Arista DCS-7050QX-32

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Foray

Member
May 22, 2016
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4.22.0F does not work on the 7050QX-32.

"Failed to start TCG Core Services Daemon."
And the ASIC never comes online.
 

zxv

The more I C, the less I see.
Sep 10, 2017
156
57
28
Is it possible to reverse the airflow for the fans on a Arista DCS-7050QX?

Looking at the datasheet, there is an active circuit that uses a 3V PWM signal to control speed.
Based on that, it seems that swapping fan leads will not work.
https://datasheet.octopart.com/9GA0412P3J01-Sanyo-Denki-datasheet-8502716.pdf

So, what about physically turning the fan around to push rather pull air?
Can one unbolt the fan, and turn the fan around to point the opposite direction?
It looks like the leads are long enough to do so.
But will that create any issues?

IMG_20190601_235247.jpg IMG_20190601_235100.jpg IMG_20190601_235944.jpg
 

zxv

The more I C, the less I see.
Sep 10, 2017
156
57
28
I've reversed the fans for these switches on both the fan units and the PSUs... no problems so far (it's been 2 years?)
Thanks for the confirmation. I went ahead and physically reversed the fans, and it went smoothly -- no issues, The sensors report the same speed, so everything looks good. Much appreciated.

On a separate note, afterward I tried upgrading to 4.22.0F, and
both 'show env cooling' and 'show env temperature' produced no output.
The fans turned at ~60%, the same as older releases, so I'm not sure it's an issue.
I switched back to 4.21.02F to be safe.
 
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jarekd

New Member
Apr 21, 2018
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Not true. 4.22 should work for latest Arista switches
I advise to try 4.22 2GB image for older switches - e.g. 7150S and 7050QX-32

localhost#sh ver
Arista DCS-7060SX2-48YC6-F
Hardware version: 11.50
Serial number:
System MAC address:

Software image version: 4.22.0F
Architecture: i386
Internal build version: 4.22.0F-12170486.4220F
Internal build ID: c22655c6-3559-4ac6-bece-8b7f0c067749

Uptime: 0 weeks, 0 days, 12 hours and 5 minutes
Total memory: 8104428 kB
Free memory: 6727512 kB
 

Foray

Member
May 22, 2016
59
30
18
I did not have a problem loading the OS, where the problem shows is that the OS does not recognize the ASIC anymore.

Not true. 4.22 should work for latest Arista switches
I advise to try 4.22 2GB image for older switches - e.g. 7150S and 7050QX-32

localhost#sh ver
Arista DCS-7060SX2-48YC6-F
Hardware version: 11.50
Serial number:
System MAC address:

Software image version: 4.22.0F
Architecture: i386
Internal build version: 4.22.0F-12170486.4220F
Internal build ID: c22655c6-3559-4ac6-bece-8b7f0c067749

Uptime: 0 weeks, 0 days, 12 hours and 5 minutes
Total memory: 8104428 kB
Free memory: 6727512 kB
 

fohdeesha

Kaini Industries
Nov 20, 2016
2,721
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fohdeesha.com
4.18.11M is the latest stable in the 4.18.x codetrain, works great. granted if you're talking about the 7050QX-32s, you can run much newer
 

Stril

Member
Sep 26, 2017
191
12
18
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Thank you. I am using "7050QX-32" (without "s"). So, I will try 4.18.11M, now.

Thank you!
 

MrReeds

New Member
Jul 10, 2019
2
0
1
I would like EOS-4.18.5M for 7050S also if possible
or if 4.18.11M also works then that
 
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