DHCP : Configure DHCP Server2022/05/19 |
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 success [root@dlp ~]# firewall-cmd --runtime-to-permanent 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 4 -rw-r--r--. 1 dhcpd dhcpd 0 Apr 13 23:21 dhcpd6.leases -rw-r--r--. 1 dhcpd dhcpd 274 May 19 16:37 dhcpd.leases -rw-r--r--. 1 dhcpd dhcpd 0 Apr 13 23:21 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-4.4.3 # authoring-byte-order entry is generated, DO NOT DELETE authoring-byte-order little-endian; server-duid "\000\001\000\001*\030\2605RT\000\022?>"; lease 10.0.0.233 { starts 4 2022/05/19 07:40:43; ends 4 2022/05/19 07:50:43; cltt 4 2022/05/19 07:40:43; binding state active; next binding state free; rewind binding state free; hardware ethernet 00:0c:29:f3:7b:12; uid "\001\000\014)\363{\022"; set vendor-class-identifier = "MSFT 5.0"; client-hostname "RX-78"; } ..... ..... |
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