[EhostICT] CentOS 7 C 클래스 IP 대역 전체 설정

CentOS 7에서 C 클래스 전체 설정

 

1. networkmanager stop 및 disble

[root@EhostICT backup]# systemctl stop  NetworkManager

[root@EhostICT backup]# systemctl disable  NetworkManager

 

2. network 서비스 enable 및 등록

[root@EhostICT backup]# chkconfig --add network
[root@EhostICT backup]# chkconfig --levels 345 network on

 

 

3.  ip 대역 등록

[root@EhostICT ~]# vi /etc/sysconfig/network-scripts/ifcfg-em1-range0   
DEVICE=em1
ONBOOT=yes
BOOTPROTO=static
IPADDR_START=192.168.9.3  (시작 IP)
IPADDR_END=192.168.9.254 (종료 IP)
CLONENUM_START=3   ( em1:3 부터 시작)
NETMASK=255.255.255.0
NO_ALIASROUTING=yes

 

4. network 서비스 재시작

 [root@EhostICT backup]# systemctl restart network

  

5. 결과

   a. IP 개당  4초 정도 up

 

em1:148: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.9.148  netmask 255.255.255.0  broadcast 192.168.9.255
        ether 00:a0:d1:eb:68:74  txqueuelen 1000  (Ethernet)
        device memory 0xfbde0000-fbdfffff 

em1:149: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.9.149  netmask 255.255.255.0  broadcast 192.168.9.255
        ether 00:a0:d1:eb:68:74  txqueuelen 1000  (Ethernet)
        device memory 0xfbde0000-fbdfffff 

em1:150: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.9.150  netmask 255.255.255.0  broadcast 192.168.9.255
        ether 00:a0:d1:eb:68:74  txqueuelen 1000  (Ethernet)
        device memory 0xfbde0000-fbdfffff 

em1:151: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.9.151  netmask 255.255.255.0  broadcast 192.168.9.255
        ether 00:a0:d1:eb:68:74  txqueuelen 1000  (Ethernet)
        device memory 0xfbde0000-fbdfffff