本地路由转发

通过路由转发，实现从一个固定IP访问到另一个固定IP

配置命令

nmcli con mod eth0 +ipv4.routes "10.254.254.11 192.168.7.61"
nmcli con mod eth0 +ipv4.routes "10.254.254.12 192.168.7.62"
nmcli con mod eth0 +ipv4.routes "10.254.254.13 192.168.7.63"

实际生效区域

# cat /etc/sysconfig/network-scripts/route-eth0
ADDRESS0=10.254.254.11
NETMASK0=255.255.255.255
GATEWAY0=192.168.7.61
ADDRESS1=10.254.254.12
NETMASK1=255.255.255.255
GATEWAY1=192.168.7.62
ADDRESS2=10.254.254.13
NETMASK2=255.255.255.255
GATEWAY2=192.168.7.63

重新加载配置文件

nmcli networking off;nmcli networking on

#或
nmcli connection reload
nmcli connection down eth0; nmcli connection up eth0

#注意：远程时需要在一行命令里同时down与up网卡，否则网卡下线即断网。

此时查看发现

# route -n
Kernel IP routing table
Destination   Gateway      Genmask         Flags Metric Ref Use Iface
0.0.0.0       192.168.7.1  0.0.0.0         UG    100    0   0   eth0
10.254.254.11 192.168.7.61 255.255.255.255 UGH   100    0   0   eth0
10.254.254.12 192.168.7.62 255.255.255.255 UGH   100    0   0   eth0
10.254.254.13 192.168.7.63 255.255.255.255 UGH   100    0   0   eth0
192.168.7.0   0.0.0.0      255.255.255.0   U     100    0   0   eth0