DHCP中继配置

[root@localhost ~]# ip a                                                                                           //查看网卡状态
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000      //1网卡
    link/ether 00:0c:29:20:7a:28 brd ff:ff:ff:ff:ff:ff
    inet 192.168.200.112/24 brd 192.168.200.255 scope global noprefixroute ens32
       valid_lft forever preferred_lft forever
    inet6 fe80::d0a7:d46b:7c9e:f256/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: ens34: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000   //2网卡
    link/ether 00:0c:29:20:7a:32 brd ff:ff:ff:ff:ff:ff
    inet 192.168.200.10/24 brd 192.168.200.255 scope global noprefixroute dynamic ens34
       valid_lft 569sec preferred_lft 569sec
    inet6 fe80::8699:6ca3:1e2c:1083/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:80:40:b0 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:80:40:b0 brd ff:ff:ff:ff:ff:ff                         
[root@localhost ~]# cp /etc/sysconfig/network-scripts/ifcfg-ens32 /etc/sysconfig/network-scripts/ifcfg-ens34   //创建2网卡文件
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens34   //修改2网卡文件
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens34
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens34
DEVICE=ens34
ONBOOT=yes
IPADDR=192.168.100.111
NETMASK=255.255.255.0
GATEWAY=192.168.100.1
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens32     //1网卡
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens32
DEVICE=ens32
ONBOOT=yes
IPADDR=192.168.200.112
NETMASK=255.255.255.0
GATEWAY=192.168.200.1
===============================================
[root@localhost ~]# scp 192.168.200.111:/etc/dhcp/dhcpd.conf /etc/dhcp/dhcpd.conf    
root@192.168.200.111's password:
dhcpd.conf                                                                                                                                       100%  251   184.9KB/s   00:00   
[root@localhost ~]# vim /etc/dhcp/dhcpd.conf
[root@localhost ~]# cat /etc/dhcp/dhcpd.conf
option domain-name "example.org";
option domain-name-servers 202.106.0.20,8.8.8.8;

default-lease-time 600;
max-lease-time 7200;

subnet 192.168.200.0 netmask 255.255.255.0 {
  range 192.168.200.10 192.168.200.40;
  option routers 192.168.200.1;
}

subnet 192.168.100.0 netmask 255.255.255.0 {
  range 192.168.100.10 192.168.100.40;
  option routers 192.168.100.1;
}

[root@localhost ~]#