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Dynamic Host Configuration Protocol which in short is DHCP server. With using DHCP providing inside hosts with valid Internet IP addresses, the DHCP server usually provides IP addresses from a private pool of addresses. The problem is that these hosts may still require valid IP addresses to access Internet resources and this is where Network Address Translation (NAT) comes in.
DHCP every device that connects to a network needs an IP address. Network administrators manually assign static IP addresses to routers, servers, and other network devices whose location (physical and logical) are not likely to change. These static addresses also enable administrators to manage those devices remotely. Desktop and laptop computers often change physical locations with an organization. Administrators attempting to provide manual IP address assignment for these hosts would be faced with the monumental task of readdressing the host every time an employee moves to a different office or cubicle. DHCP is an extremely useful and time saving tool for network administrators.
DHCP Operation provides IP addresses to clients are the most fundamental task performed by a DHCP server. DHCP includes three different address allocation mechanisms to provide flexibility when assigning IP addresses:
1. Manual Allocation: The administrator assigns a preallocated IP address to the client, and DHCP only communicates the IP address to the device.
2. Automatic allocation: DHCP automatically assigns a static IP address permanently to a device, selecting it from a pool of available addresses. There is no lease, and the address is permanently assigned to a device.
3. Dynamic allocation: DHCP automatically dynamically assigns, or leases, an IP address from a pool of addresses for a limited period of time chosen by the server, or until the client tells the DHCP server that it no longer needs the address.
DHCP when the client boots or otherwise wants to join a network, it...
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