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PIM-SM admin-scope zone configuration example
Network requirements
As shown in Figure 55, receivers receive VOD information through multicast. The entire PIM-SM domain
is divided into admin-scope zone 1, admin-scope zone 2, and the global zone. Switch B, Switch C, and
Switch D are ZBRs of these three domains respectively.
Source 1 and Source 2 send different multicast informa t i o n t o m u l t i c a s t g r o u p 239.1.1.1. H o s t A r e c e i v e s
the multicast information only from Source 1, and Host B receives the multicast information only from
Source 2. Source 3 sends multicast information to multicast group 224.1.1.1. Host C is a multicast receiver
for this multicast group.
VLAN-interface 101 of Switch B acts as a C-BSR and C-RP of admin-scope zone 1, which provides
services for the multicast group range 239.0.0.0/8. VLAN-interface 104 of Switch D acts as a C-BSR and
C-RP of admin-scope zone 2, which also provides services for the multicast group range 239.0.0.0/8.
VLAN-interface 109 of Switch F acts as C-BSRs and C-RPs of the global scope zone, which provides
services for all the multicast groups other than those in the 239.0.0.0/8 range.
IGMPv2 runs between Switch A, Switch E, Switch I, and their respective receivers.
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