Unmanaged switch horror stories
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We have a bunch of little 5 port switches at each desk (for more ports). They are mostly unmanaged, but a few are the netgear smart switches. We had port mirroring set up on one, and guess who grabbed it by mistake and plugged it in at a new employee's desk? Talk about a 3 minute panic. After that incident, I carved "port mirror" into the top of it (I didn't bother resetting it because I knew we would need it as is for a project soon".
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This is the kind of set up that has burned me. Cord getting kicked is one thing. Cable looping around and creating an network loop is another. Remotely you ask them if the lights are on, and they sure are!
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@Mike-Davis said in Unmanaged switch horror stories:
This is the kind of set up that has burned me. Cord getting kicked is one thing. Cable looping around and creating an network loop is another. Remotely you ask them if the lights are on, and they sure are!
Yeah, that's not an issue with unmanaged switches, that's an issue with switches in the wrong place, bad physical access controls, consumer switches, bad cabling.... that the switch is unmanaged is a red herring here.
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This is a business class unmanaged switch. It's still rack mount, it's still high quality, you still don't make a mess of the cables. But you don't spend time managing STP or VLANs.
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@scottalanmiller said
Yeah, that's not an issue with unmanaged switches, that's an issue with switches in the wrong place, bad physical access controls, consumer switches, bad cabling.... that the switch is unmanaged is a red herring here.
OK, so we can agree cheap switches outside of the closet are a bad idea.
The discussion came up because we were copied on an email from one user to another where they told the user to run out and get a cheap switch so they could hook up their network printer and their computer.
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Unmanaged switch being readied at NTG North Texas office.
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@Mike-Davis said in Unmanaged switch horror stories:
@scottalanmiller said
Yeah, that's not an issue with unmanaged switches, that's an issue with switches in the wrong place, bad physical access controls, consumer switches, bad cabling.... that the switch is unmanaged is a red herring here.
OK, so we can agree cheap switches outside of the closet are a bad idea.
The discussion came up because we were copied on an email from one user to another where they told the user to run out and get a cheap switch so they could hook up their network printer and their computer.
Well yes, bypassing IT for any purchasing, especially core infrastructure, is ridiculous.
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I have a customer about 1.25 hrs away.
I had been helping troubleshoot an issue. I fixed that with my remote hands onsite.
Then...
They called and said that their computers were intermittently unable to access the domain. They still had Internet access but all internal network systems were unavailable, and then available again.
I pulled up my screenconnect console and looked at the gateway IP address they had. It looked correct.
I remoted in, and then quickly noticed the devices were connecting and disconnecting. I tried to ping the gateway and I would get a response. Sometimes it was the firewall (the correct gateway) and other times it would be the CPE modem from TWC. (The wrong gateway)
Thought to myself this is impossible. All traffic goes into the firewall and is tunneled. The CPE modem is always invisible to this computer.
That is when I realized while troubleshooting something else in the office the set of onsite hands created a Loop on the network. I specifically said what to connect and not to. But they misunderstood. And didn't say anything.
That was a very fun time as I got to experiance that. And figure out what happened and how to fix it.
Love IT work!
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@Mike-Davis said in Unmanaged switch horror stories:
@scottalanmiller said
Yeah, that's not an issue with unmanaged switches, that's an issue with switches in the wrong place, bad physical access controls, consumer switches, bad cabling.... that the switch is unmanaged is a red herring here.
OK, so we can agree cheap switches outside of the closet are a bad idea.
Any switch outside of a closet is a bad idea.
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@scottalanmiller said in Unmanaged switch horror stories:
@Mike-Davis said in Unmanaged switch horror stories:
The discussion came up because we were copied on an email from one user to another where they told the user to run out and get a cheap switch so they could hook up their network printer and their computer.
Well yes, bypassing IT for any purchasing, especially core infrastructure, is ridiculous.
Right, this has nothing to do with the type of switch.
