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The multicast address space has a block of addresses assigned
that are analogous to the private IP unicast address blocks. The
block of Class D addresses from 239.0.0.0 to 239.255.255.255 are
referred to as administratively scoped; the block is further
subdivided, as shown in Table 9-1. Assume that in your company each
department (finance, engineering, and marketing) wants to deploy
multicasting, but they do not want to receive multicast traffic from
the other departments. For this scenario, a multicast boundary will
need to be set up around each department to prevent multicast
traffic from crossing departmental boundaries (see Figure
9-2). |
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