Linux - Persistent routes not working Post: 302221874

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Top Forums UNIX for Advanced & Expert Users Linux - Persistent routes not working Post 302221874 by ynilesh on Tuesday 5th of August 2008 12:47:55 PM

08-05-2008

Registered User

When you set route with route command, it sets temporary and restarting network service will brush up all your temporary set routes.

In case of linux, permanent static routes are added on a per interface basis in files located in the /etc/sysconfig/network-scripts directory. The filename format is route-interface-name so the filename for interface wlan0 would be route-wlan0.

The format of the file is quite intuitive with the target network coming in the first column followed by the word via and then the gateway's IP address. In our routing example, to set up a route to network 10.0.0.0 with a subnet mask of 255.0.0.0 (a mask with the first 8 bits set to 1) via the 192.168.1.254 gateway, we would have to configure file /etc/sysconfig/network-scripts/route-wlan0 to look like this:

Quote:

#
# File /etc/sysconfig/network-scripts/route-wlan0
#
10.0.0.0/8 via 192.168.1.254

Note: The /etc/sysconfig/network-scripts/route-* filename is very important. Adding the wrong interface extension at the end will result in the routes not being added after the next reboot. There will also be no reported errors on the screen or any of the log files in the /var/log/ directory.

You can test the new file by running the

Code:

/etc/sysconfig/network-scripts/ifup-routes

You can try this too..

Code:

 netstat -nr

- nilesh

ynilesh

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LEARN ABOUT DEBIAN

shorewall-routes

SHOREWALL-ROUTES(5)						  [FIXME: manual]					       SHOREWALL-ROUTES(5)

NAME

       routes - Shorewall file

SYNOPSIS

       /etc/shorewall/routes

DESCRIPTION

       This file was added in Shorewall 4.4.15 and is used to define routes to be added to provider routing tables.

       The columns in the file are as follows.

       PROVIDER
	   The name or number of a provider defined in shorewall-providers[1] (5).

       DEST
	   Destination host address or network address.

       GATEWAY (Optional)
	   If specified, gives the IP address of the gateway to the DEST.

       DEVICE (Optional)
	   Specifies the device route. If neither DEVICE nor GATEWAY is given, then the INTERFACE specified for the PROVIDER in
	   shorewall-providers[1] (5).

FILES

       /etc/shorewall/routes

SEE ALSO

       http://shorewall.net/configuration_file_basics.htm#Pairs

       shorewall(8), shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5),
       shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5), shorewall-netmap(5), shorewall-params(5),
       shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5), shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5),
       shorewall.conf(5), shorewall-secmarks(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5),
       shorewall-tunnels(5), shorewall-zones(5)

NOTES

	1. shorewall-providers
	   http://www.shorewall.net/manpages/shorewall-providers.html

[FIXME: source] 						    06/28/2012						       SHOREWALL-ROUTES(5)