No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - Ethernet Switching

S7700 and S9700 V200R011C10

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Application Scenarios for ERPS

Application Scenarios for ERPS

Generally, redundant links are used on an Ethernet switching network to provide link backup and enhance network reliability. The use of redundant links, however, may produce loops, causing broadcast storms and rendering the MAC address table unstable. As a result, communication quality deteriorates, and communication services may even be interrupted.

To prevent loops caused by redundant links, enable ERPS on the nodes of the ring network. ERPS is a Layer 2 loop-breaking protocol defined by the ITU-T, and provides fast convergence of carrier-class reliability standards.

Figure 19-14  Layer 2 application of ERPS

As shown in Figure 19-14, SwitchA through SwitchE constitute a ring. The ring runs ERPS to provide protection switching for Layer 2 redundant links and prevent loops that cause broadcast storms and render the MAC address table unstable.

Generally, the RPL owner port is blocked and does not forward service packets, preventing loops. If a fault occurs on the link between SwitchA and SwitchB, ERPS will unblock the blocked RPL owner port and traffic from User network1 and User network2 is forwarded through the path SwitchC ->SwitchD ->SwitchE.

Translation
Download
Updated: 2019-10-18

Document ID: EDOC1000178310

Views: 299605

Downloads: 141

Average rating:
This Document Applies to these Products
Related Version
Related Documents
Share
Previous Next