Getting subnets to talk to eachother

DiCe! · 2 Oct 2014 at 15:24

Hi guys,

I have an issue and I am hoping someone can help.

We have set up a network with a range of 172.20.1.1-250
The router is at 250
Almost all of the devices on the network are static IP's

We were then asked to add 150 extra devices onto this network, and didnt have enough addresses in the xxx.xx.1.xxx range.
So I created another VLAN? 172.20.2.xxx

Devices on that vlan/subnet can see the router but I cant get anything on 172.20.1.xxx to talk to 172.20.2.xxx

Does anyone have any idea why?! If I have explained this badly, sorry, networking is not my forte but have been asked to do this and am almost certain I wont get any help from others so....need to make it work.

If you need anyother info etc I will provide.

Many thanks!!

DiCe! · 3 Oct 2014 at 09:13

skyripper said:
So.. You have two subnets now 172.20.1.x and 172.20.2.x
This tells us your Subnet Mask is something like 255.255.255.0
Thats the first thing to confrm.
You can check this on the router, or on one of the original client machines by looking in the TCPIP properties.

A VLAN, is a way of separating a network switch, which isn't really what you need in this case. Was the 'VLAN' created on the router or configured in the network switch?

That is correct, it is created in the router.

skyripper said:
The other question is how big is your network?

Is the Router just for talking to the internet, or do you have multiple sites/locations?

Nothing is going external it is just for internal equipment to talk to each other.

skyripper said:
250 is 11111010 in binary, meaning that subnet mask is a bit mental.
248 or 252 would work.

I did try 250 and 252 but had no such luck.

It isnt a home style router it is a quite powerful one called a ruckus, http://www.ruckuswireless.com/

I am thinking more and more they have a setting somewhere in it to stop things talking between subnets.

DiCe! · 3 Oct 2014 at 12:35

http://www.ruckuswireless.com/products/zonedirector-controller/zonedirector-10001100

Thats what Im working with.

Spent the morning pulling my hair out. I hate networks. I broke it and then had to restore...thank god I took that backup.

DiCe! · 3 Oct 2014 at 14:33

Ill get on it Monday morning,

Thanks for the help guys.

DiCe! · 6 Oct 2014 at 10:47

Changed the subnet mask, as I had done last week and it worked today, however, at the end of last week it **** itself and I spent a good amount of time restoring.
All I can think of is that there was something wrong somewhere that the restore fixed.

Thanks all for the help!