Linux dual-line IP settings (no additional routing table required)

Linux dual-line IP settings (no additional routing table required, just modify the following OK)
Modify
Vi/etc/iproute2/rt_tables
(Increase the number of telecom and netcom two routing tables)

Increase
252 Tel (Telecom)
251 CNC (netcom)
(Set up telecom and Netcom routing table contents)

Vi/etc/rc.d/rc.local
Increase

IP route replace the default via Telecom Gateway Dev eth0 (routing line)

IP Route Flush Table Tel (Refresh Tel routing table)
IP route add default via telecom Gateway DEV eth0 src Telco IP Table Tel (add source routing address)
IP rule add from Telco IP table Tel (coming from telco IP, go tel route)

IP route flush Table CNC
IP route add default via unicom Gateway dev eth1 src unicom ip table cnc
IP rule add from unicom IP table CNC (from the Netcom IP, go netcom)

Save exit

Restart the server to get it done.