VLAN Planning and VLAN Translation Policy on Ethernet Cascading Networks
Application
Scenario
VLAN
Plan
VLAN Translation
MDU/GE Remote Extended Subrack OLT/
Master
Subrac
k
FTTB and FTTC
Ethernet cascading
(MDUs serving as
independent nodes)
Two-tag
VLAN
solution
Without HGWs: The outer S-VLAN is
planned based on MDUs and the inner C-
VLAN identifies a user. Ensure that the C-
VLANs of users using the same S-VLAN do
not repeat each other.
LAN access using HGWs:
l Untagged upstream packets of HGWs:
MDUs map C-VLANs based on user ports
and add S-VLANs to packets.
l Tagged upstream packets of HGWs:
MDUs translate user VLANs to C-VLANs
(user VLAN <-> C-VLAN) and add S-
VLANs to packets.
xDSL access using HGWs:
l Asynchronous transfer mode (ATM)
upstream transmission: MDUs translate
PVCs to C-VLANs (PVC <-> C-VLAN)
and add S-VLANs to packets. Ensure that
the C-VLANs of users using the same S-
VLAN do not repeat each other.
l Packet transfer mode (PTM) upstream
transmission: Untagged upstream packets
of HGWs: MDUs map C-VLANs based
on user ports and add S-VLANs to
packets. Tagged upstream packets of
HGWs: MDUs translate user VLANs to
C-VLANs (user VLAN <-> C-VLAN)
and add S-VLANs to packets. Ensure that
the C-VLANs of users using the same S-
VLAN do not repeat each other.
The
OLT
transmit
s
packets
transpar
ently.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide 11 FTTB and FTTC Solution Configuration
Issue 01 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
839
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