ubuntu 14.04 configure 3-wire 3IP

1、3 Line 3 IP server interface IP address (vlan interface)

em1.12 Single Unicom: 120.52.139.9 Mask: 255.255.255.240 Gateway: 120.52.139.1

em1.13 Single Telecom: 123.58.236.26 Mask: 255.255.255.248 Gateway: 123.58.236.25

em1.16 Single mobile: 223.71.150.91 Mask: 255.255.255.248 Gateway: 223.71.150.89

2、 Configure routing table labels

test@ubuntu:~$  cat /etc/iproute2/rt_tables

reserved values

255 local

254 main

253 default

0 unspec

#( (Add the following Unicom, Telecom, Mobile routing tags)

252 cnc

251 ct

250 yd

3、 Configure routing table and routing strategy

sudo ip route add table cnc  via 120.52.139.1 dev em1.12 src  120.52.139.9

sudo ip rule add from  120.52.139.9 table cnc

sudo ip route add table ct  via 123.58.236.25 dev em1.13 src  123.58.236.26

sudo ip rule add from  123.58.236.26 table ct

sudo ip route add table yd  via 223.71.150.89 dev em1.16 src  223.71.150.91

sudo ip rule add from  223.71.150.91 table yd

4、 Write routing table and routing strategy to start automatically

test@ubuntu:~$ sudo cat /etc/rc.local

#! /bin/sh -e

rc.local

This script is executed at the end of each multiuser runlevel.

Make sure that the script will "exit 0" on success or any other

value on error.

In order to enable or disable this script just change the execution

bits.

By default this script does nothing.

sudo ip route add table cnc  via 120.52.139.1 dev em1.12 src  120.52.139.9

sudo ip rule add from  120.52.139.9 table cnc

sudo ip route add table ct  via 123.58.236.25 dev em1.13 src  123.58.236.26

sudo ip rule add from  123.58.236.26 table ct

sudo ip route add table yd  via 223.71.150.89 dev em1.16 src  223.71.150.91

sudo ip rule add from  223.71.150.91 table yd