Compare Products


Clear All


Time: August 4th, 2023

This post talks about the basic concepts of Ethernet Ring Protection Switching and its advantage in a network. If you were searching for this core tech, then this article is for you.

Ethernet Ring Protection Switching (ERPS) 

It is a Layer 2 and 3 solution that protects against frame loss. It uses MAC address filtering and priority queuing to prevent an Ethernet ring from being interrupted when it encounters a fault condition such as collisions or power loss. The difference between EPPP and ERP is that EPPP is designed for point-to-point links while ERPS can be used on any type of Ethernet link including multipoint, hybrid, or multimode links. The main benefit of using ERPS instead of EPPP is that it provides better performance compared with traditional bridge isolation techniques such as 802.1D Spanning Tree Protocol (STP).

How does ERPS work?

It provides more than 10,000 VDC of protection between devices in a ring topology with up to 64 ports. The device can be used in a mission-critical application that requires high-current protection, as well as in applications where there are high power requirements and low voltage drops over long distances. The ERPS is ideal for use in industrial control systems (ICS), machine automation, and instrumentation markets such as oil & gas extraction or manufacturing applications where reliability is paramount. ERPS provides:

  • Data protection by preventing network crashes due to cable breakage or physical damage;
  • Data integrity through preventative features like CRC checksums on every packet sent over the network;
  • Data confidentiality through encryption of transmitted messages with 128-bit AES encryption algorithm;
  • Management via web browser graphical user interface enabling users to manage their networks from anywhere on any device connected to an Ethernet Ring Topology.

The Ethernet ring topology is used for applications in which multiple devices share a network connection. For example, it might be used to connect multiple endpoints on a local area network (LAN) or wide area network (WAN), such as a wiring closet where physical connections are not possible. This type of configuration can help save money by sharing bandwidth among multiple users and devices instead of having each user share their dedicated link that may not be able to handle all traffic at full capacity.

When you're using Ethernet switches to connect multiple devices, you'll want them all connected directly or indirectly via some kind of bus system. This would include things like buses within a hub or switches connecting multiple pieces of hardware. 

Advantages of Ethernet Ring Protection Switching (ERPS)

  1. Protects a network from incoming threats by dropping all traffic not destined for the protected network. It works by filtering out any packets that do not match its criteria, thus preventing them from entering or leaving your protected sublayer.
  2. ERPS switches protect legacy hubs and switches, Cisco Catalyst Switches, and modern systems with two 10/100/1000 Ethernet ports such as routers, firewall appliances, and other equipment that can be connected to a dedicated port or trunk.
  3. Ethernet Ring Protection Switching (ERPS) is a feature that provides security to networks without blocking all traffic. The switch protects the network by detecting any attempted malicious activity, such as an attack on your company's data center or server room. It then blocks the offending traffic from entering your network, thus protecting it from being hacked or hijacked. For example, if there is an existing security threat in your infrastructure and you have isolated some of your networks using EPPP, you can use the functions of an ERPS to block traffic on all ports except those connected to your switched segment(s)
  4. If the security threat has been contained on a segment or two far away from where the ERPS is located (and therefore considered unlikely), it may still be possible for this device to detect and drop packets from other segments that are not directly connected to its own. 

Wrapping Up:

The key benefit of using this technology is that it provides security without blocking all network traffic. This means you can still use other devices on your network, even if they are configured to connect through one of those non-trunked ports blocked by ERPS. In addition, using ERPS does not require any changes in configuration or software on either endpoints or switches; it simply works as an intelligent feature within existing equipment such as routers and switches. 


Ruijie Networks websites use cookies to deliver and improve the website experience.

See our cookie policy for further details on how we use cookies and how to change your cookie settings.

Cookie Manager

When you visit any website, the website will store or retrieve the information on your browser. This process is mostly in the form of cookies. Such information may involve your personal information, preferences or equipment, and is mainly used to enable the website to provide services in accordance with your expectations. Such information usually does not directly identify your personal information, but it can provide you with a more personalized network experience. We fully respect your privacy, so you can choose not to allow certain types of cookies. You only need to click on the names of different cookie categories to learn more and change the default settings. However, blocking certain types of cookies may affect your website experience and the services we can provide you.

  • Performance cookies

    Through this type of cookie, we can count website visits and traffic sources in order to evaluate and improve the performance of our website. This type of cookie can also help us understand the popularity of the page and the activity of visitors on the site. All information collected by such cookies will be aggregated to ensure the anonymity of the information. If you do not allow such cookies, we will have no way of knowing when you visited our website, and we will not be able to monitor website performance.

  • Essential cookies

    This type of cookie is necessary for the normal operation of the website and cannot be turned off in our system. Usually, they are only set for the actions you do, which are equivalent to service requests, such as setting your privacy preferences, logging in, or filling out forms. You can set your browser to block or remind you of such cookies, but certain functions of the website will not be available. Such cookies do not store any personally identifiable information.

Accept All

View Cookie Policy Details

Contact Us

Contact Us

How can we help you?

Contact Us

Get an Order help

Contact Us

Get a tech support