111
•
Receivers receive VOD information through multicast.
•
Receivers of different organizations form stub networks N1 and N2, and Host A and Host C are
receivers in N1 and N2, respectively.
•
Switch A in the PIM network connects to N1, and both Switch B and Switch C connect to N2.
•
IGMPv2 runs Switch A and N1, and between the other two switches and N2. Switch B acts as
the IGMP querier in N2 because it has a lower IP address.
Configure the switches so that the receivers in N1 can join only multicast group 224.1.1.1, and the
receivers in N2 can join any multicast groups.
Figure 37 Network diagram
Configuration procedure
1.
Assign an IP address and subnet mask to each interface according to
. (Details not
shown.)
2.
Configure OSPF protocol on the switches in the PIM network to meet the following
requirements: (Details not shown.)
{
The switches are interoperable at the network layer.
{
The switches can dynamically update their routing information.
3.
Enable IP multicast routing, IGMP and PIM-DM:
# On Switch A, enable IP multicast routing, enable IGMP on VLAN-interface 100, and enable
PIM-DM on each interface.
<SwitchA> system-view
[SwitchA] multicast routing-enable
[SwitchA] interface vlan-interface 100
[SwitchA-Vlan-interface100] igmp enable
[SwitchA-Vlan-interface100] pim dm
[SwitchA-Vlan-interface100] quit
[SwitchA] interface vlan-interface 101
[SwitchA-Vlan-interface101] pim dm
[SwitchA-Vlan-interface101] quit