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Impossible to connect multiple Mux between them #2839

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opened 2025-12-29 18:22:42 +01:00 by adam · 1 comment
adam commented 2025-12-29 18:22:42 +01:00
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Originally created by @Pelt10 on GitHub (Aug 29, 2019).

Environment

  • Python version: 3.5.3
  • NetBox version: 2.6.2

Steps to Reproduce

  1. Create "Mux" device like this :
    image
  2. Rack 2 "mux" devices, a "CWDM" mux and a "DWDM" mux
  3. Connect Rx COM of the DWDM mux to any Rx port of the CWDM mux.

Expected Behavior

It connect correctly, to respect this architecture:
image

Observed Behavior

This error occurred :
image

Originally created by @Pelt10 on GitHub (Aug 29, 2019). ### Environment * Python version: 3.5.3 * NetBox version: 2.6.2 <!-- Describe in detail the exact steps that someone else can take to reproduce this bug using the current stable release of NetBox (or the current beta release where applicable). Begin with the creation of any necessary database objects and call out every operation being performed explicitly. If reporting a bug in the REST API, be sure to reconstruct the raw HTTP request(s) being made: Don't rely on a wrapper like pynetbox. --> ### Steps to Reproduce 1. Create "Mux" device like this : ![image](https://user-images.githubusercontent.com/7582586/63949885-56596c80-ca7b-11e9-9835-90beeb2ca0d6.png) 2. Rack 2 "mux" devices, a "CWDM" mux and a "DWDM" mux 3. Connect Rx COM of the DWDM mux to any Rx port of the CWDM mux. <!-- What did you expect to happen? --> ### Expected Behavior It connect correctly, to respect this architecture: ![image](https://user-images.githubusercontent.com/7582586/63950280-fadbae80-ca7b-11e9-8344-dc5b061d0e6f.png) <!-- What happened instead? --> ### Observed Behavior This error occurred : ![image](https://user-images.githubusercontent.com/7582586/63950401-35dde200-ca7c-11e9-8051-8977bdc4c39f.png)
adam closed this issue 2025-12-29 18:22:42 +01:00
adam commented 2025-12-29 18:22:42 +01:00
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@jeremystretch commented on GitHub (Sep 3, 2019):

Connections cannot be condensed via rear ports multiple times. This is a limitation of the cable model we've chosen.

@jeremystretch commented on GitHub (Sep 3, 2019): Connections cannot be condensed via rear ports multiple times. This is a limitation of the cable model we've chosen.
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Reference: starred/netbox#2839
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