Exam HPE6-A73 topic 1 question 87 discussion

Page 822 Study Guide: ArubaOS- CX switches use an intra- switch queuing method called Virtual Output Queuing (VoQ). If the ingress buffer used a single queue, head of line (HOL) blocking could delay the traffic. If the packet at the front of the queue is destined out a congested port, it delays all packets behind it, even though those that are destined to non- congested ports. VoQ prevents this problem [Aruba Networks]

Wire speed and VOQ A network is only as fast as its slowest component. Without the right performance and capacity for your wired network, the move to Wi-Fi 6 isn’t feasible. Many legacy switches suffer from head-of-line blocking, which limits the throughput of each port—costing both time and the bottom line. Look for switches that have a non-blocking architecture with virtual output queuing (VOQ) and wire speed performance. While common in data center switches, such capabilities will also be critical for campus or edge networks with high-density Wi-Fi 6 deployments in order to: Prevent head-of-line blocking by optimizing traffic flows through the switch Achieve maximum performance on every port