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# On Router A, enable IPv6 multicast routing, enable IPv6 PIM-SM on each interface, and enable
IPv6 BIDIR-PIM.
<RouterA> system-view
[RouterA] multicast ipv6 routing-enable
[RouterA] interface ethernet 1/1
[RouterA-Ethernet1/1] pim ipv6 sm
[RouterA-Ethernet1/1] quit
[RouterA] interface serial 2/1
[RouterA-Serial2/1] pim ipv6 sm
[RouterA-Serial2/1] quit
[RouterA] pim ipv6
[RouterA-pim6] bidir-pim enable
[RouterA-pim6] quit
# On Router B, enable IPv6 multicast routing, enable IPv6 PIM-SM on each interface, enable MLD
on interface Ethernet 1/1, and enable IPv6 BIDIR-PIM.
<RouterB> system-view
[RouterB] multicast ipv6routing-enable
[RouterB] interface ethernet 1/1
[RouterB-Ethernet1/1] mld enable
[RouterB-Ethernet1/1] pim ipv6 sm
[RouterB-Ethernet1/1] quit
[RouterB] interface serial 2/1
[RouterB-Serial2/1] pim ipv6 sm
[RouterB-Serial2/1] quit
[RouterB] interface serial 2/2
[RouterB-Serial2/2] pim ipv6 sm
[RouterB-Serial2/2] quit
[RouterB] pim ipv6
[RouterB-pim6] bidir-pim enable
[RouterB-pim6] quit
# On Router C, enable IPv6 multicast routing, enable IPv6 PIM-SM on each interface, and enable
IPv6 BIDIR-PIM.
<RouterC> system-view
[RouterC] multicast ipv6 routing-enable
[RouterC] interface serial 2/1
[RouterC-Serial2/1] pim ipv6 sm
[RouterC-Serial2/1] quit
[RouterC] interface serial 2/2
[RouterC-Serial2/2] pim ipv6 sm
[RouterC-Serial2/2] quit
[RouterC] interface loopback 0
[RouterC-LoopBack0] pim ipv6 sm
[RouterC-LoopBack0] quit
[RouterC] pim ipv6
[RouterC-pim6] bidir-pim enable
# On Router D, enable IPv6 multicast routing, enable IPv6 PIM-SM on each interface, enable MLD
on interface Ethernet 1/1, and enable IPv6 BIDIR-PIM.
<RouterD> system-view