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19.4 Configuring IPv6 Services in the FTTB+HGW Scenario
This section describes the methods for configuring IPv6 services in the FTTB+HGW scenario.
19.4.1 Application Scenario
The FTTB+HGW networking includes two scenarios: The ONU provides the voice service in
one scenario and the HGW provides the voice service in another scenario. After IPv6 is
introduced to the network, the voice service still uses IPv4 so that these two voice scenarios do
not change after IPv6 introduction.
FTTB+HGW Application Scenario
shows an FTTB+HGW network. The OLT is deployed at the CO and connects to
the MAN by aggregation, and the ONU is deployed in the buildings or street fiber distribution
terminals. Access interfaces are deployed on the HGW that connects to the ONU using LAN or
xDSL upstream transmission (deployed in user houses). Together with upper layer devices, the
FTTB+HGW network supports the HSI and IPTV services implemented by the schemes of the
Huawei fixed broadband solution for IPv6: IPv4/IPv6 DS+NAT+PPPoE, IPv4/IPv6 DS+NAT
+IPoE, and DS-Lite+PPPoE (for the HSI services) and IPv4/IPv6 DS+IPoE and IPv4/IPv6 DS
+PPPoE (for the IPTV service).
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Upstream networking: The HGW connects to the ONU through upstream ETH or xDSL
port.
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HSI service: The HGW has Layer 3 functions (such as PPPoE dial-up and NAT), which
enable multiple PCs of a family to access the Internet at the same time.
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If the HGW uses the IPv4/IPv6 DS scheme, the PPPoE or IPoE channel that supports
both IPv4 and IPv6 is established between the HGW and the BRAS. The OLT and ONU
perform Layer 2 forwarding, irrespective of whether the access service is IPv4 or IPv6.
Service configurations for IPv4 and IPv6 are the same. Only the ACL, anti-IP spoofing,
and DHCP option configurations for IPv4 and IPv6 are different.
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If the HGW uses the DS-Lite scheme, the PPPoE channel that supports only IPv6 is
established between the HGW and the BRAS. As for IPv4, the HGW encapsulates IPv4
packets and transmits them to the BRAS or CGN using the 4in6 tunnel. The OLT and
ONU perform Layer 2 forwarding, irrespective of whether the access service is IPv4 or
IPv6. Service configurations for IPv4 and IPv6 are the same. Only the ACL, anti-IP
spoofing, and DHCP option configurations for IPv4 and IPv6 are different.
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IPTV service: Users can preview or view IPTV programs by connecting an STB to the
HGW. STB supports IPv4/IPv6 DS and uses IPv4 or IPv6 (cannot be used together) to
carry IPTV services.
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If the STB uses IPoE, choose the ONU preferentially to duplicate multicast flows. On
the ONU, IPv6 and IPv4 multicast services are configured in the same way but with
different commands. On the OLT, service channels to the ONU need to be established,
multicast flows do not need to be duplicated, and IGMP IPv6 data needs to be
configured.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide
19 IPv6 Configuration
Issue 01 (2014-04-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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