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Host A and Host C are multicast receivers in two stub networks.
VLAN-interface 105 on Switch D and VLAN-interface 102 on Switch E act as C-BSRs and C-RPs. The
C-BSR on Switch E has a higher priority. The multicast group range to which the C-RP is designated is
225.1.1.0/24. Modify the hash mask length to map a certain number of consecutive group addresses
within the range to the two C-RPs.
IGMPv2 runs between Switch A and N1 and between Switch B/Switch C and N2.
Figure 54 Network diagram
Device Interface IP address Device Interface IP address
Switch A Vlan-int100 10.110.1.1/24 Switch D Vlan-int300 10.110.5.1/24
Vlan-int101 192.168.1.1/24 Vlan-int101 192.168.1.2/24
Vlan-int102 192.168.9.1/24 Vlan-int105 192.168.4.2/24
Switch B Vlan-int200 10.110.2.1/24 Switch E Vlan-int104 192.168.3.2/24
Vlan-int103 192.168.2.1/24 Vlan-int103 192.168.2.2/24
Switch C Vlan-int200 10.110.2.2/24 Vlan-int102 192.168.9.2/24
Vlan-int104 192.168.3.1/24 Vlan-int105 192.168.4.1/24
Configuration procedure
1. Configure the IP address and subnet mask for each interface as per Figure 54. (Details not shown.)
2. Configure OSPF on the switches in the PIM-SM domain to make sure they are interoperable at the
network layer. (Details not shown.)
3. Enable IP multicast routing, IGMP and PIM-SM:
Ethernet
EthernetEthernet
N1N2
Vlan-i
n
t101
Vlan-int1
0
1