Service
Type
Upstrea
m
Bandwi
dth
Downstream
Bandwidth
Bandwidth Description
IPTV
service
(high
definitio
n
program
)
transmitting IGMP packets, which requires
little bandwidth and can be neglected.
/ 9.7 Mbit/s channel
Note
l Rate limit on the BRAS or SR is recommended. OLTs and ONUs do not limit rates on
service flows. If the BRAS does not support rate limit, OLTs can limit rates on service
flows using traffic profiles.
l Different service packets of ONUs are distinguished by 802.1p priorities and are mapped
to GEM ports based on 802.1p priorities so that packets are transmitted to different GEM
ports. Each GEM port (each service) corresponds to a T-CONT or all GEM ports share a
T-CONT.
l The sum of assured bandwidth of all ONTs under a PON port and the fixed bandwidth of
OMCI management channel is smaller than the GPON upstream bandwidth. Some
bandwidth must be reserved for future service expansion.
11.2.3 Principle of Internet Access Service Data Plan
The Internet access service plan mainly includes the plan of the VLAN and VLAN translation
policy in different network scenarios.
VLAN Planning and VLAN Translation Policy on PON Networks
Application
Scenario
VLAN Plan VLAN Translation
ONU OLT
FTTB networking
(without HGWs)
Two-tagged
VLAN (S-VLAN
+C-VLAN)
The inner C-VLAN is
mapped based on user
ports to ensure that
ONUs under the same
PON board do not
have the same C-
VLAN.
The OLT translates
VLANs and adds an S-
VLAN. C'-VLAN <->
S-VLAN + C-VLAN
FTTB/FTTC+HGW
networking (ONU
providing the VoIP
service)
HGWs (LAN
upstream
transmission)
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.
837
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