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Port Dropping/Losing comms

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Port Dropping/Losing comms

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Port Dropping/Losing comms
Port Dropping/Losing comms
2025-05-06 10:37:21
Model: SG2008P  
Hardware Version: V3
Firmware Version: 3.20.1 Build 20240115 Rel.72847

Hi All,

 

I am having a strange 1. Which I am having a hard time to explain so here goes.

 

It's a brand new switch installed 2 weeks ago.

 

Port 8 only accepts 100M connections so I opted to use port 7 as my link. This is a Cat6 cable from the main switch (Aruba Intstant On 1830 48G)

 

on to the issue. the connection keeps dropping on Port 7. Every other port works fine. with the exception of the cable running from my main switch. no port accepts it or gets comms. I checked my cable, re-crimped it. I have had to switch ports on my Aruba a few times but it just does not seem to work anymore.

I have now resorted to plugging in my previous switch/hub in a daisy chain and that seems to work. But it's only 100M.

 

Any advice would be greatly appreciated.

 

Kind regards

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Re:Port Dropping/Losing comms
2025-05-07 01:36:19 - last edited 2025-05-07 01:47:29

Hi @CarlanNanan 

Thanks for posting in our business forum.

Auto-negotiate to 100Mb, which means the cable or the other side degrades to 100Mb.

If you force it to 1Gb, it might stop working for linkup.

Likely to be the cable.

Have you tried a 3ft cable for it?

 

There isn't much we can do for a situation like this one.

 

Edit:

Your firmware is quite obsolete.

https://support.omadanetworks.com/en/product/sg2008p/?resourceType=download

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#2
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Re:Port Dropping/Losing comms
2025-05-07 05:59:43

 Hi @Clive_A 

 

thank you for your info. I have not tried a 3ft cable yet.

I am currently updating the firmware to  V3.20_3.20.5 Build 20250117

 

What I have found is that if I reboot my main switch(Aruba). then the port wakes up and everything works as normal. I also checked. both switches are on Auto negotiate.

It happened to me 3 times now in the past hour which is worse than before. strange.

 

I also currently only have 3 devices connected to this switch. My PC, IP-Phone & Access point. each of which has an IP not in the DHCP scope of my network. So there is definitely no conflict on this side of the Omada switch. And feinitely no loop either.

 

I am going to update firmware to the latest I can find on both switches for now.

 

Kind regards

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