03-18-2024 05:39 AM
Dear Team, We are having POE Pds and the Team is looking to connect the POE PD devices in Ring topology.
1. Is the POE PSE ports are one to once connection or possible to connect multiple PDs into one PSE
2. Please suggest POE PSE support Ring topology..
3. Does Cisco have Non standard POE switch to suggest for this ring topology
03-22-2024 02:47 AM - edited 03-22-2024 03:00 AM
1) POE -> you mean Power over Ethernet, right ?
I do not think there is such a thing as a ring-topology for PoE
a ring topology is possible for data using PoE switches but not for power
if you connect two PoE switch ports together, they will not supply power to each other!
Cisco offers some switches that can both be powered using PoE on an uplink port
and supply a smaller amount of PoE power to a downstream device on a downlink port (PoE-in PoE-out)
but here also available power decreases in each step
so the number of devices in a chain is very limited. And a ring I don't think it's possible.
2) what kind of devices are you planning in this ring
are these all network switches?
or mixed switches, phones, access points, camera's..... -> this will not work in a ring
3) what do you mean with "non standard" ?
Cisco switches support PoE according to 802.3af at bt and other standards (48V or higher)
Cisco switches also support pre-standard PoE
but do not support PoE for non-standard devices bases on their own 12 or 24V PoE injectors
03-24-2024 12:57 AM
Hello,
I guess it would be helpful to provide a schematic drawing of the topology you are trying to create, as it is not really clear what 'POE ring' means in this context.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide