Diffserv Traffic Classification - 3Com SuperStack 3 3812 Implementation Manual

Figure 12 IEEE 802.1D traffic types
Figure 12
levels and how they are mapped to the eight supported traffic queues.
DiffServ traffic DiffServ is an alternative method of classifying traffic so that different
classification levels of service can be applied to it on a network. DiffServ is a layer 3
function; and the service to be applied is contained within the DSCP field,
which is in the IP header of a packet.
Traffic
Classification
Ingress Port
802.1D
illustrates IEEE 802.1D traffic types as well as associated priority
How Traffic Prioritization Works
Switch
802.1D
Service Levels
Background 1
Spare
2
Best Effort 0
Business Critical 3
Multimedia 4
Video 5
Voice 6
Network Control 7
Traffic Queues
Queue 1 Low Priority ( )
Queue 2
Queue 0
Queue 3
Egress Port
Queue 4
Queue 5
Queue 6
Queue 7 (High Priority)
55