Manual

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Москва, Новозаводская ул., 18, стр. 1
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Switch (config) #ipv6 pim multicast-routing
Switch (config) #ipv6 pim rp-address 3FFE::1
Switch (config) #interface vlan1
Switch (Config-if-Vlan1) #ipv6 address 3FFE::2/64
Switch (Config-if-Vlan1) #ipv6 pim sparse-mode
Switch (Config-if-Vlan1) #exit
Switch (config) #interface vlan2
Switch (Config-if-Vlan2) #ipv6 address 3FFA::1/64
Switch (Config-if-Vlan2) #ipv6 pim sparse-mode
Switch (Config-if-Vlan2) #ipv6 mld query-timeout 150
29.6.4 MLD Troubleshooting Help
When configuring and using MLD protocol, MLD protocol may fail to work normally due to
physical connections, incorrect configuration and so on. So, users shall note the following
points:
Assure the physical connection is correct.
Assure the protocol of interface and link is UP (use show interface command)
Assure to start one kind of multicast protocol on the interface
Assure the time of the timers of each router on the same network segment is consistent;
usually we recommend the default setting.
Unicast route shall be used to carry out RPF examination for multicast protocol. So the
correctness of unicast route shall be guaranteed above all.
If all attempts fail to solve the problems on MLD, please use debug commands such as debug
ipv6 MLD event/packet, and copy DEBUG information in 3 minutes and send to Technology
Service Center.
29.7 MLD Snooping
29.7.1 Introduction to MLD Snooping
MLD, the Multicast Listener Discovery Protocol, is used to realize multicasting in the IPv6.
MLD is used by the network equipments such as routers which supports multicast for multicast
listener discovery, also used by listeners looking forward to join certain multicast group
informing the router to receive data packets from certain multicast address, all of which are
done through MLD message exchange. First the router send an MLD Multicast listener Query
message through a multicast address which can address all the listeners (namely ff02::1).
Once there is a listener who wishes to join the multicast address, it will send a MLD Multicast
listener Report back through the multicast address.
MLD Snooping is namely the MLD listening. The switch restricts the multicast traffic from
flooding through MLD Snooping, and forward the multicast traffic to ports associated to