and power supply using the same RJ45 network cable. Its primary function is to enable devices to function in areas where there is no power outlet or network connection. By doing so, businesses can save money on installation costs for electrical and network wiring. PoE switches come in various models and can be used in different scenarios depending on the specific needs of the network.

Difference between a PoE NVR and PoE switch

The main distinction between PoE NVR and PoE switches is that NVR is a sophisticated video signal processing technology, while PoE switches act as intermediate devices. Using PoE switches alone only permits managed networking and data transmission over Ethernet for video transmission. However, PoE NVR allows remote IP addresses and controlled video data transmission, processing, and storage, resulting in an improved quality of the video transmission network. By integrating PoE and NVR technologies together, they result in a highly effective video transmission network.

How should you connect a PoE switch directly to PoE NVR?

 Method 1:


  • Connect the PoE NVR and PoE switch to the same router via Ethernet cable.
  • Plug the PoE cameras into either the PoE switch or PoE NVR.

Cameras plugged into the PoE switch will obtain an IP address from the router and can be added to the PoE NVR via LAN. Cameras plugged directly into the PoE NVR will obtain an IP address from the NVR. It is important to note that in this method, cameras plugged into the PoE switch (excluding the kit camera of the NVR system) can be connected as separate devices through Client/App, while cameras plugged directly into the NVR cannot be connected as separate devices.

Method 2:

  • Connect the PoE switch to the PoE NVR
  • Plug the NVR LAN port to the router.

In this method, the PoE switch can support a maximum of three cameras due to the bandwidth limitations of the NVR Ethernet port (the NVR LAN port is a Gigabit Ethernet port, while the other ports are 100Mbps Ethernet ports). All cameras will obtain an IP address from the NVR and cannot be connected as separate devices.

Method 3:

  • Plug the PoE switch into the router
  • Plug the NVR LAN port into the PoE switch.

This method is similar to Method 1, where cameras plugged into the PoE switch will obtain an IP address from the router, and cameras plugged directly into the PoE NVR will obtain an IP address from the NVR.

What important things should you consider when connecting a PoE switch to PoE NVR?

Power budget: The PoE switch's power budget should exceed the total power consumption of all connected devices, including the PoE NVR. This will keep the switch from becoming overloaded and will ensure that all devices receive adequate power.

Bandwidth: The PoE switch and PoE NVR must have enough bandwidth to handle the data transmitted by the connected devices. This is especially true for high-resolution cameras, which require more bandwidth.

Ethernet cable: Use high-quality Ethernet cables capable of carrying PoE power. This ensures that the devices receive enough power and prevents signal loss.

Network topology - Consider the network topology as well as the number of devices that must be connected. To ensure proper network management and distribution, larger networks may require the use of multiple PoE switches or additional routers.

Compatibility- Check that the PoE switch and PoE NVR are compatible and can communicate with one another. This includes ensuring that they are compliant with the same PoE standard (e.g., IEEE 802.3af or IEEE 802.3at) and have the same protocol settings.

By now, you might have understood that you can connect PoE switch directly to NVR.  For any other query regarding the same, please get in touch with us via WhatsApp at +971585811786.