FAQ-How To Distinguish The MVLAN And SVLAN In GPON Multicast Service

Q:

When the user chooses the program, then the STB(Set Top Box) will send the IGMP message to ONU(Optical Network Unit), so which VLAN is tagged from the ONU side? when the media stream is coming down from the olt side, so which VLAN is used to receive the stream on ONU side?


 

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A:

 In GPON (Gigabit-capable Passiv Optical Network ) multicast service single-copy mode: the S-VLAN (Service VLAN) is used to carry the IGMP message from ONU(Optical Network Unit) to OLT(Optical Network Terminal); the M-VLAN (multicast VLAN ) is used to carry the multicast media stream from the OLT to ONU, the gemport 4095 (default) is used to forward the multicast stream from OLT to ONU.

For example
Network Topology: IPTV server->IP network->OLT(MA5600T)->ONT(HG850)->STB-->TV
Describe:  OLT uplink port 0/19/0, OLT GPON port 0/20, SVLAN 8, MVLAN 200, ONU id 0, gem port 4, ONU eth port 3->STB

Configuration file:
 

• configure dba profile
  • ma5600t(config)#dba-profile add profile-id 11 type2 assure 2048
• configure ont line profile
  • ma5600t(config)# ont-lineprofile gpon profile-id 20
  • ma5600t(config-gpon-lineprofile-20)#tcont 5 dba-profile-id 11
  • ma5600t(config-gpon-lineprofile-20)#gem add 4 eth tcont 5
  • ma5600t(config-gpon-lineprofile-20)#gem mapping 4 4 vlan 8
  • ma5600t(config-gpon-lineprofile-20)#commit
• configure ont service profile
  • ma5600t(config)#ont-srvprofile gpon profile-id 30
  • ma5600t(config-gpon-srvprofile-30)#ont-port eth 4 pots 2
  • ma5600t(config-gpon-srvprofile-30)#port vlan eth 3 8
  • ma5600t(config-gpon-srvprofile-30)#commit
• configure ont and native vlan
  • ma5600t(config)# interface gpon 0/2
  • ma5600t(config-if-gpon-0/2)#port 0 ont-auto-find enable
  • ma5600t(config-if-gpon-0/2)#ont confirm 0 ontid 0 sn-auth 32303131d659fd40 omci ontlineprofile-id 20 ont-srvprofile-id 30
  • ma5600t(config-if-gpon-0/2)#ont port native-vlan 0 0 eth 3 vlan 8
• configure traffic table
  • ma5600t(config)#traffic table ip index 41 cir 20480 pir 40960 cbs 20480 pbs 40960 priority user-cos 5 priority-policy local-setting
• provision vlans
  • ma5600t(config)#vlan 8 smart ma5600t(config)#port vlan 8 0/19 0
  • ma5600t(config)#service-port 3 vlan 8 gpon 0/2/0 ont 0 gemport 4 multi-service user-vlan 8 rx-cttr 41 tx-cttr 41
• configure the igmp and multicast vlan
  • ma5600t(config)#btv
  • ma5600t(config-btv)#igmp user add service-port 3 no-auth
  • ma5600t(config)#vlan 200 smart
  • ma5600t(config)#port vlan 200 0/19 0
  • ma5600t(config)#multcast-vlan 200
  • ma5600t(config-mvlan200)#igmp uplink-port 0/19/0
  • ma5600t(config-mvlan200)#igmp match mode disable
  • ma5600t(config-mvlan200)#igmp mode proxy
  • ma5600t(config-mvlan200)#igmp multicast-vlan member service-port 3

In GPON  multicast single-copy mode: the ONU send the IGMP message via SVLAN, in the case the VLAN 8 is tagged on ONU side , and then OLT receive the IGMP message from SVLAN 8.

In GPON multicast single-copy mode: the multicast stream is carried via multicast gem port 4095 from OLT to ONU direction, the VLAN is MVLAN 200, so the ONU can receive the multicast stream from VLAN 200.

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