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Duplicate prefixes but in Isolated Networks #1871

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opened 2025-12-29 17:19:56 +01:00 by adam · 1 comment
adam commented 2025-12-29 17:19:56 +01:00
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Originally created by @JSystem1 on GitHub (Jul 25, 2018).

Issue type

[X] Feature request
[ ] Bug report
[ ] Documentation
[ ] Housekeeping

Environment

  • Python version: 2.6
  • NetBox version: 2.3.2

Description

Currently I have three DCs all have separated isolated networking so we have the same ranges that are been used within our separate networks.

We are currently not using the VRFs feature for ease of use and have opted for Global VRFs which you have stated means that the specific prefix is used within our three networks in this case.

So if you define three duplicate prefixes and isolate them within there own site and tenant they still come up as duplicates.

It would be nice when creating regions or sites to have an option that it is a separate network so for example separate networks would have there own global routing table which takes out the problem.

The only way around this is creating VRFs at this moment of time but I think there should be some defined method to state if the networks are different

Originally created by @JSystem1 on GitHub (Jul 25, 2018). <!-- Before opening a new issue, please search through the existing issues to see if your topic has already been addressed. Note that you may need to remove the "is:open" filter from the search bar to include closed issues. Check the appropriate type for your issue below by placing an x between the brackets. For assistance with installation issues, or for any other issues other than those listed below, please raise your topic for discussion on our mailing list: https://groups.google.com/forum/#!forum/netbox-discuss Please note that issues which do not fall under any of the below categories will be closed. Due to an excessive backlog of feature requests, we are not currently accepting any proposals which extend NetBox's feature scope. Do not prepend any sort of tag to your issue's title. An administrator will review your issue and assign labels as appropriate. ---> ### Issue type [X] Feature request <!-- An enhancement of existing functionality --> [ ] Bug report <!-- Unexpected or erroneous behavior --> [ ] Documentation <!-- A modification to the documentation --> [ ] Housekeeping <!-- Changes pertaining to the codebase itself --> <!-- Please describe the environment in which you are running NetBox. (Be sure to verify that you are running the latest stable release of NetBox before submitting a bug report.) If you are submitting a bug report and have made any changes to the code base, please first validate that your bug can be recreated while running an official release. --> ### Environment * Python version: 2.6 * NetBox version: 2.3.2 <!-- BUG REPORTS must include: * A list of the steps needed for someone else to reproduce the bug * A description of the expected and observed behavior * Any relevant error messages (screenshots may also help) FEATURE REQUESTS must include: * A detailed description of the proposed functionality * A use case for the new feature * A rough description of any necessary changes to the database schema * Any relevant third-party libraries which would be needed --> ### Description Currently I have three DCs all have separated isolated networking so we have the same ranges that are been used within our separate networks. We are currently not using the VRFs feature for ease of use and have opted for Global VRFs which you have stated means that the specific prefix is used within our three networks in this case. So if you define three duplicate prefixes and isolate them within there own site and tenant they still come up as duplicates. It would be nice when creating regions or sites to have an option that it is a separate network so for example separate networks would have there own global routing table which takes out the problem. The only way around this is creating VRFs at this moment of time but I think there should be some defined method to state if the networks are different
adam closed this issue 2025-12-29 17:19:56 +01:00
adam commented 2025-12-29 17:19:57 +01:00
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@jeremystretch commented on GitHub (Jul 25, 2018):

Currently I have three DCs all have separated isolated networking so we have the same ranges that are been used within our separate networks.

This is the exact use case for VRFs.

We are currently not using the VRFs feature for ease of use and have opted for Global VRFs

This isn't a thing. A prefix is said to belong to the global table if it is not assigned to a VRF.

Please post to the mailing list if you need any further guidance.

@jeremystretch commented on GitHub (Jul 25, 2018): > Currently I have three DCs all have separated isolated networking so we have the same ranges that are been used within our separate networks. This is the exact use case for VRFs. > We are currently not using the VRFs feature for ease of use and have opted for Global VRFs This isn't a thing. A prefix is said to belong to the _global table_ if it is not assigned to a VRF. Please post to the mailing list if you need any further guidance.
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