From a Cisco standpoint, the best way to implement role-based addressing is to have it mapped to the corporate structure or to the roles of the servers or end-user stations. Using an example based on the 10.0.0.0/8 network, consider the first octet to be the major network number, the second octet to be the number assigned to the closet (i.e., the server room or wiring closets throughout the organization), the third octet to be the VLAN numbers, and the last octet to be the number of hosts. An address of 10.X.Y . . .
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