Example: Configuring VLAN-based static ports

As shown in Figure 86:

• Router A runs MLDv1 and acts as the MLD querier. Switch A, Switch B, and Switch C run MLDv1 snooping.

• Host A and Host C are permanent receivers of IPv6 multicast group FF1E::101.

Configure static ports to meet the following requirements:

• To enhance the reliability of IPv6 multicast traffic transmission, configure HundredGigE 1/0/3 and HundredGigE 1/0/5 on Switch C as static member ports for IPv6 multicast group FF1E::101.

• Suppose the STP runs on the network. To avoid data loops, the forwarding path from Switch A to Switch C is blocked. IPv6 multicast data flows to the receivers attached to Switch C only along the path of Switch A—Switch B—Switch C. When this path is blocked, a minimum of one MLD query-response cycle must be completed before IPv6 multicast data flows to the receivers along the path of Switch A—Switch C. In this case, the multicast delivery is interrupted during the process. For more information about the STP, see Layer 2—LAN Switching Configuration Guide.

  Configure HundredGigE 1/0/3 on Switch A as a static router port. Then, IPv6 multicast data can flow to the receivers nearly uninterrupted along the path of Switch A—Switch C when the path of Switch A—Switch B—Switch C is blocked.

  Figure 86: Network diagram

  

1. Assign an IPv6 address and prefix length to each interface, as shown in Figure 86. (Details not shown.)

2. Configure Router A:

   # Enable IPv6 multicast routing.

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

   # Enable MLD on HundredGigE 1/0/1.

   [RouterA] interface hundredgige 1/0/1
   [RouterA-HundredGigE1/0/1] mld enable
   [RouterA-HundredGigE1/0/1] quit
   

   # Enable IPv6 PIM-DM on HundredGigE 1/0/2.

   [RouterA] interface hundredgige 1/0/2
   [RouterA-HundredGigE1/0/2] ipv6 pim dm
   [RouterA-HundredGigE1/0/2] quit
   

3. Configure Switch A:

   # Enable the MLD snooping feature.

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

   # Create VLAN 100, and assign HundredGigE 1/0/1 through HundredGigE 1/0/3 to the VLAN.

   [SwitchA] vlan 100
   [SwitchA-vlan100] port hundredgige 1/0/1 to hundredgige 1/0/3
   

   # Enable MLD snooping for VLAN 100.

   [SwitchA-vlan100] mld-snooping enable
   [SwitchA-vlan100] quit
   

   # Configure HundredGigE 1/0/3 as a static router port.

   [SwitchA] interface hundredgige 1/0/3
   [SwitchA-HundredGigE1/0/3] mld-snooping static-router-port vlan 100
   [SwitchA-HundredGigE1/0/3] quit
   

4. Configure Switch B:

   # Enable the MLD snooping feature.

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

   # Create VLAN 100, and assign HundredGigE 1/0/1 and HundredGigE 1/0/2 to the VLAN.

   [SwitchB] vlan 100
   [SwitchB-vlan100] port hundredgige 1/0/1 hundredgige 1/0/2
   

   # Enable MLD snooping for VLAN 100.

   [SwitchB-vlan100] mld-snooping enable
   [SwitchB-vlan100] quit
   

5. Configure Switch C:

   # Enable the MLD snooping feature.

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

   # Create VLAN 100, and assign HundredGigE 1/0/1 through HundredGigE 1/0/5 to the VLAN.

   [SwitchC] vlan 100
   [SwitchC-vlan100] port hundredgige 1/0/1 to hundredgige 1/0/5
   

   # Enable MLD snooping for VLAN 100.

   [SwitchC-vlan100] mld-snooping enable
   [SwitchC-vlan100] quit
   

   # Configure HundredGigE 1/0/3 and HundredGigE 1/0/5 as static member ports for IPv6 multicast group FF1E::101.

   [SwitchC] interface hundredgige 1/0/3
   [SwitchC-HundredGigE1/0/3] mld-snooping static-group ff1e::101 vlan 100
   [SwitchC-HundredGigE1/0/3] quit
   [SwitchC] interface hundredgige 1/0/5
   [SwitchC-HundredGigE1/0/5] mld-snooping static-group ff1e::101 vlan 100
   [SwitchC-HundredGigE1/0/5] quit
   

# Display static router port information for VLAN 100 on Switch A.

[SwitchA] display mld-snooping static-router-port vlan 100
VLAN 100:
  Router ports (1 in total):
    HGE1/0/3

The output shows that HundredGigE 1/0/3 on Switch A has become a static router port.

# Display static MLD snooping group entries in VLAN 100 on Switch C.

[SwitchC] display mld-snooping static-group vlan 100
Total 1 entries).

VLAN 100: Total 1 entries).
  (::, FF1E::101)
    Host ports (2 in total):
      HGE1/0/3
      HGE1/0/5

The output shows that HundredGigE 1/0/3 and HundredGigE 1/0/5 on Switch C have become static member ports of IPv6 multicast group FF1E::101.