Ethernet Ring Protection overview

Ethernet Ring Protection (ERP), a nonproprietary protocol described in ITU-T G.8032 (Version 1 and 2), integrates an Automatic Protection Switching (APS) protocol and protection switching mechanisms to provide Layer 2 loop avoidance and fast reconvergence in Layer 2 ring topologies. ERP supports multi-ring and ladder topologies. ERP can also function with IEEE 802.1ag to support link monitoring when non-participating devices exist within the Ethernet ring.

Note

Note

Before configuring ERP, you must configure a VLAN and the ports you require for your deployment.

This chapter describes ERP components, features, and how to configure, and manage ERP.

Configuration Considerations