Qtech QSW-3200-28T [67/136] Qos configuration

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14. Copy packet to CPU

User can copy specified packet to CPU according to the need of its QoS strategies.

System realizes QoS function according to accessing control list, which includes: flow monitor,

interface speed limit, packet redirection, priority mark, queue scheduler, flow mirror, flow

statistics and coping packet to CPU.

8.2 QOS Configuration

8.2.1 QoS Configuration list

QOS Configuration includes:

 Packet redirection configuration

 Priority configuration

 Queue-scheduler configuration

 The cos-map relationship of hardware priority queue and priority of IEEE802.1p protocol

Define corresponded ACL before configuring QoS.

8.2.2 Queue-scheduler configuration

When network congestion, it must use queue-scheduler to solve the problem of resource

competition.

Use following command to configure queue-scheduler.

Configure it in global configuration mode.

Configure queue-scheduler

queue-scheduler { strict-priority | wrr queue1-weight queue2-weight queue3-weight queue4-

weight queue5-weight queue6-weight queue7-weight queue8-weight | sp-wrr queue1-weight

queue2-weight queue3-weight }

Disable queue-scheduler

no queue-scheduler

System supports three types of queue-scheduler mode: Strict-Priority Queue, Strict-Priority

Queue and Weighted Round Robin (SP+WRR) and Weighted Round Robin (WRR).

By default, switch uses Strict-Priority Queue.

The detailed command refers to the corresponding command line reference.

8.2.3 The cos-map relationship of hardware priority queue and

priority of IEEE802.1p protocol

There are 4 hardware priority queues which are from 0 to 3, of which 3 is the

The default mapping is the mapping defined by 802.1p:

802.1p: 0 1 2 3 4 5 6 7

packed-priority: 0 0 1 1 2 2 3 3

Use queue-scheduler cos-map command to configure 4 cos-map relationship of hardware

priority queue and 8 priority of IEEE802.1p protocol

Use following command in global configuration moide.

queue-scheduler cos-map [ queue-number ] [ packed-priority ]

Use following command to display the priority cos-map.

show queue-scheduler cos-map

For example:

! Configure packed-priority 1 to mapped priority 6 of IEEE 802.1p