3Com Switch 4800G 24-Port - Ipv6 Multicast VLAN Configuration Examples; Displaying and Maintaining Ipv6 Multicast VLAN

610 CHAPTER 45: IPV6 MULTICAST VLAN CONFIGURATION
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■ The VLAN to be configured as an IPv6 multicast VLAN and the VLANs to be
configured as sub-VLANs of the IPv6 multicast VLAN must exist.
■ The total number of sub-VLANs of an IPv6 multicast VLAN must not exceed the
system-defined limit (an Switch 4800G supports a maximum of one IPv6
multicast VLAN and 127 sub-VLANs).
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CAUTION:
■ You cannot enable IPv6 multicast VLAN on a device with IPv6 multicast routing
enabled.
■ After a VLAN is configured into an IPv6 multicast VLAN, MLD Snooping must
be enabled in the VLAN before the IPv6 multicast VLAN feature can be
implemented, while it is not necessary to enable MLD Snooping in the
sub-VLANs of the IPv6 multicast VLAN.
Displaying and
Maintaining IPv6
Multicast VLAN
IPv6 Multicast VLAN
Configuration
Examples
Network requirements
■ As shown in Figure 183, Router A connects to an IPv6 multicast source (Source)
through GigabitEthernet 1/0/2, and to Switch A through GigabitEthernet
1/0/1.
■ Router A is an IPv6 multicast router while Switch A is a Layer 2 switch. Router A
acts as the MLD querier on the subnet.
■ Switch A’s GigabitEthernet 1/0/1 belongs to VLAN 1024, GigabitEthernet 1/0/2
through GigabitEthernet 1/0/4 belong to VLAN 11 through VLAN 13
respectively, and Host A through Host C are attached to GigabitEthernet 1/0/2
through GigabitEthernet 1/0/4 of Switch A.
■ Configure the IPv6 multicast VLAN feature so that Router A just sends IPv6
multicast data to VLAN 1024 rather than to each VLAN when the three hosts
attached to Switch A need the IPv6 multicast data.
Configure a specific VLAN as
an IPv6 multicast VLAN
multicast-vlan ipv6 vlan-id
enable
Required
By default, no VLAN is an IPv6
multicast VLAN.
Configure sub-VLANs for a
multicast VLAN
multicast-vlan ipv6 vlan-id
subvlan vlan-list
Required
By default, no sub-VLANs
exist.
To do… Use the command… Remarks
To do… Use the command… Remarks
Display information about an
IPv6 multicast VLAN and its
sub-VLANs
display multicast-vlan ipv6
[ vlan-id ]
Available in any view