Thursday, 25 December 2014

DHCP Relay Agent in RHEL 6


DHCP Relay Agent in RHEL 6 

What is DHCP Relay Agent ?


A DHCP relay agent is any host that forwards DHCP packets between clients and servers. Relay agents are used to forward requests and replies between clients and servers when they are not on the same physical subnet. Relay agent forwarding is distinct from the normal forwarding of an IP router, where IP datagrams are switched between networks somewhat transparently. By contrast, relay agents receive DHCP messages and then generate a new DHCP message to send out on another interface.

Monday, 15 December 2014

DHCP Server configuration in RHEL 6

How to configure DHCP Server in RHEL 5

What is DHCP ?


Dynamic Host Configuration Protocol (DHCP) is a network protocol that enables a server to automatically assign an IP address to a computer from a defined range of numbers (i.e., a scope) configured for a given network.

DHCP (Dynamic Host Configuration Protocol) is a communications that lets network administrators centrally manage and automate the assignment of Internet Protocol IP addresses in an organization's network. Using the Internet Protocol, each machine that can connect to the Internet needs a unique IP address, which is assigned when an Internet connection is created for a specific computer. Without DHCP, the IP address must be entered manually at each computer in an organization and a new IP address must be entered each time a computer moves to a new location on the network. DHCP lets a network administrator supervise and distribute IP addresses from a central point and automatically sends a new IP address when a computer is plugged into a different place in the network.