Determine the Number of Subnets
To determine the number of subnets required, the engineer must think about the internetwork as documented and apply the following rules. To do so, the engineer requires access to network diagrams, VLAN configuration details, and if you use Frame Relay WANs, details about the permanent virtual circuits (PVC). Based on this info, you should use these rules and plan for one subnet for every
VLAN
Point-to-point serial ...
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