SLES 15
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Configure DHCP Server
2019/01/17
 
Configure DHCP ( Dynamic Host Configuration Protocol ) Server.
[1] Install and configure DHCP Server.
dlp:~ #
zypper -n install dhcp-server
dlp:~ #
vi /etc/sysconfig/dhcpd
# line 15: specify intarface to listen DHCPD

DHCPD_INTERFACE="
eth0
"
dlp:~ #
mv /etc/dhcpd.conf /etc/dhcpd.conf.org

dlp:~ #
vi /etc/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 subnet mask
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 default gateway
    option routers 10.0.0.1;
} 

dlp:~ #
systemctl start dhcpd

dlp:~ #
systemctl enable dhcpd

[2] If Firewalld is running, allow DHCP service. DHCP uses 67/UDP.
dlp:~ #
firewall-cmd --add-service=dhcp --permanent

success
dlp:~ #
firewall-cmd --reload

success
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