IPv6 Multicast Protocol
378
Switch(config)#ipv6 access-list 8000 permit any-source ff1e::1
Switch(config)#ipv6 access-list 8001 permit any any
Switch(config)#ipv6 multicast source-control
Switch(config)#interface Ethernet1/0/4
Switch(Config-If-Ethernet1/0/4)#ipv6 multicast source-control access-group 8000
Switch(config)#interface Ethernet1/0/25
Switch(Config-If-Ethernet1/0/25)#ipv6 multicast source-control access-group 8001
2
．
Destination control
We want to confine that the users of the segment whose address is
fe80::203:fff:fe01:228a/64 can not join the ff1e::1/64 group, so we can configure as
follows:
First, enable MLD Snooping in the VLAN where it locates (in this example, it is
VLAN2).
Switch(config)#ipv6 mld snooping
Switch(config)#ipv6 mld snooping vlan 2
Then configure relative destination control access list and configure specified IPv6
address to use this access list.
Switch(config)#ipv6 access-list 9000 deny any ff1e::1/64
Switch(config)#ipv6 access-list 9000 permit any any
Switch(config)#multicast destination-control
Switch(config)#ipv6 multicast destination-control fe80::203:fff:fe01:228a/64 access-group
9000
Thus, the users of this segment can only join groups other than 2ff1e::1/64.
3
．
Multicast policy
Server 2008::1 is sending important multicast data in group ff1e::1, we can configure
on its access switch as follows:
Switch(config)#ipv6 multicast policy 2008::1/128 ff1e::1/128 cos 4
Thus this multicast flow will have a priority of 4, when it passes the TRUNK port of this
switch to another switch (generally speaking, it is a relatively high priority, the data with
higher priority might be protocol data, if a higher priority is set, when there is too much
multicast data, the switch protocol might operate abnormally).
44.1.4
IPv6 DCSCM Troubleshooting
IPv6 DCSCM module acts like ACL, so most problems are caused by improper
configuration. Please read the instructions above carefully.