Connecting Networks

I got another side job and the customer has 7 lines he wants to network together and data collect from.

Most of these are clogix but there are 2 slc units that are 5/04 but I am going to change to 5/05.

All this stuff has different IP ranges like 192.168.1.xxx and 10.10.115.xxx and 10.10.80.xxx

Pretty much going to change all the ip addresses but each line can have up to 4 networks / 4 enbt modules.

What would be a good scheme to go with where I could change the maintenance laptops subnet mask to be able to work on any line they are plugged into?

I was thinking of using a cisco router to connect all the networks to the data collection system.

I mention doing the masking on the maintenance laptops so that they could connect and be used even if there was a issue with the router.

They have a sonicwall NSA series firewall that I can use to seperate the PLC network from the corporate.

Am I on the right path? Opinions? Caveats? Additional items I should be considering?

All this stuff has different IP ranges like 192.168.1.xxx and 10.10.115.xxx and 10.10.80.xxx

We always use a 1 at the end of the subnet.
If your IP is 10.10.115.XXX then your subnet is 10.10.115.1

Mark Buskell said:

All this stuff has different IP ranges like 192.168.1.xxx and 10.10.115.xxx and 10.10.80.xxx

We always use a 1 at the end of the subnet.
If your IP is 10.10.115.XXX then your subnet is 10.10.115.1

Click to expand...

That wont really tell anything about subnet. Atleast XXX hints to /24 subnet.

Mark Buskell said:

All this stuff has different IP ranges like 192.168.1.xxx and 10.10.115.xxx and 10.10.80.xxx

We always use a 1 at the end of the subnet.
If your IP is 10.10.115.XXX then your subnet is 10.10.115.1

Click to expand...

Mark

In the 10.10.80.xxx example I used the .xxx part is just a shorthand sort way to say 255 node addresses or 0-254.

What is max count of addresses you need in one subnet? Do you need those subnets really separated from each other?

For example, if you have four subnets of 64 adresses (62 usable) you could have

192.168.1.0/26
192.168.1.64/26
192.168.1.128/26
192.168.1.192/26

and you laptop in

192.168.1.0/24

Laptop would belong to all four subnets with mask of /24

You can use this to visualize where different addresses would belong. You can try different configurations.

First off, Ditch using 192.168.a.b anywhere. That way you don't have to worry about the shedloads of consumer gear that defaults in that range.
10.a.b.c for the win!

Second, Turbo is right.

If you wanted more ip's for each range, use something like this
10.a.1.x/24
10.a.2.x/24
10.a.3.x/24
10.a.4.x/24

and the laptops on
10.a.5.x/21

From their spec they want 4 networks for each line each with 256 possible nodes for each network and they want the laptops to connect and comm to all 4 networks on each line and from line to line without techs having to change ip address settings

Dravik said:

First off, Ditch using 192.168.a.b anywhere. That way you don't have to worry about the shedloads of consumer gear that defaults in that range.
10.a.b.c for the win!

Second, Turbo is right.

If you wanted more ip's for each range, use something like this
10.a.1.x/24
10.a.2.x/24
10.a.3.x/24
10.a.4.x/24

and the laptops on
10.a.5.x/21

Click to expand...

So something like

Line # 1

10.1.1.1-255/24
10.1.2.1-255/24
10.1.3.1-255/24
10.1.4.1-255/24

Line # 2

10.2.1.1-255/24
10.2.2.2-255/24
10.2.3.3-255/24
10.2.4.4-255/24

Line # 3

10.3.1.1-255/24
10.3.2.2-255/24
10.3.3.3-255/24
10.3.4.4-255/24

On the right Track?

The Plc Kid said:

So something like

Line # 1

10.1.1.1-255/24
10.1.2.1-255/24
10.1.3.1-255/24
10.1.4.1-255/24

Line # 2

10.2.1.1-255/24
10.2.2.2-255/24
10.2.3.3-255/24
10.2.4.4-255/24

Line # 3

10.3.1.1-255/24
10.3.2.2-255/24
10.3.3.3-255/24
10.3.4.4-255/24

On the right Track?

Click to expand...

Yes and no.

Line1
10.1.0.0/24
10.1.1.0/24
10.1.2.0/24
10.1.3.0/24

Line2
10.1.4.0/24
10.1.5.0/24
10.1.6.0/24
10.1.7.0/24

...

Laptop would need:

10.1.0.0/19

Remember, this is about masks.

Devices would have:

Line1 Network 1 device 1
10.1.0.1/24
Line1 Network 1 device 2
10.1.0.2/24

etc.

TurpoUrpo said:

Yes and no.

Line1
10.1.0.0/24
10.1.1.0/24
10.1.2.0/24
10.1.3.0/24

Line2
10.1.4.0/24
10.1.5.0/24
10.1.6.0/24
10.1.7.0/24

...

Laptop would need:

10.1.0.0/19

Remember, this is about masks.

Devices would have:

Line1 Network 1 device 1
10.1.0.1/24
Line1 Network 1 device 2
10.1.0.2/24

etc.

Click to expand...

In my example I was tring to make the 10.1.0.1 second octet correspond with the line number but I guess that won't be possible?

Theywant each line to be isolated networks pretty much these is 2 lines that will need to pass a little data back and fourth and they will all communicate to the conveyor system and the data collection system but not each other.

I am thinking the 2 lines that need to pass data can be done with a message instruction. I am going to assume the message instruction is routable? Is that correct?

The Plc Kid said:

In my example I was tring to make the 10.1.0.1 second octet correspond with the line number but I guess that won't be possible?

Click to expand...

It is possible, but it would consume ****load of addresses and make future additions harder.

How would you mask the second octet to correspond with the line number? It would take a lot of addresses?

I don't see that much expansion in this place really. It's about tapped out with no room for expansion. Can't even build on where they are.

It was justa idea the customer had. I did not know how feasible it was.