Queue Scheduling Configuration Synchronization On Aggregation Ports - Huawei Quidway S3900 Series Operation Manual

Operation Manual - QoS&QoS Profile
Quidway S3900 Series Ethernet Switches-Release 1510
CIR
CBS
Peak information rate (PIR)
Excess burst size (EBS)
Two token buckets are used in this evaluation. Their rates of putting tokens into the
buckets are CIR and PIR respectively, and their sizes are CBS and EBS respectively
(the two buckets are called C bucket and E bucket respectively for short), representing
different permitted burst levels. In each evaluation, you can implement different
regulation policies in different conditions, including "enough tokens in C bucket",
"insufficient tokens in C bucket but enough tokens in E bucket" and "insufficient tokens
in both C bucket and E bucket".
II. TP
The typical application of TP is to supervise the specification of certain traffic into the
network and limit it within a reasonable range, or to punish the extra traffic. Therefore,
the network resources and the interests of the operators are protected. For example,
you can limit HTTP packets within 50% of the network bandwidth. If the traffic of a
certain connection is excess, TP can choose to drop the packets or to reset the priority
of the packets.
TP is widely used in policing the traffic into the network of internet service providers
(ISP).TP can classify the policed traffic and perform pre-defined policing actions
according to different evaluation results. These actions include:
Forward: Forward the packet whose evaluation result is "conforming" or mark
DSCP precedence for Diff-Serv packets and then forward them.
Drop: Drop the packet whose evaluation result is "nonconforming".
Modify the precedence and forward: Modify the priority of the packets whose
evaluation result is "partly-conforming" and forward them.
Enter the next-rank policing: TP can be piled up rank by rank and each rank
polices more detailed objects.
1.1.9 Queue Scheduling Configuration Synchronization on Aggregation
Ports
The feature of queue scheduling configuration synchronization on aggregation ports
makes the queue scheduling configuration synchronous on each port of the
aggregation port group.
Supporting the feature of queue scheduling configuration synchronization on the
ports in the aggregation port group
When you modify or delete the queue scheduling mode in Ethernet port view, the
queue scheduling modes of all the ports in the aggregation port group are modified or
deleted if this port belongs to an aggregation group; only the queue scheduling mode of
this port is modified or deleted if this port does not belong to any aggregation group.
Huawei Technologies Proprietary
1-7
Chapter 1 QoS Configuration