# Cerbo GX LAN not working, lights always on/blinking even when no cable is connected

**URL:** <https://community.victronenergy.com/t/cerbo-gx-lan-not-working-lights-always-on-blinking-even-when-no-cable-is-connected/30228>\
**Category:** Q&A and troubleshooting\
**Tags:** ethernet, domestic, beginner, cerbo\_gx\
**Created:** [26 April 2025 19:11 UTC](https://community.victronenergy.com/t/cerbo-gx-lan-not-working-lights-always-on-blinking-even-when-no-cable-is-connected/30228 "2025-04-26T19:11:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![SirenInk](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/sirenink/32/19490_2.png) [@SirenInk](https://community.victronenergy.com/u/SirenInk)\
**Post date:** [26 April 2025 19:11 UTC](https://community.victronenergy.com/t/cerbo-gx-lan-not-working-lights-always-on-blinking-even-when-no-cable-is-connected/30228/1 "2025-04-26T19:11:22Z")

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I’ve got a weird one here, new set up, cerbo gx LAN interface does not pick up any IP from DHCP, already tested the same cable and switch port on a laptop and desktop, both get DHCP lease. I tried static IP address, no difference. Unplugging the network cable and the link LED keeps steady on and activity LED on the network port flashing.

This sounds like a dodgy port to me. Any thoughts?

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**Author:** ![SirenInk](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/sirenink/32/19490_2.png) [@SirenInk](https://community.victronenergy.com/u/SirenInk)\
**Post date:** [26 April 2025 19:16 UTC](https://community.victronenergy.com/t/cerbo-gx-lan-not-working-lights-always-on-blinking-even-when-no-cable-is-connected/30228/2 "2025-04-26T19:16:04Z")

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**Author:** ![MiPaul](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/mipaul/32/41338_2.png) [@MiPaul](https://community.victronenergy.com/u/MiPaul)\
**Post date:** [26 April 2025 20:07 UTC](https://community.victronenergy.com/t/cerbo-gx-lan-not-working-lights-always-on-blinking-even-when-no-cable-is-connected/30228/3 "2025-04-26T20:07:49Z")

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Is it new, has it ever worked? Can you Bluetooth with Connect?

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**Author:** ![SirenInk](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/sirenink/32/19490_2.png) [@SirenInk](https://community.victronenergy.com/u/SirenInk)\
**Post date:** [26 April 2025 20:25 UTC](https://community.victronenergy.com/t/cerbo-gx-lan-not-working-lights-always-on-blinking-even-when-no-cable-is-connected/30228/4 "2025-04-26T20:25:34Z")

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New, installed today. I just noticed the LAN port problem after my initial Bluetooth and WiFi set up. Everything else seems to be working fine.