XCO supports Quality of Service (QoS) configuration on 9920 devices.
QoS provides preferential treatment to specific traffic that is received on multiple ingress interfaces or Test Access Points (TAPs). QoS enables a networking device prioritize critical traffic streams and provides dedicated bandwidth for effective delivery.
QoS aggregates, filters, and forwards traffic to a monitoring tool on an egress interface or egress group. The forwarding decision is based on the access control lists (ACLs) and route maps applied on the aggregated logical interface or port channel.
QoS can selectively drop the low priority traffic streams to allow high priority traffic to pass through. QoS manages traffic delivery using queues, buffers, and schedulers for maximum throughput.
QoS supports eight queues per egress port on a device. The highest queue priority is q7 and q0 is the lowest queue priority.
The configured QoS can be used in policy configuration and rule matches. For more information, see Create an Ingress Policy for a Device.