Linux Routing Configuration

External

• https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/sec-Using_the_Command_Line_Interface.html#sec-Configuring_Static_Routes_in_ifcfg_files

Internal

• Routing

Adding Multicast Routing to a Specific Network Interface

ip route add 224.0.0.0/4 dev <device-name>

More details about ip can be found here

ip

The equivalent "route" command is:

route add 224.0.0.0 netmask 240.0.0.0 dev <device-name>

Routing Configuration that Survives Reboot

Add the routing configuration to /etc/sysconfig/network-scripts/route-<device-name>:

# default route
default via 192.168.1.1 dev <device-name>

# default multicast route
224.0.0.0/4 via dev <device-name>

224.0.0.0/4 dev eth1 scope link