Multicast
H3C Low-End Ethernet Switches Configuration Examples
Chapter 2 Multicast Protocol Configuration
Examples
2-8
After multicast group filtering is enabled, the corresponding port cannot receive IGMP
reports. Thus, the corresponding multicast groups are deleted after the port aging timer
expires.
Note:
As shown above, IGMP Snooping multicast group filtering has the same function as
IGMP multicast group filtering. You can use either approach based on the specific
situation.
2.2 PIM-SM plus IGMP plus IGMP Snooping Configuration
Examples
2.2.1 Requirement Analysis
When users receive VOD information through multicast, the information receiving
mode may vary based on user requirements:
1) To avoid broadcasting of the video information at Layer 2, IGMP Snooping is
enabled on Switch E, through which Host A and Host B receive the multicast data.
2) To ensure reliable and stable reception of multicast data, Switch B and Switch C
provide uplink backup for the directly attached stub network N1, which comprises
multicast receivers Host C and Host D.
3) Configure the PIM-SM domain as a single-BSR domain. Run OSPF for unicast
routing in the domain.
2.2.2 Configuration Plan
1) Switch D connects to the network that comprises the multicast source (Source)
through VLAN-interface 300.
2)
Switch A connects to Switch F through VLAN-interface 100, and to Switch D and
Switch E through VLAN-interface 101 and VLAN-interface 102 respectively.
3) Switch B and Switch C connect to stub network N1 through their respective
VLAN-interface 200, and to Switch E through VLAN-interface 103 and
VLAN-interface 104 respectively.
4) It is required that VLAN-interface 105 of Switch D and VLAN-interface 102 of
Switch E act as C-BSR and C-RP.
5) IGMPv2 is required on VLAN-interface 100 of Switch A. IGMP Snooping is
required on Switch F and in VLAN 100. IGMPv2 is also required between Switch B,
Switch C, and stub network N1. Typically, Switch B acts as the querier.