linux双网卡配置

首先查看机器是否是双网卡:

lspci | grep -i ether

配置步骤：

1. 修改network：

   vi /etc/sysconfig/network​

   NETWORKING=yes
   HOSTNAME=thingsboard	
   GATEWAY=192.168.10.1  	#外网网关​

2. 第一个网卡配置：

   cat /etc/sysconfig/network-scripts/ifcfg-em1​

   UID=b42b61a7-0a88-4809-b596-b13bf802b813
   TYPE="Ethernet"
   BOOTPROTO="static"
   DEVICE="em1"
   ONBOOT="yes"
   HWADDR=d0:94:66:80:f0:3c
   IPADDR=192.168.10.100
   NETMASK=255.255.255.0
   GATEWAY=192.168.10.1
   DNS1=211.137.186.224
   DNS2=8.8.8.8

3. 第二个网卡配置：

   cat /etc/sysconfig/network-scripts/ifcfg-em2​

   UUID=92327720-60de-4603-a77b-2a84459f0198
   TYPE="Ethernet"
   BOOTPROTO="static"
   DEVICE="em2"
   ONBOOT="yes"
   IPADDR=192.168.1.189
   NETMASK=255.255.255.0

4. 路由设置：

   ip route flush table table1
   ip route add default via 192.168.1.1 dev em1 src 192.168.1.100 table table1
   ip rule add from 192.168.1.100 table table1
   ip route flush table table2
   ip route add default via 192.168.1.1 dev em2 src 192.168.1.253 table table2
   ip rule add from 192.168.1.253 table table2​

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