System information

Configuring Quality of Service

Configuring QoS

Cisco Small Business 200 Series Smart Switch Administration Guide 189

STEP 3 Click Apply. The queues are configured, and the switch is updated.

Mapping CoS/802.1p to a Queue

The

CoS/802.1p to Queue Page

maps 802.1p priorities to egress queues. The

CoS/802.1p to Queue Table determines the egress queues of the incoming

packets based on the 802.1p priority in their VLAN Tags. For incoming untagged

packets, the 802.1p priority will be the default CoS/802.1p priority assigned to the

ingress ports.

Default Mapping Queues

By changing the CoS/802.1p to Queue mapping and the Queue schedule method

and bandwidth allocation, it is possible to achieve the desired quality of services in

a network.

CoS/802.1p to Queue mapping is applicable only if CoS/802.1p is the trusted

mode and the packets belong to flows that are CoS trusted.

802.1p Values

(0-7, 7 being the

highest)

Queue

(4 queues 1-4, 4 being

the highest priority)

Notes

01 Background

11Best Effort

22Excellent Effort

33Critical Application

LVS phone SIP

43Video

54 Voice

Cisco IP phone default

64 Interwork Control

LVS phone RTP

74Network Control