原文鏈接：https://blog.csdn.net/u012758088/article/details/76255543
Source IP
根據來源端IP來決定數據包參考哪個路由表發送出去。以下兩個示例分別指出，如果數據包的來源端IP是192.168.1.10，就參考路由表10；如果來源端IP為192.168.2.0/24網段的IP，就參考路由表20
1 ip rule add from 192.168.1.10 table 10 2 ip rule add from 192.168.2.0/24 table 20
Destination IP
根據目的端IP來決定數據包參考哪個路由表發送出去。以下兩個示例分別指出，如果數據包的目的端IP是168.95.1.1，就參考路由表10；如果目的端IP是168.95.0.0/24網段的IP，就參考路由表20
1 ip rule add to 168.95.1.1 table 10 2 ip rule add to 168.96.0.0/24 table 20
ip rule show命令所顯示內容的第一個字段就是優先級別，數字越小，代表優先級別越高，也代表這條規則可以排得越靠前
1 [root@localhost ~]# ip rule show 2 0: from all lookup local 3 32766: from all lookup main 4 32767: from all lookup default 5 [root@localhost ~]# ip rule add from 192.168.1.0/24 table 1 prio 10 6 [root@localhost ~]# ip rule add from 192.168.2.0/24 table 2 prio 20 7 [root@localhost ~]# ip rule show 8 0: from all lookup local 9 10: from 192.168.1.0/24 lookup 1 10 20: from 192.168.2.0/24 lookup 2 11 32766: from all lookup main 12 32767: from all lookup default
刪除規則
1 ip rule del prio 10 2 ip rule del from 192.168.1.0/24 3 ip rule del table 1 4 ip rule del from 192.168.1.0/24 table 1 prio 10
添加路由
1 [root@localhost ~]# ip route add 192.168.1.0/24 dev eth1 table 10 2 [root@localhost ~]# ip route add default via 192.168.1.254 table 10 3 [root@localhost ~]# 4 [root@localhost ~]# ip route show table 10 5 192.168.1.0/24 dev eth1 scope link 6 default via 192.168.1.254 dev eth1
刪除路由表
1 [root@localhost ~]# ip route show table 10 2 192.168.1.0/24 dev virbr0 scope link 3 default via 192.168.1.254 dev eth1 4 [root@localhost ~]# 5 [root@localhost ~]# ip route del default table 10 6 [root@localhost ~]# 7 [root@localhost ~]# ip route show table 10 8 192.168.1.0/24 dev virbr0 scope link 9 [root@localhost ~]# 10 [root@localhost ~]# ip route del 192.168.1.0/24 table 10 11 [root@localhost ~]# 12 [root@localhost ~]# ip route show table 10