DHCP : Configure DHCP Server2021/02/24 |
Configure DHCP ( Dynamic Host Configuration Protocol ) Server to assign IP addresses to client hosts in local network.
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[1] | Install and Configure DHCP. On this example, it shows only for IPv4 configuration. |
[root@dlp ~]#
dnf -y install dhcp-server
[root@dlp ~]#
vi /etc/dhcp/dhcpd.conf # create new # specify domain name option domain-name "srv.world"; # specify DNS server's hostname or IP address option domain-name-servers dlp.srv.world; # default lease time default-lease-time 600; # max lease time max-lease-time 7200; # this DHCP server to be declared valid authoritative; # specify network address and subnetmask subnet 10.0.0.0 netmask 255.255.255.0 { # specify the range of lease IP address range dynamic-bootp 10.0.0.200 10.0.0.254; # specify broadcast address option broadcast-address 10.0.0.255; # specify gateway option routers 10.0.0.1; } systemctl enable --now dhcpd |
[2] | If Firewalld is running, allow DHCP service. DHCP Server uses [67/UDP]. |
[root@dlp ~]# firewall-cmd --add-service=dhcp --permanent success [root@dlp ~]# firewall-cmd --reload success |
[3] | It's possible to see leased IP address in the file below from DHCP Server to DHCP Clients. |
[root@dlp ~]# ll /var/lib/dhcpd total 36 -rw-r--r-- 1 dhcpd dhcpd 0 Jun 3 2020 dhcpd6.leases -rw-r--r-- 1 dhcpd dhcpd 15847 Feb 24 11:36 dhcpd.leases -rw-r--r-- 1 dhcpd dhcpd 17227 Feb 24 11:01 dhcpd.leases~[root@dlp ~]# cat /var/lib/dhcpd/dhcpd.leases # The format of this file is documented in the dhcpd.leases(5) manual page. # This lease file was written by isc-dhcp-4.3.6 # authoring-byte-order entry is generated, DO NOT DELETE authoring-byte-order little-endian; lease 10.0.0.218 { starts 3 2021/02/05 05:47:54; ends 3 2021/02/05 05:57:54; cltt 3 2021/02/05 05:47:54; binding state active; next binding state free; rewind binding state free; hardware ethernet 52:54:00:a1:d5:6e; uid "\377+\2244\301\000\002\000\000\253\021\011\215\353J2\\\322\272"; client-hostname "dlp"; } ..... ..... |