Output port queueing Switch Switch Fabric Fabric Output Port Contention One Packel at Time f Time Later buffering when arrival rate via switch exceeds output line speed queueing(delay)and loss due to output port buffer overflow! Network Layer 4-28Network Layer 4-28 Output port queueing  buffering when arrival rate via switch exceeds output line speed  queueing (delay) and loss due to output port buffer overflow!