Adding entries to the routing table

[Scott Dunkley]

When I add an entry into the routeing table, it is deleted after a reboot, how can I stop this happening and make the routes permamnent ?

[Rita C Workman · Accepted solution]

I'm going to guess you did a route command only...

Did you go to the /etc/rc.config.d/netconf file and make the entry in their also?
It's the netconf file that makes for permanent routing information.

Hope this helps,

[Kofi ARTHIABAH]

Yes. you have to edit the /etc/rc.config.d/netconf file and add multiple entries for each route with

ROUTE_DESTINATION[0]=default
ROUTE_MASK[0]=""
ROUTE_GATEWAY[0]=ip.of.gate.way
ROUTE_COUNT[0]=1
ROUTE_ARGS[0]=""

there is an example in the /etc/rc.config.d/netconf file.

[Alex Glennie]

..... and check with netstat -rn in you haven't been

[Andreas Voss]

Hi,

you have to edit the file /etc/rc.config.d/netconf

Example:
route add net 191.3.0.0 netmask 255.255.0.0 191.2.4.8 1

ROUTE_DESTINATION[#]="net 191.3.0.0"
ROUTE_MASK[#]="255.255.0.0"
ROUTE_GATEWAY[#]=191.2.4.8
ROUTE_COUNT[#]=1
ROUTE_ARGS[#]=""

You have to choose the right index # within the [] (just increment uniq)

Regards

Andrew

[Anthony deRito]

Scott, just an FYI... this is the way the dynamic routes work. When the box is bounced, the routing tables are flushed. It is like doing a route -f on the command line. As the routes are learned by your router or level 3 switch, your tables will be populated. This is important to understand becasue if there is more than one route to a device, the tables will dynamically reflect that alternate route and your packet will still get to its destination.

You did not really lose your routes. As a test, when the system comes back up, run a netstat -rn. You won't see the route as you have described. Now ping a device and use a gateway which you expected to see the routing table. Now run netstat -rn again and see how the routing tables dynamically learned the route.

Tony

[CHRIS_ANORUO]

Hi Scott,

If you check the routing entries with this command netstat -rn, any missing destinations can be added with:

route add X.Y.W.Z(network address) X.Y.W.Z(gateway address)


Chris

[P V Patel]

By adding following entry to /etc/rc.config.d/netconf file:
ROUTE_DESTINATION[I]="ip of destination host"
ROUTE_MASK[I]=""
ROUTE_GATEWAY[I]={ip of gate way}
ROUTE_COUNT[I]=1
ROUTE_ARGS[I]=""
You may add route permenantly.
regards.
Punjabhai V Patel

[Graham Forecast]

If you don't feel confident editing system configuration files, you can also set up permanent routes using 'sam'. Go to 'Networking and Communications'/'Internet Addresses', select the IP address you want a route for and selsct 'Actions-Modify'. You can then change the gateway to 'Modify Gateway for this Connection'.

Note - if you use 'sam' to add the IP address, you may not be able to select this entry until you have completed the creation - then use the above to go back into 'Modify' (this is how it works on our 10.20 systems).