# Main PSU Port Flapping PTP 45700

**URL:** https://community.cambiumnetworks.com/t/main-psu-port-flapping-ptp-45700/108162
**Category:** PTP
**Created:** [March 5, 2026, 4:59pm UTC](https://community.cambiumnetworks.com/t/main-psu-port-flapping-ptp-45700/108162 "2026-03-05T16:59:15Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Anthony\_W\_Brown](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/a/c0e974/32.png) [@Anthony\_W\_Brown](https://community.cambiumnetworks.com/u/Anthony_W_Brown)
#### Post date: [March 5, 2026, 4:59pm UTC](https://community.cambiumnetworks.com/t/main-psu-port-flapping-ptp-45700/108162/1 "2026-03-05T16:59:15Z")

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We have a PTP 45700 Radio, users are reporting they cannot connect to site. It is a PTP45700 with a cnMatrix switch. The switch says all POE ports are ok and providing power.

In the radio logs I see the following:

 ![image](https://d1okf4ta8xniw3.cloudfront.net/original/3X/b/8/b87ebfc4244728faa7f196605ef56380bf0e43ba.png)

Have not seen this particular issue before. Trying to figure out the cause and how it should be remediated.

Thanks

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<div class="post-metadata">

### Author: ![Anthony\_W\_Brown](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/a/c0e974/32.png) [@Anthony\_W\_Brown](https://community.cambiumnetworks.com/u/Anthony_W_Brown)
#### Post date: [March 5, 2026, 5:26pm UTC](https://community.cambiumnetworks.com/t/main-psu-port-flapping-ptp-45700/108162/2 "2026-03-05T17:26:43Z")

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Also, we see on the radio status page.

![image](https://d1okf4ta8xniw3.cloudfront.net/original/3X/8/f/8f5993620941c56f260d145c3f6ebc4c061f255f.png)

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<div class="post-metadata">

### Author: ![Simon\_King](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/simon_king/32/16169_2.png) [@Simon\_King](https://community.cambiumnetworks.com/u/Simon_King)
#### Post date: [March 5, 2026, 8:54pm UTC](https://community.cambiumnetworks.com/t/main-psu-port-flapping-ptp-45700/108162/3 "2026-03-05T20:54:38Z")

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Hi @Anthony_W_Brown, welcome to the community 🤝

If you haven’t already, please raise a support ticket:

> [@Getting support from Cambium](https://community.cambiumnetworks.com/t/getting-support-from-cambium/81621):
>
> The Cambium Community site allows users of Cambium equipment and services to discuss their experiences and help each other. Although Cambium staff do read and post on the site, it is not a formal support channel. If you need help from Cambium, please [raise a support ticket](https://help.cambiumnetworks.com/hc/requests/new) by visiting [support.cambiumnetworks.com](http://support.cambiumnetworks.com) and clicking on Submit a request.