Forum Discussion

engravosaurus

Aspirant

Dec 15, 2015

Solved

why does FS105 have / need an IP address

newbie query have a FS105 and it has an IP address why does this switch need an IP address? thank you

Hardware

Solutions

engravosaurus
Dec 17, 2015
thanks
am on Mac OS El Capitan
tried ipconfig but I guess the Mac version does not include /all
router is leased from Whidbey Tel and they do permit end users to log in to the router

but
riddle is solved

I crawled up into the ceiling, unstrapped the ADT Pulse Gateway, turned it over, and what did I find
in teeny tiny letters "by Netgear of California" with a MAC address that matches
so

when Fing, etc report IP and MAC by Netgear, they are correct
they are referring to the ADT Pulse device, NOT the Netgear switch

so riddle is solved, thank you all

JohnRo

NETGEAR Employee Retired

Dec 15, 2015

Hello engravosurus,

Welcome to the community!

The FS105 is only a pass-through switch therefore, it does not need an IP. It could be that the IP address that you are seeing is assigned to the first device connected to it. All it does is to forward packets by remembering MAC addresses of the devices which transmit and request packets. For more information, please click here.

I hope the information helps if you have more questions the community is happy to help.

Thanks,

engravosaurus

Aspirant

Dec 16, 2015

thank you

netgear has 3 cables

1 input from a linksys switch

2 output to jack in the storage room which is empty

3 empty

4 empty

5 to ADT alarm systemwifi

DaneA
NETGEAR Employee Retired
Dec 16, 2015
Hi engravosaurus,

Is the Linksys switch a manageable switch? If yes, then possibly the IP address you see belongs to the Linksys switch.

Regards,

DaneA
NETGEAR Community Team
- engravosaurus
  Aspirant
  Dec 16, 2015
  so I unplugged the ADT alarm wifi device
  then the Netgear IP went at away
  perhaps the IP belongs to the ADT device but the system cannot figure that out so assigns it to the last thing it recognizes
  - JohnRo
    NETGEAR Employee Retired
    Dec 16, 2015
    Hi engravosaurus,
    
    Just like what I have thought, did your router list the IP with the FS105's MAC? It could be having a hard time recognizing the devices plugged in to it or probably have something to do with the other switch which feeds the FS105.
    
    Let us know if you have more questions.
    
    Thanks,
- engravosaurus
  Aspirant
  Dec 17, 2015
  newbie but I think not manageable