Beware of EMC switches sold as Mellanox SX6XXX on eBay

622oc12

New Member
Jun 24, 2021
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1
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Already done.
Have a problem with FRU on the CPU board.
Can you read this FRU and provide it?
Or just compare CPU board FRU in the archive above with your own and write what is wrong with it.
I seem to be having the opposite problem, in that I can read the cpu fru but not the backplate fru per output below.

Anyone have any suggestions? I was hoping to avoid the need to connect a raspberry pi to the i2c to re-write the fru data, but that may be my next step unless there is any suggestions otherwise. Thanks!

# /opt/tms/bin/mellaggra _read_fru 8 0x51 1000 fru_backplate.bin
Read fru 8 - 0x51, sz - 4096 to file fru_backplate.bin
EEPROM 8 - 0x51 was not read.

# /opt/tms/bin/mellaggra _read_fru 0 0x50 1000 fru_cpu.bin
Read fru 0 - 0x50, sz - 4096 to file fru_cpu.bin

# mlxi2c scan
0x51
0x70
 

Mithril

Active Member
Sep 13, 2019
174
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Hey, so I regret not picking up one of these "convertable" switches much much earlier. If one were to look for it now on ebay, it looks like the supply is fully dried up (for the ones that can be converted and work with ethernet), unless there a new/better search term to search for.
 

Mithril

Active Member
Sep 13, 2019
174
43
28
Why not get either of these and just unlock Ethernet and the other goodies?

Even comes with rack kit...
Ah, so I thought I ran across a couple of people who had issues getting ethernet to work on some of the models (esp ones that didn' go through the conversion), could be remembering wrong.

Second perhaps stupid question. If one needed to connect a 1GB ethernet or sfp module via a QSFP-SFP+ adapter, besides being an absolute waste for a 40GB port, would that work? Alternatively, do any 40GB MM optics support dropping down to 1GB on one or more of the 4 channels?
 

i386

Well-Known Member
Mar 18, 2016
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Ah, so I thought I ran across a couple of people who had issues getting ethernet to work on some of the models (esp ones that didn' go through the conversion), could be remembering wrong.
The 6005 are unmanaged infiniband only switches that look like the 6012. Some people bought them and thought they could convert them.
 

lambdafunction

New Member
Jun 22, 2021
9
5
3
Ah, so I thought I ran across a couple of people who had issues getting ethernet to work on some of the models (esp ones that didn' go through the conversion), could be remembering wrong.

Second perhaps stupid question. If one needed to connect a 1GB ethernet or sfp module via a QSFP-SFP+ adapter, besides being an absolute waste for a 40GB port, would that work? Alternatively, do any 40GB MM optics support dropping down to 1GB on one or more of the 4 channels?
I grabbed these from eBay to get to 1Gb Ethernet for a few ports:
- HP 655874-B21 HP 655902-001 @ $12/ea
- any GLC-T compatible SFP @ $10/ea
 

622oc12

New Member
Jun 24, 2021
4
1
3
I seem to be having the opposite problem, in that I can read the cpu fru but not the backplate fru per output below.

Anyone have any suggestions? I was hoping to avoid the need to connect a raspberry pi to the i2c to re-write the fru data, but that may be my next step unless there is any suggestions otherwise. Thanks!

# /opt/tms/bin/mellaggra _read_fru 8 0x51 1000 fru_backplate.bin
Read fru 8 - 0x51, sz - 4096 to file fru_backplate.bin
EEPROM 8 - 0x51 was not read.

# /opt/tms/bin/mellaggra _read_fru 0 0x50 1000 fru_cpu.bin
Read fru 0 - 0x50, sz - 4096 to file fru_cpu.bin

# mlxi2c scan
0x51
0x70
Update:

In my case, EMC-OEM sx6012 units, I was able to get the fru_backplate.bin backup command to succeed by changing the bus from '8' to '1' .

Perhaps of help if anyone else is having challenges with this step.

I'm now at v3.4.0012 (upgraded using HPE images starting with "manufacture.sh" booted via network)...

By chance is anyone willing to provide any tips on how one goes about enabling either of below?

> 'eth' license
> '_shell' license

If so, please PM or let me know so I can PM.

TIA
 

lambdafunction

New Member
Jun 22, 2021
9
5
3
Update:

In my case, EMC-OEM sx6012 units, I was able to get the fru_backplate.bin backup command to succeed by changing the bus from '8' to '1' .

Perhaps of help if anyone else is having challenges with this step.

I'm now at v3.4.0012 (upgraded using HPE images starting with "manufacture.sh" booted via network)...

By chance is anyone willing to provide any tips on how one goes about enabling either of below?

> 'eth' license
> '_shell' license

If so, please PM or let me know so I can PM.

TIA
Would you believe me if I said the password was in the genlicense binary & obfuscated with ROT-13 (for alpha characters) & ROT-5 (for numeric characters)? That would be crazy, right? Not saying that it is... Just run strings and look for Mellanox autosupport, maybe they can be helpful ;)
 

lambdafunction

New Member
Jun 22, 2021
9
5
3
Would you believe me if I said the password was in the genlicense binary & obfuscated with ROT-13 (for alpha characters) & ROT-5 (for numeric characters)? That would be crazy, right? Not saying that it is... Just run strings and look for Mellanox autosupport, maybe they can be helpful ;)
Oh, and you'll want an EFM_SX gen 2 license with options 53, 51, and 58 set to true. You can add 54/#ports if you want gateway ports. And a RESTRICTED_CMDS_GEN2 gen 2 license w/o any options to get _shell.