# Multiple Lines Same Backend?

**URL:** <https://forum.inductiveautomation.com/t/multiple-lines-same-backend/50396>\
**Category:** Ignition\
**Created:** [August 27, 2021, 7:32pm UTC](https://forum.inductiveautomation.com/t/multiple-lines-same-backend/50396 "2021-08-27T19:32:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jbpingston](https://avatars.discourse-cdn.com/v4/letter/j/eada6e/32.png) [@jbpingston](https://forum.inductiveautomation.com/u/jbpingston)\
**Post date:** [August 27, 2021, 7:32pm UTC](https://forum.inductiveautomation.com/t/multiple-lines-same-backend/50396/1 "2021-08-27T19:32:33Z")

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Hello,

I am setting up database connection for a system that has multiple lines. I am using postgreSQL and the PLCs on each line have the same IP address.Line 1 plc is 10.0.0.112, Line 2 plc is 10.0.0.112, Line 3 plc is 10.0.0.112, etc. Should there be any concern of data clashing?

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**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\
**Post date:** [August 27, 2021, 7:45pm UTC](https://forum.inductiveautomation.com/t/multiple-lines-same-backend/50396/2 "2021-08-27T19:45:14Z")

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Duplicate IPs on the same logical network is a bad idea.

Assuming there are other devices on each line that would also be duplicates, I'd recommend a NAT device of some sort on each line to provide a logical separation between them.  
See this thread here:

> [@Worlds Cheapest NAT Router. Will it work? Wire-shark Capture](https://forum.inductiveautomation.com/t/worlds-cheapest-nat-router-will-it-work-wire-shark-capture/28621):
>
> Hey y’all While I await IT’s plan for some type of converged ethernet architecture in our plant or approval to buy good networking hardware at the machine level. I bought [this](https://www.ui.com/edgemax/edgerouter-x/) router. To try and get one of the 30 machines, with more or less the same config, I have online. 50 bucks and claims to do what I need. Has a pretty cool web app that gives access to the os to make all the rules and whatnot. These machines, par for the course, all have their own network. In the default range. Somethi…