H3C LS-3100-52P-OVS-H3 Operation Manual page 963

Figure 1-7 Relationship between admin-scope zones and the global scope zone in geographic space
Admin-scope zones are geographically separated from one another. Namely, a router must not serve
different admin-scope zones. In other words, different admin-scope zones contain different routers,
whereas the global scope zone covers all routers in the PIM-SM domain.
In terms of multicast group address ranges
Each admin-scope zone serves specific multicast groups. Usually, these addresses have no
intersections; however, they may overlap one another.
Figure 1-8 Relationship between admin-scope zones and the global scope zone in group address
ranges
In Figure 1-8, the group address ranges of admin-scope 1 and 2 have no intersection, whereas the
group address range of admin-scope 3 is a subset of the address range of admin-scope 1. The group
address range of the global scope zone covers all the group addresses other than those of all the
admin-scope zones. That is, the group address range of the global scope zone is G-G1-G2. In other
words, there is a supplementary relationship between the global scope zone and all the admin-scope
zones in terms of group address ranges.
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