Example: Configuring sub-VLAN-based IPv6 multicast VLAN

As shown in Figure 94:

• Layer 3 device Switch A runs MLD and acts as the MLD querier. Layer 2 device Switch B runs MLDv1 snooping.

• The IPv6 multicast source sends IPv6 multicast data to IPv6 multicast group FF1E::101. Receivers Host A, Host B, and Host C belong to VLAN 2, VLAN 3, and VLAN 4, respectively.

Configure a sub-VLAN-based IPv6 multicast VLAN on Switch B to meet the following requirements:

• Switch A sends the IPv6 multicast data to Switch B through the IPv6 multicast VLAN.

• Switch B forwards the IPv6 multicast data to the receivers in different user VLANs.

1. Configure Switch A:

   # Enable IPv6 multicast routing.

   <SwitchA> system-view
   [SwitchA] ipv6 multicast routing
   [SwitchA-mrib6] quit
   

   # Create VLAN 20, and assign HundredGigE 1/0/2 to the VLAN.

   [SwitchA] vlan 20
   [SwitchA-vlan20] port hundredgige 1/0/2
   [SwitchA-vlan20] quit
   

   # Assign an IPv6 address to VLAN-interface 20, and enable IPv6 PIM-DM on the interface.

   [SwitchA] interface vlan-interface 20
   [SwitchA-Vlan-interface20] ipv6 address 1::2 64
   [SwitchA-Vlan-interface20] ipv6 pim dm
   [SwitchA-Vlan-interface20] quit
   

   # Create VLAN 10.

   [SwitchA] vlan 10
   [SwitchA-vlan10] quit
   

   # Configure HundredGigE 1/0/1 as a hybrid port, and assign the port to VLAN 10 as a tagged VLAN member.

   [SwitchA] interface hundredgige 1/0/1
   [SwitchA-HundredGigE1/0/1] port link-type hybrid
   [SwitchA-HundredGigE1/0/1] port hybrid vlan 10 tagged
   [SwitchA-HundredGigE1/0/1] quit
   

   # Assign an IPv6 address to VLAN-interface 10, and enable MLD on the interface.

   [SwitchA] interface vlan-interface 10
   [SwitchA-Vlan-interface10] ipv6 address 2001::1 64
   [SwitchA-Vlan-interface10] mld enable
   [SwitchA-Vlan-interface10] quit
   

2. Configure Switch B:

   # Enable the MLD snooping feature.

   <SwitchB> system-view
   [SwitchB] mld-snooping
   [SwitchB-mld-snooping] quit
   

   # Create VLAN 2, assign HundredGigE 1/0/2 to the VLAN, and enable MLD snooping for the VLAN.

   [SwitchB] vlan 2
   [SwitchB-vlan2] port hundredgige 1/0/2
   [SwitchB-vlan2] mld-snooping enable
   [SwitchB-vlan2] quit
   

   # Create VLAN 3, assign HundredGigE 1/0/3 to the VLAN, and enable MLD snooping for the VLAN.

   [SwitchB] vlan 3
   [SwitchB-vlan3] port hundredgige 1/0/3
   [SwitchB-vlan3] mld-snooping enable
   [SwitchB-vlan3] quit
   

   # Create VLAN 4, assign HundredGigE 1/0/4 to the VLAN, and enable MLD snooping for the VLAN.

   [SwitchB] vlan 4
   [SwitchB-vlan4] port hundredgige 1/0/4
   [SwitchB-vlan4] mld-snooping enable
   [SwitchB-vlan4] quit
   

   # Create VLAN 10, and enable MLD snooping for the VLAN.

   [SwitchB] vlan 10
   [SwitchB-vlan10] mld-snooping enable
   [SwitchB-vlan10] quit
   

   # Configure HundredGigE 1/0/1 as a hybrid port, and assign the port to VLAN 10 as a tagged VLAN member.

   [SwitchB] interface hundredgige 1/0/1
   [SwitchB-HundredGigE1/0/1] port link-type hybrid
   [SwitchB-HundredGigE1/0/1] port hybrid vlan 10 tagged
   [SwitchB-HundredGigE1/0/1] quit
   

   # Configure VLAN 10 as an IPv6 multicast VLAN, and assign VLAN 2 through VLAN 4 as sub-VLANs to multicast VLAN 10.

   [SwitchB] ipv6 multicast-vlan 10
   [SwitchB-ipv6-mvlan-10] subvlan 2 to 4
   [SwitchB-ipv6-mvlan-10] quit
   

# Display information about all IPv6 multicast VLANs on Switch B.

[SwitchB] display ipv6 multicast-vlan
Total 1 IPv6 multicast VLANs.

IPv6 multicast VLAN 10:
  Sub-VLAN list(3 in total):
     2-4
  Port list(0 in total):

# Display information about IPv6 multicast groups in IPv6 multicast VLANs on Switch B.

[SwitchB] display ipv6 multicast-vlan group
Total 1 entries.

IPv6 multicast VLAN 10: Total 1 entries.
  (::, FF1E::101)
    Sub-VLANs (3 in total):
      VLAN 2
      VLAN 3
      VLAN 4

The output shows that IPv6 multicast group FF1E::101 belongs to IPv6 multicast VLAN 10. IPv6 multicast VLAN 10 contains sub-VLANs VLAN 2 through VLAN 4. Switch B will replicate the IPv6 multicast data of VLAN 10 to VLAN 2 through VLAN 4.