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Does anyone know the command that enables the usage of 3rd party SFP+ on an Arista 7148S switch?

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2 Answers 2

up vote 4 down vote accepted
  1. Login as admin;
  2. Enable privileged access;
  3. Go to the bash shell;
  4. Touch the filename /mnt/flash/enable3px;
  5. Reboot the switch.

Below is a session from EOS-4.11.6:

localhost login: admin

Arista Networks EOS shell

[admin@localhost ~]$ touch /mnt/flash/enable3px
[admin@localhost ~]$ sudo reboot
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According to an anonymous user... this is either false or not applicable to most arista switches. this command does not exist on the /mnt/flash directory on 7124s, and is likely a troll. –  HopelessN00b Oct 5 '12 at 20:57
According to a 1 rep user... bash: /mnt/flash/enable3px: No such file or directory –  HopelessN00b Oct 5 '12 at 20:58
Interesting :) I'm not sure. I don't have access to Arista anymore. –  ewwhite Nov 5 '12 at 16:43
Seems I can't comment yet, so this is confirming @waszkiewicz answer worked for us. We just received a new 7150s. Using the Finisar SFP+ modules we had in stock produced "errdisabled xcvr-unsupported." Using the commands above, we are now up and running. "connected a-full a-1G 1000BASE-T" EOS-4.14.1F.swi Just saw the rest of the question was for a EOL 7148S. We have a 7150S, so ymmv. –  chaddow Oct 16 '14 at 15:20
This worked for me today on an Arista 7148. Thanks. –  Tim Kennedy Oct 22 '14 at 17:20

The enable3px file is a dummy file. You can create a 0kb txt and rename it "enable3px" and it will work all the same. Hope this helps.

This method seems to have been disabled per arista EOS 11.3

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