this post was submitted on 23 Jan 2025
99 points (74.9% liked)

Sysadmin

9056 readers
35 users here now

A community dedicated to the profession of IT Systems Administration

No generic Lemmy issue posts please! Posts about Lemmy belong in one of these communities:
!lemmy@lemmy.ml
!lemmyworld@lemmy.world
!lemmy_support@lemmy.ml
!support@lemmy.world

founded 2 years ago
MODERATORS
99
Ghost ports (lemmy.world)
submitted 3 months ago* (last edited 3 months ago) by westo232@lemmy.world to c/sysadmin@lemmy.world
 

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.

you are viewing a single comment's thread
view the rest of the comments
[–] some_guy@lemmy.sdf.org 21 points 3 months ago

The ports are numbered with arrows. Port one’s LED is on the left, port two is beneath port one and has its LED on the right. The two blinking above open ports are for even-numbered ports that are actively plugged in on the bottom row. I dunno why the LED for port five isn’t blinking; maybe the other end of the cable is connected to a device that is powered off.