Monday, October 8, 2012

Static route

The routing table for the system is display with the ip route show command.

Routing must be enabled with a tunable kernel parameter, named net.ipv4.ip_forward

- 0 = discard foreign packet
- 1 = forward foreign packets to the network interface determined by the routing table

Edit /etc/sysctl.conf  for permanent change and run sysctl -p to reload it



To add a route dynamically

# ip route add  IP/netmask  via  router_IP

To persistent add a route, edit  /etc/sysconfig/network-scripts/route-iface

ADDRESS0=network
NETMASK0=netmask
GATEWAY0=router_ip

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