User's Manual

49-20
Switch(Config-If-Vlan2)# ipv6 address 2000:24:1:1::4/64
Switch(Config-If-Vlan2)# ipv6 pim sparse-mode
Switch(Config-If-Vlan2)#exit
Switch(config)#interface vlan 3
Switch(Config-If-Vlan3)# ipv6 address 2000:40:1:1::1/64
Switch(Config-If-Vlan3)# ipv6 pim sparse-mode
Switch(Config-If-Vlan3)#exit
Switch(config)#ipv6 access-list 500 permit ff1e::1/64
Switch(config)#ip pim ssm range 500
49.4.4 PIM-SSM6 Troubleshooting
When configuring the PIM-SSM6 protocol, it may fail to work because of the failure of physical connection or
the mis-configurations. To debug these errors, attention should be paid to the following lists.
 Make sure the physical links are connected correctly.
 Make sure the state of the data link layer has become UP. (Use show interface command).
 Make sure PIM6 is enabled in global configuration mode (Refer to the command ipv6 pim
multicast-routing).
 Make sure PIM-SM6 is configured on the interface (Refer to the command ipv6 pim sparse-mode)
 Make sure SSM6 is configure in global configuration mode.
 The multicast protocol uses the unicast routing to make RPF check. Hence, single-cast routing should
be verified firstly.
If problems could not be fixed with the above check list, please enable the command of debug ipv6 pim
event and debug ipv6 pim packet, and save the debug information for 3 minutes, and send if to Technology
Service Center.
49.5 IPv6 DCSCM
49.5.1 Introduction to IPv6 DCSCM
The technology of IPv6 DCSCM (Destination Control and Source Control Multicast) includes three aspects:
the multicast source control, the multicast user control and the service-priority-oriented policy multicast.
IPv6 DCSCM Controllable Multicast technology proceeds as the following way:
1. If source controlled multicast is configured on the edge switches, only the multicast data of the
specified group from the specified source can pass.
2. The RP switches which are the core of PIM-SM will directly send REGISTER_STOP as response to
the REGISTER messages not from the specified source and specified group, and no entry is allowed to
be created. (This task is implemented in the PIM-SM module).
The control of multicast users of IPv6 DCSCM technology is implemented on the basis of controlling the MLD
message sent from the users, so the control module is MLD snooping and the MLD module, the control logic
of which includes the following three methods: controlling according to the VLAN+MAC sending the message,