IBM-MAIN@LISTSERV.UA.EDU
Subject: [External] Re: Debugging "A high error rate was detected on the
Optical Link network." HMC alert
We've got it!
"when it was connected to another mainframe, but it has it now"
So something has changed. This is the most likely moment for e
e was detected on the
Optical Link network." HMC alert
We've got it!
"when it was connected to another mainframe, but it has it now"
So something has changed. This is the most likely moment for error.
Now it's time for investigation - what cable is new, what is old
Discussion List On Behalf Of
Radoslaw Skorupka
Sent: Tuesday, April 6, 2021 6:07 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [IBM-MAIN] Debugging "A high error rate was detected on the
Optical Link network." HMC alert
[External Email: Use caution with links and attachments]
We've got i
We've got it!
"when it was connected to another mainframe, but it has it now"
So something has changed. This is the most likely moment for error.
Now it's time for investigation - what cable is new, what is old, what
plug was inserted, etc.
--
Radoslaw Skorupka
(looking for new job)
Lodz, Polan
Hello,
I understand that ideally I would find the error - but all the values seem
correct in my eyes.
The optical values are fine, no errors shown on the interfaces, etc.
This bugs me a bit. I did not have this issue when it was connected to
another mainframe, but it has it now...
Regards,
On T
You can disable that using HMC features (it is called Optical Network
Errors or similar).
However DON'T DO IT.
This is symptom of some problem. It can be pinched FO cable, dirty
connector or failing SFP module.
Unfortunately it is almost good, so there is no simple way to know
whether cable cha
Good day,
Recently I have been getting these kinds of alerts from my HMC. It all
started when I connected an old DS6800 and the details are:
Node 1
Machine: 2498-B40
Serial: IBMCA107312B
Physical Interface: 6620
Logical Interface: 0020
Node 2
Machine: 1750-511
Serial: IBM13715
Physical Inter
