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QSFP28 Read
Posted: Mon Jun 12, 2023 7:07 pm
by EZi
Hello,
I am trying to read a QSFP28/100G adapter (Intel) but in the output I am getting some weird characters (not vendor name, serial etc). Should I change anything? I chose QSFP from the menu. I tried to read SFP+ and it returned valid data (vendor name etc). The software version is the 1.9.1.
Re: QSFP28 Read
Posted: Tue Jun 13, 2023 10:14 am
by ArT
Could you check in your QSFP datasheet how is it coded? It should be SFF-8436 or SFF-8636 which is valid for QSFP transceivers but I think that your QSFP transceived is compilant with SFF-8472 which is valid for SFP/SFP+. It happens rarely but when it happen, in such case it should be read/write as SFP not QSFP.
PS. you can read more about MSA standards here:
viewtopic.php?f=32&t=1017
Re: QSFP28 Read
Posted: Tue Jun 13, 2023 10:28 am
by EZi
Thanks for the reply.
The datasheet says the it is following the spec SFF-8636
https://www.intel.com/content/www/us/en ... brief.htmlI got some results when I set the area to 128B Page Mapping. Is this right?
Also, I am trying to start password tool but I am getting the error "device TIMEOUT". Any help on this?
Re: QSFP28 Read
Posted: Tue Jun 13, 2023 11:22 am
by ArT
Please share me dump file which you read as QSFP and the one you read as SFP.
Does brute force work as SFP?
Re: QSFP28 Read
Posted: Wed Jun 14, 2023 5:51 am
by thankfly
It based on SFF-8636, and check you power supply if returns error.
I have several the same modules, and test all are fine.
Re: QSFP28 Read
Posted: Fri Jun 23, 2023 10:49 am
by EZi
Sorry for the late response. How I can check the power supply?
@thankfly are you selecting QSFP type? Also are you getting results with the read operation with the default settings? (256)
@ArT How can I send you the dumps? Directly or I can post them here?
Re: QSFP28 Read
Posted: Fri Jun 23, 2023 1:29 pm
by ArT
You can post them here as zip file or share link to dropbox, onedrive or other cloud
Re: QSFP28 Read
Posted: Fri Jun 23, 2023 4:19 pm
by EZi
I attach two .bin. One with default read settings (256) and one with page select (128)
Re: QSFP28 Read
Posted: Mon Jun 26, 2023 9:16 am
by ArT
The page select file (128B) looks fine, but A0 area file (256B) looks corrupted, in second half only 2 first bytes are read correctly. Please select "BP" checkbox - any difference?
Re: QSFP28 Read
Posted: Mon Jun 26, 2023 10:24 am
by EZi
Hello,
Yes, using BP the read is correct. What is the case? What is the function of BP?
Also, when I am trying to 'bruteforce' the password I am getting device timeout error.