Can anyone tell me of the 1531P is fanless? I need POE with management layer2 but quiet.
Yes, it is fanless. From data sheet:
Hardware
The NetVanta 1531P is a desktop, wall mountable
or rack mountable PoE switch with a fanless design
ensuring quiet operation. It provides 12 Gigabit
Ethernet ports, consisting of 10 fixed 10/100/
1000Base-T Ethernet ports and two 1.0 Gbps SFP
ports. Together the two SFP ports can provide up
to 4 Gbps of bandwidth between interconnected
NetVanta 1531P switches.
Note that only eight of the ten copper ports are PoE, so 8 x PoE copper + 2 non-PoE copper + 2 SFP.
As noted above the 1st 8 ports are the only ones that have PoE. Now depending on your PoE budget you may find yourself limited.
Total Power: 65.0W
Total Power Used: 0.0W
Total Power Available: 65.0W
Average Total Power Used: 0.000W
For a new device to be powered, there must be at least 19W available power.
To power a Class 4 device, there must be at least 30W available power.
'Limited' status is only valid for PoE+ devices that negotiate power using LLDP.
It is indicated when the requested power of the PD is not met.
Interface Admin Status Power Class
(Watts)
----------------------------------------------------------------------------------
giga-swx 0/1 auto Searching 0.000 N/A
giga-swx 0/2 auto Searching 0.000 N/A
giga-swx 0/3 auto Searching 0.000 N/A
giga-swx 0/4 auto Searching 0.000 N/A
giga-swx 0/5 auto Searching 0.000 N/A
giga-swx 0/6 auto Searching 0.000 N/A
giga-swx 0/7 auto Searching 0.000 N/A
giga-swx 0/8 auto Searching 0.000 N/A