Static Route Help - RT-AC66U

[fahmid]

Hi, I have a quick question:

I have the ASUS RT-AC66U with Merlin's build 3.0.0.4.372.31.

I am currently Static routing (on the router) an external IP to come through a different Gateway , and it is working fine. However, now I wish to route a range of IPs, (e.g. 123.123.123.1 to 123.123.123.50). Is there any way I can do that, short of adding each one by one?

 

[janosek]

Hi, I have a quick question:

I have the ASUS RT-AC66U with Merlin's build 3.0.0.4.372.31.

I am currently Static routing (on the router) an external IP to come through a different Gateway , and it is working fine. However, now I wish to route a range of IPs, (e.g. 123.123.123.1 to 123.123.123.50). Is there any way I can do that, short of adding each one by one?

Yes, you can use CIDR notation. Check out:
http://ip2cidr.com/

 

[fahmid]

I can't seem to add more than 15 characters to the "IP" box in the Static Route Section on my ASUS router.

E.g.

If I want to forward 123.12.123.12 - .15, the CIDR notation shows that I should use "123.12.123.12/30". However, if I copy and paste that into the IP box in my router, it shows up as "123.12.123.12/3" and wont allow my to enter any digits without erasing.

 

[janosek]

Hello,

You may need to put the code in one of the scripts, if the GUI doesn't let you do it.

 

[fahmid]

Ah, I see. I did some digging about user-scripts (something about saving them in the jffs partition, etc etc)... but I am completely clueless about this. (https://github.com/RMerl/asuswrt-merlin/wiki/User-scripts)

Is there any website/wiki/forum post that I can look at to learn?


EDIT:

So I have all my JFFS partition set up, along with Telnet and SSH on my router. I can access the partition with WinSCP and create files (I have created services-start) in the scripts folder without a problem.

My "services-start" looks like this:

#!/bin/sh

sh /jffs/scripts/route_vpn.sh&

The part I am confused about is how to script a route. I have the following (and i know it is wrong, so any help would be appreciated!)

My route_vpn.sh looks like this:

#!/bin/sh

ip route add 190.93.249.164 via 192.168.0.1

Then I changed the file's permission to be executable, and rebooted the router. However, it doesn't work (not a big surprise since I am 99% sure that my route_vpn.sh coding is wrong).

Could someone tell me what the format would be for this type of a script?

Thanks

EDIT2:

So I got the static routing to work. I switced to firewall-start and use a different coding format. However, it seems like CIDR is not working. If I add a specific IP (say 123.123.123.5), then the routing works. However, if I want a range using CIDR notation (e.g. 123.123.123.1 to 123.123.123.10), then its not working. The code, using CIDR notation is the following:

#!/bin/sh

route add 123.123.123.1/32 gw 192.168.0.1
route add 123.123.123.2/31 gw 192.168.0.1
route add 123.123.123.4/30 gw 192.168.0.1
route add 123.123.123.8/31 gw 192.168.0.1
route add 123.123.123.10/32 gw 192.168.0.1

But this isn't working. Is there anything I am doing wrong with the CIDR notation?

 

[janosek]

Try "ip route add"

http://www.cyberciti.biz/faq/howto-linux-configuring-default-route-with-ipcommand/

 

[fahmid]

Thanks so much! That seemed to do the trick.