Re: [ts-7000] ts-7800 how do I make 4 (at least 2) identical network stacks?

[Jonathan Leslie <>]

Walter, thank you for your suggestions,  do you have a link/explanation to some of these? (aka IPTables, "do raw Ethernet (like a sniffer does) and Nat route them "on the box" by interface." )If I go over 4 devices on my tail wagging the dog network, I agree, I will need a router, but for now I only have to deal with 3 devices, and space is paramount.   

I believe when you talk are talking about raw ethernet, you are referring to something like this:

http://www.tenouk.com/Module41a.html

I actually have done a project already like that with 2 devices, but it was on a WinSystems epx-380 board with a QNX OS. It had the ability to make 2 network stacks and 2 SOCK settings.  I'm also exploring how I can expand that board to 4 SOCK settings. However, I want to switch to embedded arm processors: I'm in love with the TS product line, and its 1/3 the size and price of the epx-380 board. 

the bottom line is the smaller I can put this together, the better I'll be positioned to sell it. The customer has a size in mind, and I want to come in at half that.  

---

From: Walter Marvin <>
To:
Sent: Friday, November 1, 2013 8:48 PM
Subject: Re: [ts-7000] ts-7800 how do I make 4 (at least 2) identical network stacks?

 

Even better,

You can use IPTables to masquerade by interface , I think
--------------------------------------------
On Fri, 11/1/13, Jonathan Leslie <> wrote:

Subject: Re: [ts-7000] ts-7800 how do I make 4 (at least 2) identical network stacks?
To: "" <>
Date: Friday, November 1, 2013, 5:32 PM
















 









Yes Walter, that was
my suggestion as well: a dedicated router per setup, but
I've also got a space problem, and was hoping to be able
to do the whole thing on the one board.   I've got
to fit this in a tight spot under the dash of a
vehicle. 

From: Walter Marvin
<>
To:


Sent: Friday,
November 1, 2013 7:58 PM
Subject: Re:
[ts-7000] ts-7800 how do I make 4 (at least 2) identical
network stacks?


 









The easiest way is to add an external router. Nat
route two of the boxes into different IP addresses, then
take the other one native on the second Ethernet interface.
Theoretically you could do any number of of boxes, if you
provide enough cheap Nat routers



thanks



Walter

--------------------------------------------

On Fri, 11/1/13, Paul Breneman
<> wrote:



Subject: Re: [ts-7000] ts-7800 how do I make 4 (at least 2)
identical network stacks?

To:

Date: Friday, November 1, 2013, 11:38 AM

































 



















On 11/01/2013 12:18 PM, wrote:



> I have a customer that produces a device where
inside

it is a network of several devices all with IP addresses

that cannot be changed (for example 10.1.1.101,
10.1.1.102,

10.1.1.103, and 10.1.1.104 are in the product) and you
plug

your PC into this device, set your address to 10.1.1.xxx

(something not between 101-104) and off you go. My
customer

wants me to be able to put 3 of these onto a single

deployment but I'm not allowed to change any IP

addresses.



>



>



> I was hoping to to put these three into the
Ts-7800

and have unique Network stacks for each of them where
one

network doesn't know about the other ones. In this
way

I can be running three independent 10.1.1 networks say
on

eth0,eth1, and eth2. On the 4th network, eth3, (again

another 10.1.1 network) I could write a C program to
accept

a message for say 10.1.1.101, and check a digital

switch/dip switch bank selector for which of the 3
outbound

10.1.1 (eth0, eth1, eth2) is to receive the packet.



>



>



> Does anybody have any idea how I would set up such
a

configuration??? I see in the documentation for the
ts-7800

they talk about eth0 and eth1, can I at least set up 2

independent 10.1.1 networks on the same ts-7800???







Here is a simple serial and socket terminal program that

might help you



troubleshoot things: www.CtrlTerm.com







Please let me know if there are problems or questions.

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