Vendor and user classes

Vendor classes enable you to define a set of DHCP settings for a specific equipment vendor and apply those settings to any node falling into that class. User classes enable you to do much the same thing, defining DHCP settings to apply to a specific group of nodes. Vendor and user classes offer enhanced flexibility in assigning custom settings to individual nodes or groups of nodes without affecting others on the same network. Through a vendor or user class, a node can request a custom set of DHCP settings to suit its configuration. For example, you might assign shorter lease durations to notebook PCs because they leave the network more frequently. You define a user class called Notebook and assign to it a shorter lease period; the client, which presents the user class to the server, receives the shorter lease based on that user class.

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