Some random plugged a loopback into our new 16 port unmanaged switch. For 4 hours our entire internal network was down. Nobody could work. We lost a lot of money, my bosses are furious at themselves. I don't understand the situation, what did they fuck up?
A lot of network switches purposefully shut down if you unplug things so you can't fix them easily and are forced to do an expensive service call or keep one key employee around who set it up that way for job security.
Isaac James
I know nothing about networking, but this caught my interest. What cause the service to be available again, or did it just ""fix itself"" after a few hours?
Carter Butler
But why did only our internal network come to an halt? Internet was just fine.
Well, its an unmanaged switch with no settings at all other than to distribute ip's from the networks routing tables?
Literally unplugging the cable. (See example in op pic). But then in a rack with a lot of hardware.
Benjamin Hill
Any switch without loop protection prevention measure with fuck up the network.
Just how it goes.
>The loop createsbroadcast stormsas broadcasts andmulticastsare forwarded by switches out everyport, the switch or switches will repeatedly rebroadcast the broadcast messages flooding the network. Since the Layer 2 header does not support atime to live(TTL) value, if a frame is sent into a looped topology, it can loop forever.
>Work in factory >Industrial network on plant floor >Had intermittent network issues for about a month until we discovered some bored Retard found an ethernet cable and plugged it into a loop. Just disable unused ports. If someone needs one have them fill out paperwork to use the port.
Juan Cox
This is the board for saying MY PREFERRED BRAND IS BETTER THAN YOURS and circlejerking over manchild cartoons and aesthetics of technology you don't understand. I'd point you to better boards, but I don't want them flooded with morons from Jow Forums.
Lincoln Gutierrez
about 3 or 4 years ago someone bored did that in my company in one of the conference rooms, connecting two publicly available slots with one cable almost 1000 people in two buildings were without the internet for most of the day oh and we work on remote desktops only, fun times
One time one of the faggots in my old office did this on a cheap switchand took down a good part of the network. When I walked over and seen it, I asked them why they done it. They said they just liked the flashing lights on the front of the switch. Fucking morons, people like this are why Crapple is not yet bankrupt.
>giving random people access to datacentre/infracstructure hardware
Brody Diaz
even the Network+ taught me what STP is guess CompTIA isnt as much of a meme
Cameron Nguyen
I get that it's easy to create a loop with 2 switches without STP, but wouldn't even a dumb switch realize it's talking to its own MAC address?
that usually resorts in people unplugging used ports or doing other retarded shit
meh, it's fine for connecting a few workstations and a printer or something at the edge of the network
Jonathan Rodriguez
An unmanaged switch is not acceptable in any production environment.
Jason Howard
that's all fine and dandy if you work in an environment where your colleagues and bosses aren't retarded, which is nowhere
Christopher Campbell
It's fine in environments where physical access is locked down, like IP cameras or isolated ICS workstations if you configure layer 2 whitelisting or static CAM tables. Managed is still preferable, of course.
Andrew Hall
>Using unmanaged switches for wall jacks >Not having spanning tree enabled.
Yall played yourselves. Should have spent the money on a real switch to begin with.
Colton White
That's what you get for using cheap, shitty unmanaged switches. I find it really hard to believe any company would use one though, I call LARP.
Jack Cooper
>we lost money that could have easily been avoided by spending just a little more on better hardware, specially since we know we work with retards Haha
Austin Scott
this is how Dmitri got banned from University
Mason Watson
It's a physical loopback.
Charles Taylor
>Spanning Tree Protocol Protocol
Tyler Kelly
We call them the "go home" adapter. Boss sends you home with pay. Good for those spring days.
Angel Bennett
Sounds like something I would do
Bentley Hernandez
user, literally 90% of companies in the world run on unmanaged switches. Only tech companies care.
Ian Ward
>have an unmanaged switch at work under my desk plugging in some end devices >decide to do exactly this for shits and giggles >everyones internet goes down holy shit
Oliver Thompson
The loop causes a broadcast storm which overloads the switch. Basically RAM fills up, the CPU gets hammered, and packets start dropping.
Henry Murphy
You think that's bad... A former coworker had to explain to a real estate company why you can't daisy-chain consumer grade unmanaged switches.
Sebastian Ross
Jow Forums really is 90% freshmen entry level I.T. faggots.
good grief
Carter Torres
Most people on Jow Forums are NEETs or kids from /v/ that insist they know anything about computers.
Cameron Diaz
Let me guess: the power of Linux? Microsoft Windows 10 doesn't have this problem.
A Switching loop or bridge loop occurs in computer networks when there is more than one Layer 2 (OSI model) path between two endpoints (e.g. multiple connections between two network switches or two ports on the same switch connected to each other). The loop creates broadcast storms as broadcasts and multicasts are forwarded by switches out every port, the switch or switches will repeatedly rebroadcast the broadcast messages flooding the network. Since the Layer 2 header does not support a time to live (TTL) value, if a frame is sent into a looped topology, it can loop forever.
Angel Martinez
wow is that word for word from the CompTIA textbook?
Hunter Allen
lol if you think an unmanaged switch running Microsoft Windows 10 is a thing that exists in reality
Levi King
> the power of Linux? Microsoft Windows 10 doesn't have this problem > L2 switch You're so fucking dim, your fellow street shitters won't let you sit near them.
Michael Perry
I believe he meant the copy and paste
Which was through android
Jaxson Brooks
>L2 switch
is it wrong to say layer2 switch? i mean switches are only in layer 2 so.....
Leo Cooper
>But why did only our internal network come to an halt? Because no STP
Kayden Scott
There are L3 switches retard.
Brandon Peterson
then its a layer 2/3 switch aka a router. faggot
Levi Martinez
I did this at my high school when they where doing grading, big fun IT was pissed.
Dylan Nelson
What's that spatter on the wall, OP? Did your wife get a little too excited on family brapp night?
Eli Sanders
I work at a tech company, and our network infrastructure consists of one WLAN router in each of our two offices. No one in the company could tell you the difference between a network switch and an ethernet hub, I guess most wouldn't even visually recognize a switch.
Julian Foster
I take it that's the networking equivalent of installing Gentoo?