Question

A service provider deploys an EVPN-VPWS service on IOS XR to connect two customer sites across the MPLS core. The customer's CE at Site A is dual-homed to two PEs (PE1 and PE2) using a single LACP bundle (Ethernet Segment). The requirement is that only one PE forwards traffic for the pseudowire at any time, while the other remains as a hot standby that takes over instantly on failure. Which EVPN Ethernet Segment redundancy mode must be configured to meet this requirement?

Accepted Answer

Single-active mode, where DF election designates one PE per Ethernet Segment to forward traffic

Answer

All-active mode, so both PEs forward and load-balance flows across the Ethernet Segment

Answer

Port-active mode with both PEs advertising the same MAC and flooding unknown unicast

Answer

Static pseudowire redundancy using manual primary/backup neighbor priority values