Ethernet switch locks and all speed lights blink simultaneously

Ethernet switch locks and all speed lights blink simultaneously. Everything runs 100mbits.  I need to power down the switch and everything comes back.  So far I have replaced the switch.  Also found an intermitently bad cable between patch panel and switch.  There were 6 hand made cables and since one was bad, I replaced all of then with factory cables.  During this process it went down at least a half dozen times.  It then worked for 4 hours and locked up again.  I had the client power the router/dsl modem and switch and the network and internet would come right back.

This all started yesterday when there was a power failure in the neighborhood.  Thou it might be unrelated, the phone system started to do goofy things like not answer and transfer to the wrong phone.  The phone, switch and router share the same power outlet on the wall but have different power strips.  I was suspecting some sort of power issue and will put the router and switch on a UPS.  (should have been done originally by the original installers!!!!)
GintarasUSAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

masnrockCommented:
That's exactly what I would try first if I were you.
masnrockCommented:
Sounds like there are some power issues going there.... get an electrician to check that all out.
MitchV85Commented:
It sounds like you had a broadcast storm. is STP running on these switches? If not then you will want to turn it on and this along with replacing the bad cables should fix your problem.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Exploring ASP.NET Core: Fundamentals

Learn to build web apps and services, IoT apps, and mobile backends by covering the fundamentals of ASP.NET Core and  exploring the core foundations for app libraries.

ssrCommented:
If you can, check the voltage that is coming from the power supply to the switch.  I would suspect that the power supply was damaged and is probably giving out the wrong voltage.  Compare this voltage reading with what the power supply is supposed to put out.

SSR
GintarasUSAuthor Commented:
I had found the solution to be not only 2 switches being damaged but also an intermitent nic card.  After the 2 swtiches were replace the system ran much better.  I still had one work station hanging and seemed to affect the rest of the network.  The replacement of nic card finally settled the network down and everything works.  It was mentioned that I might have a broadcast storm and wondered if this could be caused the network card.  Mitch865 had made that comment and made me look further into defective equipment after the power failure.
Keith AlabasterEnterprise ArchitectCommented:
Thanks for the update. If you are happy to accept Mitch's answer then please do so with an approapriate grade. If not, I will make a recommendation after the four days.

regards
keith
MitchV85Commented:
No objections here! :D
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Networking

From novice to tech pro — start learning today.