this post was submitted on 23 Jan 2025
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Ghost ports (lemmy.world)
submitted 1 week ago* (last edited 1 week ago) by [email protected] to c/[email protected]
 

In the middle of a live VLAN readressing of a 200-node company, I encountered this gem. The ports just kept blinking on even after plugging out the cables. (HP aruba 24 port switch)

One turned off after a reboot.

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[–] [email protected] 145 points 1 week ago* (last edited 1 week ago) (4 children)

The lights are combined link/act, not separate link act. left for upper side, right for lower side. 2 and 4 are blinking, 1 and 3 (the empty ports) are not.

[–] [email protected] 81 points 1 week ago (1 children)

This guy networks.

The lights are even labeled...

[–] [email protected] 10 points 1 week ago (1 children)

client had 2 near identical switches, one had LEDs on each port, one had LEDs all on top, I was looking at each port wondering why they weren't lighting up and thinking they were disabled in admin panel. took me a few minutes, I was an idiot that day.

[–] [email protected] 4 points 1 week ago (1 children)

By the authority conferred to me through the “ownership” of approximately 25cm^2 of Scottish highland from a well-intentioned holiday present, I’m invoking my right as a Lord to grant you a pass on that one.
It would take me a few minutes, too

[–] corsicanguppy 3 points 1 week ago (1 children)

As a Glencoe lord I support this.

[–] [email protected] 2 points 1 week ago

The council has spoken.

They may go forth, unburdened.

[–] [email protected] 12 points 1 week ago (1 children)

So #5 is disconnected on the other end, right?

[–] [email protected] 7 points 1 week ago (1 children)

Yes, or the systems etc. Or the port is disabled if the switch has the ability.

[–] [email protected] 1 points 1 week ago (1 children)

Could've also just caught the photo in a flash of down activity depending. Still tho.

[–] [email protected] 3 points 1 week ago

It's a gif and the LED is permanently off.

[–] [email protected] 4 points 1 week ago (1 children)

Port 4 is slightly pulled out, you can see the cable difference between 2and4. which I think is what OP was getting at.

It's probably touching just enough pins to keep active

[–] [email protected] 4 points 1 week ago (1 children)

It doesn’t seem to be, they look like different cables, look at the strain relief after the clear part, looks like a different pattern and shorter. They are probably both fully seated.

[–] [email protected] 2 points 1 week ago

Hmm maybe I was wrong. Either way I think we can both agree this is everything just working normally...

[–] [email protected] 1 points 1 week ago

Really? I've never seen that. In my experience, those labels are for the ports themselves, not the lights.