Table 16-3 QoS planning principles
Service Packet
Directi
on
QoS Planning
CM or Switch D-CMTS OLT
Cable
modem
(CM)
control
service,
HSI
service,
or VoIP
service
Upstrea
m
1. A CM
classifies
flows for
service
packets.
2. A CM
schedules
queues
according to
the priorities
of DOCSIS
service
flows.
QoS parameters are
defined in a CM
configuration file.
Using the QoS
parameter settings, a D-
CMTS limits service
rates or schedules
queues by priorities. In
addition, an OLT
supports the
configuration of a QoS
profile, which defines
QoS parameters for
various CM services. If
a QoS parameter is
defined both in a CM
configuration file and a
QoS profile, the
configuration in the CM
configuration file
preferentially takes
effect.
1. A D-CMTS limits
CM service rates
based on service
priority.
2. A D-CMTS limits
the rate of a CM
service flow group.
3. A D-CMTS
schedules queues
for service flows.
GPON module
1. All service flows are
mapped from
GPON
encapsulation mode
(GEM) port 0 to
transmission
container (T-
CONT) 1.
2. T-CONT 1 is bound
to the default
An OLT maps the
priority of a DOCSIS
service flow to the
802.1p field in the
Ethernet header and
uses the 802.1p priority
to schedule queues.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide
16 OptiCable D-CMTS Configuration (MA5633 Working as
a Standalone NE)
Issue 01 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1674
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