PLANET XGS3-24042 - Manual (Page 461)

49-5
Switch(config)#interface vlan 1
Switch(Config-if-Vlan1)#ipv6 address 2000:10:1:1::1/64
Switch(Config-if-Vlan1)#ipv6 pim dense-mode
Switch(Config-if-Vlan1)#exit
Switch(config)#interface vlan2
Switch(Config-if-Vlan2)#ipv6 address 2000:12:1:1:: 1/64
Switch(Config-if-Vlan2)#ipv6 pim dense-mode
(2) Configure SwitchB:
Switch(config)#ip pim multicast-routing
Switch(config)#interface vlan 1
Switch(Config-if-Vlan1)#ipv6 address 2000:12:1:1::2/64
Switch(Config-if-Vlan1)#ipv6 pim dense-mode
Switch(Config-if-Vlan1)#exit
Switch(config)#interface vlan 2
Switch(Config-if-Vlan2)#ipv6 address 2000:20:1:1::1/64
Switch(Config-if-Vlan2)#ipv6 pim dense-mode
49.1.4 PIM-DM6 Troubleshooting
When configuring and using PIM-DM protocol, PIM-DM 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 PIM Protocol is turned on in Global Mode (use ipv6 pim multicast-routing command )
 Start PIM-DM Protocol on the interface (use ipv6 pim dense-mode command)
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 PIM-DM, then use debug
commands such as debug ipv6 pim, copy DEBUG information in 3 minutes and send to Technology Service
Center.
49.2 PIM-SM6
49.2.1 Introduction to PIM-SM6
PIM-SM6（Protocol Independent Multicast, Sparse Mode）is the IPv6 version of Protocol Independent
Multicast Sparse Mode. It is a multicast routing protocol in sparse mode and mainly used in large network with
group members distributed relatively sparse and wide. It is no difference from the IPv4 version PIM-SM
except the addresses it uses are IPv6 addresses. Thus we don’t differentiate between PIM-SM and PIM-SM6
in this chapter. All PIM-SM in the text without specific explanation is IPv6 version PIM-SM. Unlike the
Flooding-Prune of Dense Mode, PIM-SM Protocol assumes no host needs receiving multicast data packets.
PIM-SM router forwards multicast data packets to a host only on definite request.
By setting RP (Rendezvous Point) and BSR (Bootstrap Router), PIM-SM announce multicast packet to all