On Tue, 24 Nov 2015 15:13:33 +0800 Siva Prasad Nath wrote: > I can add using ifconfig and route. > Then I can see kernel route entry table. > I reboot system. Then route table is empty. > > How to make kernel route entry table permanent. Create a file in /etc/sysconfig/network-scripts named route-(ifname) See section 2.4.4 of the RHEL 7 networking guide here for complete details: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/sec-Using_the_Command_Line_Interface.html#sec-Static-Routes_and_the_Default_Gateway -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com