리눅스 - Scope, DHCP Relay Agent, Reservation

# mount /dev/hdc /cdrom

# cd /cdrom/CentOS
# rpm -ivh dhcp-3? (tap)
# rpm -ivh dhcp-devel(tap)

# vi /etc/sysconfig/dhcrelay
DHCPSERVER=”192.168.20.1”

# service dhcrelay restart

# df (-h)
# umount “/run/media/root/CentOS 7 x86)64” ← 안 해도 상관 없음.

# mkdir /cdrom
# mount /dev/sr0 /cdrom

# cd /etc/yum.repos.d
# mv *.repo /tmp/

# vi /etc/yum.repos.d/local.repo
[LocalRepo]
baseurl=file:///cdrom 
gpgcheck=0

# yum clean all

# vi /etc/fstab
/dev/sr0 /cdrom iso 9660 defaults 1 2

# mount /dev/sr0 /cdrom

# yum -y install dhcp*

# cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example t 2./etc/dhcp/dhcpd.conf

# vi/etc/dhcp/dhcpd.conf
-필수-
default-lease-time 6000;
max-lease-time 72000;
subnet 172.19.0.0 netmask 255.255.0.0 {
range 172.19.0.1 172.19.10.253;
option routers 172.19.0.254;
option broadcast-address 172.19.255.255.;
option subnet-mask 255.255.0.0;
option domain-name-servers 8.8.8.8;
}
-나머진 전부 주석 처리 하기-

# systemctl restart dhcpd
# systemctl enable dhcpd

# firewall-cmd —zone=public —add-service=dhcp —permanent
or
# service firewalld stop

# vi /var/lib/dhcpd/dhcpd.lease

# ifdown
# ifup
# ifconfig
“IP주소 할당 확인”