Introduction to qos features, Traffic classification – H3C Technologies H3C S3100 Series Switches User Manual
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1-3
Category
Features
Refer to…
following types:
z
Basic ACLs
z
Advanced ACLs
z
Layer-2 ACLs (applicable
only to the S3100-EI
series)
z
IPv6 ACLs (applicable
only to the S3100-EI
series)
refer to
.
S3100-EI series QoS actions
for packets matching the
specified ACL:
z
Priority marking
z
Traffic policing
z
Traffic redirecting
z
Traffic accounting
z
Traffic mirroring
z
VLAN marking
z
For information about priority marking, refer
to
z
For information about traffic policing, refer to
Traffic Policing and Traffic Shaping
.
z
For information about traffic redirecting, refer
to
.
z
For information about traffic accounting, refer
to
z
For information about traffic mirroring, refer
to
.
z
For more information about VLAN marking,
refer to
.
QoS action
QoS actions directly
configured as required:
z
Priority trust mode
z
Traffic shaping
(applicable only to the
S3100-EI series)
z
Line rate
z
Burst
z
For information about priority trust mode,
refer to
z
For information about traffic shaping, refer to
Traffic Policing and Traffic Shaping
.
z
For information about line rate, refer to
z
For information about the burst function, refer
to
Congestion
management
SP (applicable only to the
S3100-EI series), WRR, and
HQ-WRR queue scheduling
algorithms
For introduction to SP, WRR, and HQ-WRR
queue scheduling algorithms, refer to
Introduction to QoS Features
Traffic Classification
Traffic here refers to service traffic; that is, all the packets passing the switch.
Traffic classification means identifying packets that conform to certain characteristics according to
certain rules. It is the foundation for providing differentiated services.
In traffic classification, the priority bit in the type of service (ToS) field in IP packet header can be used to
identify packets of different priorities. The network administrator can also define traffic classification
policies to identify packets by the combination of source address, destination address, MAC address, IP
protocol or the port number of an application. Normally, traffic classification is done by checking the
information carried in packet header. Packet payload is rarely adopted for traffic classification. The
identifying rule is unlimited in range. It can be a quintuplet consisting of source address, source port
number, protocol number, destination address, and destination port number. It can also be simply a
network segment.