Posted on May 14, 2014 2:23 pm
 |  Asked by Thomas Thomas
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I am trying to install splunk in a VM om my old Arista DCS-7120T-4S-F. I have followed the instructions in the Integrated traffic pdf but after enabling my VM I get this error message when I exit config mode:

% Failed to start VM: at line 51: Entity ‘raquo’ not defined


What on earth does that mean?



Posted by Lincoln
Answered on May 15, 2014 4:53 am

Hi Thomas,

It sounds like you’re following some instructions that are pretty old and something that is pretty much replaced. While we demonstrated the ability to run things like Splunk inside a Guest VM on an Arista switch as part of a technology demonstration with Splunk in Jan/Feb last year, that was really about demonstrating the extensibility of Arista EOS and not a recommendation to run something like the full Splunk Server on a switch or in a Guest VM.

That initial demonstration has been replaced by the more recent Splunk Extension for Arista and where we run a Splunk Forwarder on the switch of which you can read about the details at and see in the video at

All that said, I suspect the root cause of the error you’re getting is a typo you have in the xml file (at line 51) defining the Guest VM. But even if that was not the case, due to the fact that the switch you’re using – an Arista 7120T-4S – is pretty old, a little over 5 years old I think – and with much less RAM and Flash than anything shipping in the last few years. It has 2GB RAM which isn’t really sufficient to run that much.

Unfortunately too the same holds true for the newer Splunk Extension and Splunk Forwarder. Its not likely that a switch with 2GB RAM is sufficient to run it either.  Or: it may run for a bit, but you’ll be essentially out-of-memory and that won’t result in a good experience.

So – unfortunately – the bad news is that there isn’t any meaningful way you can run any of these things on the switch in question. Sorry.

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