Which feature allows for resilience in Carrier Ethernet networks?

The feature that provides resilience in Carrier Ethernet networks is Ethernet Ring Protection Switching (ERPS). This technology is specifically designed to enhance network reliability by allowing for rapid recovery in the event of a link failure. In a ring topology, if one link goes down, ERPS enables the network to quickly reconfigure and maintain service by rerouting traffic through an alternate path. This minimizes disruptions and ensures continuous service availability, which is critical for Carrier Ethernet services that demand high reliability.

Dynamic Bandwidth Allocation (DBA) focuses on optimizing bandwidth usage among multiple users but does not inherently provide resilience against network failures. Link Aggregation Control Protocol (LACP) allows for the grouping of multiple physical links into a single logical link for increased capacity and redundancy, yet it does not offer the rapid failover capabilities that ERPS provides. Point-to-Multipoint configuration refers to a design that allows communication from one point to multiple points but does not in itself establish resilience against network failures.