# Communication using different controllers with same ip on Perspective

**URL:** <https://forum.inductiveautomation.com/t/communication-using-different-controllers-with-same-ip-on-perspective/112415>\
**Category:** Ignition\
**Tags:** vision, perspective\
**Created:** [November 25, 2025, 10:30am UTC](https://forum.inductiveautomation.com/t/communication-using-different-controllers-with-same-ip-on-perspective/112415 "2025-11-25T10:30:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![avinash.m](https://avatars.discourse-cdn.com/v4/letter/a/9de053/32.png) [@avinash.m](https://forum.inductiveautomation.com/u/avinash.m)\
**Post date:** [November 25, 2025, 10:30am UTC](https://forum.inductiveautomation.com/t/communication-using-different-controllers-with-same-ip-on-perspective/112415/1 "2025-11-25T10:30:08Z")

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I am working with multiple controllers that share the same IP address and communicate via the HTTP protocol. In Vision, I was able to retrieve data from different controllers using Vision client tag options. How can I achieve this functionality in Perspective, given that the same IP address is used by multiple controllers? How can I effectively manage and control the data updates?

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [November 25, 2025, 11:39am UTC](https://forum.inductiveautomation.com/t/communication-using-different-controllers-with-same-ip-on-perspective/112415/2 "2025-11-25T11:39:48Z")

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Does this not cause network issues? Do they use different ports?

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [November 25, 2025, 1:29pm UTC](https://forum.inductiveautomation.com/t/communication-using-different-controllers-with-same-ip-on-perspective/112415/3 "2025-11-25T13:29:13Z")

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By "controllers" do you mean user workstations?

If so, then you are stuck with just IP address as the only unique ID that a gateway can trust, in Perspective. This a huge and effectively unsolvable problem in Perspective when NAT is involved, or when thin client/terminal server combinations are used.

This is a task for Vision. (Why are you trying to convert a working Vision application to Perspective?)