FreeBSD Set a Default route/gateway

FreeBSD Set a Default route/gateway

by Nixcraft on January 13, 2008 • 7 COMMENTS· Last UPDATED October,

In FREEBSD, NETWORKING, troubleshooting

Q. How does I modify or set a default route for my FreeBSD server? How does I make default route configuration persistent?

A. the route command is used under FreeBSD to manually manipulate the network routing tables. It provides six commands:
= = Add : Add a route.

= = Flush : Remove all routes.

= = Delete : Delete a specific route.

= Change: Change aspects of a route (such as its gateway).

= = Get : Lookup and display the route for a destination.

= = Monitor : Continuously report no changes to the routing information base, routing lookup misses, or Suspec Ted Network Partitionings.

Task:view/display FreeBSD Routing Table

Use netstat command with-r option:
$ netstat -r
$ netstat -rn
Output:

Routing tablesinternet:destination        Gateway            flags    Refs      use  netif expiredefault            61.221. Xx.yy       ugs         0      247    em110                 10.10.110.5        ugs         0    em010.10.110/26       link# 1             UC          0        0    em010.10.110.5        00:1b:0d:e6:58:40  uhlw        2        0    em0   114561.221.xx.yy/29    link#2             UC          0        0    em161.221.xx.yy       00:1b:0d:e6:57:c0  UHLW        2        0    em1   105561.221.xx/24       link#2             UC          0        0    em1127.0.0.1          127.0.0.1          UH          0        0    lo0

The first and the line displays default routes.

Task:freebsd Set a default route

All network packets cannot is sent according to the previous entries of the routing table is sent through the follow ing default gateway:
# route add default 192.168.1.254

How does I save routing information to a configuration file?

If You reboot FreeBSD box, the routing configuration would be lost i.e. the routing information would not persist. You need to edit/etc/rc.conf file to set Defaultroute:
# vi /etc/rc.conf
Set default route by editing Defaultrouter variable:
defaultrouter="192.168.1.254"
Save and close the file.

Task:start and Stop FreeBSD configured Interfaces

To apply changes to a configuration file, you need to stop and restart the corresponding FreeBSD networking interface. The following command would also update routing information:
# /etc/rc.d/netif restart
# /etc/rc.d/routing stop
# /etc/rc.d/routing start
Source: >  

From for notes (Wiz)

FreeBSD Set a Default route/gateway