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What information can a DHCP server provides to a host?
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 does a DHCP server do?
A DHCP Server is a network server that automatically provides and assigns IP addresses, default gateways and other network parameters to client devices. It relies on the standard protocol known as Dynamic Host Configuration Protocol or DHCP to respond to broadcast queries by clients.
How clients are getting IP from DHCP server?
The client discovers a DHCP server by broadcasting a discover message to the limited broadcast address (255.255. 255.255) on the local subnet. If a router is present and configured to behave as a BOOTP relay agent, the request is passed to other DHCP servers on different subnets.
How does a DHCP client obtain an IP configuration?
Learn how DHCP clients obtain an IP configuration from a DHCP server through four DHCP communication steps. When a host (DHCP client) needs an IP configuration, it connects to a DHCP server and requests for an IP configuration. A DHCP server contains several pre-configured IP configurations.
What happens if the DHCP server is not available?
The DHCP client now locally saves all of the data that was received and connects to the network. If the server is no longer available or the IP has been assigned to another client during the configuration process, it responds with DHCPNAK ( DHCP not acknowledged ).
How does a vendor specific DHCP server work?
Vendor specific DHCP options: One or more vendor specific DHCP options to send to the client based on the vendor class field in the client request. The DHCP server evaluates policies sequentially according to an assigned processing order. The DHCP administrator assigns the processing order to the policies.
How are DHCP policies defined at the server level?
If there are no policies defined at the scope level, the policies at the server level apply to the scope. The DHCP server determines the scope to which a DHCP client belongs based on the gateway IP address of the relay agent or the interface of the DHCP server on which it receives the DHCP client packet.