Egress Peer Engineering (EPE) using BGP LU enables traffic engineering of the links between Autonomous Systems

Normally the ingress router in the following diagram has no control over an autonomous system border router’s

The BGP Prefix Independent Convergence (PIC) Edge feature refers to fast re convergence of traffic destined for BGP

One of the steps in the BGP best path selection algorithm compares the IGP cost of the BGP next hop, preferring the path

This feature removes an ARP entry when the physical port, on which the ARP entry's MAC address is learned, goes down.