User Manual5. Multicast service configuration 49www.qtech.ruOLT (config) # igmp mvlan 510 receive-port gpon-onu1 / 4: 3OLT (config) # igmp interface gpon-onu1 / 4: 3 version 3ONU configurations:OLT (config-gpon-onu1 / 4: 3) # tcont 1 profile T4-200MOLT (config-gpon-onu1 / 4: 3) # gemport 1 tcont 1OLT (config-gpon-onu1 / 4: 3) # service-port 1 gemport 1 user-vlan500 vlan 510OLT (config-gpon-onu1 / 4: 3) # remote uni eth_1 / 1 vlan-modetrunk tag 500OLT (config-gpon-onu1 / 4: 3) # remote multicast eth_1 / 1 enableOLT (config-gpon-onu1 / 4: 3) # remote multicast eth_1 / 1 igmpversion 3OLT (config-gpon-onu1 / 4: 3) # remote multicast eth_1 / 1 up vlan500 tag-action transparentOLT (config-gpon-onu1 / 4: 3) # remote multicast eth_1 / 1 downvlan 510 tag-action xlate 500Note:Do not configure the MVLAN before conversion, otherwise there will be possibility of failure to accessmulticast group.5.1.3. IGMP Controllable MulticastControllable multicast can control the user access to channels, including permit, deny and preview.Under preview permissions, you can control the number, duration, and interval ofthe user's preview.When the preview number reaches the maximum setting number, the OLT will force the user to leavethe appropriate multicast group and will not be allowed to join again for a certain period of time.Cac mode is controllable multicast, in a multicast group, the period, blackout and maxnbr of thejoining group can be limited:OLT (config) # igmp work-mode proxy OLT (config) # igmp cdr enableOLT (config) # igmp interface gpon-onu1 / 4: 3 cac eth_1 / 1 group224.1.1.1 previewOLT (config) # igmp interface gpon-onu1 / 4: 3 cac eth_1 / 1 group224.1.1.1 preview period 30OLT (config) # igmp interface gpon-onu1 / 4: 3 cac eth_1 / 1 group224.1.1.1 preview maxnbr 3OLT (config) # igmp interface gpon-onu1 / 4: 3 cac eth_1 / 1 group224.1.1.1 preview blackout 305.1.4. Show commandOLT (config) # show igmp dynamic-group================================================== =============MVLAN SOURCE GROUP TYPE INTERFACE-------------------------------------------------- -------------510 0.0.0.0 224.1.1.1 Dynamic gpon-onu1 / 4: 3