How to find which switch port is associated with a particular outlet

Mark Phillips mark at phillipsmarketing.biz
Wed Dec 18 16:35:51 MST 2019


What would turning off the switch accomplish? If the roku is wired or
wireless, it would still stop working.

I looked into arp, and can't see how it can tell me the port number on the
switch. Here is what it shows for the roku device:

192.168.25.204           ether   00:0d:4b:d2:14:a4   C
enp4s0f2

Mark

On Wed, Dec 18, 2019 at 1:38 PM Stephen Partington <cryptworks at gmail.com>
wrote:

> MAGIC!!!
>
> Try turning off the 24 port switch? also, look into ARP and see if you can
> identify the MAC address on your network.
>
> On Wed, Dec 18, 2019 at 1:30 PM Mark Phillips <mark at phillipsmarketing.biz>
> wrote:
>
>> I have an old Netgear JGS524E switch. I am trying to map out where all
>> the wires go. I have a remote roku device that gives me the assigned IP and
>> MAC address, and it says it is a wired connection. However, the switch only
>> has a rudimentary web gui, and there is no show mac-address function. It
>> would take some effort to remove the roku/TV from the wall to disconnect
>> the network cable, so I was hoping there is some clever way to find out
>> which switch port that roku device is connected to.
>>
>> I tried a process of elimination to map all the other lines back to the
>> switch, and all of the lines are accounted for...which means the roku is
>> not connected to the wired switch. But the interface says it is connected
>> to a wired port, so I am at a loss to say which port goes to that device.
>> The roku works even when I turn off the wifi routers....
>>
>> Thanks!
>>
>> Mark
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>
>
>
> --
> A mouse trap, placed on top of your alarm clock, will prevent you from
> rolling over and going back to sleep after you hit the snooze button.
>
> Stephen
>
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