DHCP components and configuration
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Bootstrap Protocol(BOOTP) | network protocol that passes requests send from a disk-less workstation to a server node
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Dynamic Host Configuration Protocol (DHCP) | Service that allocates IP addresses on an as needed bases.
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DHCP Options | items in addition to IP and subnet that can be added to client systems like default gateways and DNS addresses
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DHCP Scope | a range of IP addresses for a subnet
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DHCP Reservation | an IP address that is assigned by DHCP but stays the same, permanently or until changed by an administrative task
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DHCP Lease | length of time a host uses an IP address
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dhcpd.conf | file located in /etc that contains DHCP configuration option
changes made here will not take effect until the DAEMON is restarted
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dhcpd.conf Paramaters | commands that state how to perform a task
enclosed in {}
AKA options
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dhcpd.conf "shared-network" | declaration used on network containing multiple subnets
'shared-network shared (networkname) {[parameter] [declaration]}
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dhcpd.conf "subnet" | used to define subnet on a network
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dhcpd.conf "range" | specifies the range of IP addresses in a subnet
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dhcpd.conf "fixed-address" | Specifies static IP assigned by DHCP
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dhcpd | daemon that controls the DHCP functions
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dhcpd -p (port) | allows DHCP to listen on another port than 67
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dhcpd -f | run dhcpd as a foreground process (background by default)
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dhcpd -d | allows dhcpd to log activities
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dhcpd -t | -T | tests dhcpd.conf for proper syntax without applying changes
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dhcpd -cf (config file) | allows use of alternate config file to dhcpd.conf
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dhcpd -lf (lease-file) | allows for use of alternate lease config file
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dhcpd.leases | leae database file
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