Service VLAN Tag Translation
CM D-CMTS OLT Layer 3 MAN
Device
Multicas
t service
The packets
of the
multicast
service do not
carry a
VLAN tag.
A service
flow is
created
between a
CM and a D-
CMTS.
CM management
packets and
multicast packets
carry the same
VLAN tag.
l When an OLT
forwards
services at
Layer 2, the
OLT
transparently
transmits
VLAN tags to a
MAN device.
l When an OLT
forwards
services at
Layer 3, the
OLT adds a
unique VLAN
tag to the
packets of a
service type.
l When an OLT
forwards
services at
Layer 2, a Layer
3 MAN device
forwards the
services at
Layer 3 and adds
a unique VLAN
tag to the
packets of a
service type.
l When an OLT
forwards
services at
Layer 3, a Layer
3 MAN device
forwards the
services at
Layer 3.
VoIP
service
The packets
of the VoIP
service do not
carry a
VLAN tag.
A service
flow is
created
between a
CM and a D-
CMTS.
CM management
packets and VoIP
packets carry the
same VLAN tag.
l When an OLT
forwards
services at
Layer 2, the
OLT
transparently
transmits
VLAN tags to a
MAN device.
l When an OLT
forwards
services at
Layer 3, the
OLT adds a
unique VLAN
tag to the
packets of a
service type.
l When an OLT
forwards
services at
Layer 2, a Layer
3 MAN device
forwards the
services at
Layer 3 and adds
a unique VLAN
tag to the
packets of a
service type.
l When an OLT
forwards
services at
Layer 3, a Layer
3 MAN device
forwards the
services at
Layer 3.
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.
1677
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