What is DHCP user class?

A DHCP client class is a widely used mechanism for differentiating and classifying devices on your network based on specific configuration criteria. This classification allows you to assign DHCP addresses or options based on specific device characteristics or a network identifier.

What information DHCP provides?

Dynamic Host Configuration Protocol (DHCP) is a client/server protocol that automatically provides an Internet Protocol (IP) host with its IP address and other related configuration information such as the subnet mask and default gateway.

What are the 4 steps followed by a DHCP client to obtain an IP address?

DHCP operations fall into four phases: server discovery, IP lease offer, IP lease request, and IP lease acknowledgement. These stages are often abbreviated as DORA for discovery, offer, request, and acknowledgement.

What is a DHCP vendor class?

Using the vendor class identifier allows DHCP administrators to assign vendor-specific DHCP options to devices without running the risk of duplicating options within the DHCP scope. For example, it allows an organization to supply separate DHCP option 43 values to different vendor devices.

What does vendor class mean?

Vendor classes are used for assigning vendor-specific options to a group of clients identified as sharing a commonly defined vendor type. An example of each would be the following: ■ Users classes can define groups such as laptop users, desktop users, or servers.

Which DHCP messages do clients typically send?

The client sends a DHCPREQUEST message to all servers with the IP address of the chosen DHCP server.

How does a client receive an address from a DHCP server?

After the DHCP servers determine the client’s network, the servers select an appropriate IP address and verify that the address is not already in use. The DHCP servers then respond to the client by broadcasting an offer message.

How does a DHCP client get an IP address?

Figure 1: DHCP Request for an IP Address from a DHCP Server The client returns a formal request for the offered IP address to the DHCP server in a DHCPREQUEST broadcast message. The DHCP server confirms that the IP address has been allocated to the client by returning a DHCPACK unicast message to the client.