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. RFCs 2131 and 2132 define DHCP as an Internet Engineering Task Force (IETF) standard based on Bootstrap Protocol (BOOTP), a protocol with which DHCP shares many implementation details. DHCP allows hosts to obtain necessary TCP/IP configuration information from a DHCP server.
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DHCP is a method by which a router will automatically assign IP addresses to computers connected to it, rather than each of them having to manually specify an IP address (and ensure that their chosen IP doesn't conflict with any other on the network)
DHCP allows a computer to receive an IP address dynamically whenever it connects to the network. This is as opposed to a static IP address, which must be manually specified on bot the router and the operating system.
Dynamic Host Configuration Protocol(DHCP) Server is used to distribute IP in the network automatically from the range specified in the DHCP Server while creating scope.
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The purpose is to assign IP addresses to machines as they're connected to the network, and to inform the connected machines as to other core network parameters such as netmask, default gateway, and DNS servers.
DHCP is a client / server protocol designed to provide four pieces of information. DHCP is a successor to BootP and RARP . Dynamic host configuration protocol is backward compatible with BootP.
dhcp give to other computer the ip address automatically.
A DHCP (Dynamic Host Configuration Protocol) server assigns IP addresses to hosts (computers) on a network when they first access the network.
DHCP is responsible for IP addresses for requesting clients.
The ISR router acts as both a DHCP client and server.
The role refers to the service or services that the server is providing, such as DHCP, DNS, HTTP, etc.
WIndows and non-Windows systems install DHCP in different ways, but the basic idea is the same group of steps:Add the DHCP service role to the systemActivate the serviceAdd the scope of IP addresses and exclusions to the DHCP serviceActivate the scopeOff you go - addresses!
Using routing and remote access server role
After installing the DHCP role, you configure a scope by giving it an IP address range, possible exclusions, and any scope options to be given out to clients. Then, you activate the scope, and you are done.
DHCP has to be configured by using the DHCP snap-in MMC console. This is under the Administrative Tools once DHCP has been installed. In Windows Server 2008 you add the Role, so it isn't installed via the Control Panel at all. For configuring the scope, you need to specify the address ranges to give out, any exclusions, and scope options for default gateway, etc.
The port 67 and port 68 are used by DHCP and the DHCP clients.
, the DHCP relay agent is now available under the Network Policy Server. When installing this role, select a role service "Routing and Remote Access" to be installed. The rest is the same like in Windows Server 2003 - just configure it using RRAS administrative console.
dhcp has to be authorized
The use of a DHCP relay agent is an agent that relays DHCP between DHCP clients and DHCP servers on different IP networks. The DHCP relay agent is compliant with RFC 1542.
router (config)# ip dhcp servicerouter (dhcp-config)# ip dhcp pool router (dhcp-config)# network
(DHCP) Dynamic host Configuration Protocol. The Default Port Number is: for DHCP client : 546 for DHCP server : 547