Cisco Systems OL-4266-08 manual Egress Queue Types, 42-25

Chapter 42 Configuring PFC QoS

Understanding How PFC QoS Works

•1p1q0t indicates:

–One strict-priority queue

–One standard queue with no configurable threshold (effectively a tail-drop threshold at 100 percent).

•1p1q8t indicates the following:

–One strict-priority queue

–One standard queue with these thresholds:

—Eight thresholds, each configurable as either WRED-drop or tail-drop —One non configurable (100 percent) tail-drop threshold

Egress Queue Types

To see the queue structure of an egress LAN port, enter the show queueing interface {ethernet fastethernet gigabitethernet tengigabitethernet} slot/port include type command.

The command displays one of the following architectures:

•2q2t indicates two standard queues, each with two configurable tail-drop thresholds.

•1p2q2t indicates the following:

–One strict-priority queue

–Two standard queues, each with two configurable WRED-drop thresholds

•1p3q1t indicates the following:

–One strict-priority queue

–Three standard queues with these thresholds:

—One threshold configurable as either WRED-drop or tail-drop —One nonconfigurable (100 percent) tail-drop threshold

•1p2q1t indicates the following:

–One strict-priority queue

–Two standard queues with these thresholds: —One WRED-drop threshold

—One non-configurable (100 percent) tail-drop threshold

•1p3q8t indicates the following:

–One strict-priority queue

–Three standard queues, each with eight thresholds, each threshold configurable as either WRED-drop or tail-drop

•1p7q4t indicates the following:

–One strict-priority queue

–Seven standard queues, each with four thresholds, each threshold configurable as either WRED-drop or tail-drop

	Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08		42-25