Licensing Requirements and Limitations for ERPS

Other network elements are required to support ERPS functions.

ERPS is a basic feature of a switch and is not under license control.

All models of S2720, S5700, and S6700 series switches support ERPS.

For details about software mappings, visit Hardware Query Tool and search for the desired product model.

V200R002 and earlier versions support only ERPSv1.
Before adding a port to an ERPS ring, ensure that port security has been disabled on the port. Otherwise, loops cannot be eliminated.
Before adding a port to an ERPS ring, ensure that the Spanning Tree Protocol (STP), Rapid Ring Protection Protocol (RRPP), Smart Ethernet Protection (SEP), or Smart Link is not enabled on the port.
The service loopback function and ERPS cannot be configured on an Eth-Trunk simultaneously.
The S6700-EI does not support association between an ERPS interface and Ethernet CFM.