Is there an OpenWrt-compatible router with a POE injector that can power a POE device?
my current setup at a location is ISP router--- Ethernet-- RPI4 --- Wifi---SLZB-06M--- Zigbee network. but ISP router isn't at home all the time
so need a POE injector and router in the same device. Wifi is an optional feature. SLZB-06M will be used over ethernet in that case.
What device needs to be powered by PoE? What standard does it use (802.3af/at/bt, 24V)?
If the ISP router isn't there, how does the network function?
Mmmh, the only OpenWrt devices with PoE injector ports I know of are some realrek-based switches. These are decent switches, but due to having weak CPUs do not make good routers.
I would consider a PoE switch or a stand-alone single port injector...
EDIT: It seems at least the Mikrotik RB5009UPr+S+IN offers PoE injector ports under OpenWrt in addition to the realtek switches.
It is SLZB-06M and it supports PoE 802.3af
https://smlight.tech/product/slzb-06m/
If ISP router isn't there, it might fall back to binding only
When you are comfortable building an image yourself from source then Mikrotik RB5009UPr+S+IN is a possible candidate (code is ready but not yet merged https://github.com/openwrt/openwrt/pull/15989)
Is your goal to replace the ISP router with a different device entirely? Thus not needing the ISP router at that location (ever)?
I'm a bit confused by your topology... it appears that the SLZB-06M is connected via wifi to your network, and that the Pi is being used as the AP?? Is that correct? How is the SLZB-06M currently being powered?
Is this a hard requirement? Is a PoE injector not an option for some reason?
Currently. It is like this ( I don't have a diagram created otherwise It could be easier to explain).
ISP 5G router(1Lan interface) ---ethernet-- RPI4.
Same ISP router----Wifi 2.4Ghz--- SLZB-06M - - - Zigbee Network
Currently SLZB-06 is powered by USB cable.
What I want do is don't use wifi for connecting to SLZB-06m instead use ethernet for both power and connection as recommended for a stable zigbee network.
Since ISP Router is mobile(movable) and it is used as a travel router as well, so at those times there will be no WiFi router and SLZB-06m can't communicate with Rpi 4 which is running HAOS and Zigbee2mqtt addon.
So I want to create a separate segment (is that a correct networking jargon? ) so even if ISP router is not present, RPI4 and SLZB-06m continue to work without any issue.
That is I am looking for router + POE solution in a single device.
As @ed8 pointed out, RB5009UPr+S+IN does PoE as well and the base model (RB5009UG+S+IN which I own myself) is well supported by OpenWrt. The PoE flavour does not add that much overhead but does require you to build yourself.
@KOA Keep your RPi as an SBC and don't use it as a networking device, you are overly complicating your setup.
RPI4 is only running HAOS(bare metal install) + Zigbee2mqtt Addon. Only networking device is ISP router.
I don't want to spend too much for device.
So other solution is a cheap Openwrt router and POE injector?
Cheap router + e.g. second hand GS1900-8HP.
So the planned setup would look like this?
ISP modem
|
new router
| |
RPi4 PoE injector
|
SLZB-06M
In that case you have several options for a router, i.e. Dynalink DL-WRX36, Cudy WR3000 / WR3000S / M3000 etc
Yes if this is the cheapest solution.
I do get speed upto 150 down over this 5G modem/ISP router.
So I think I would need to buy two T56 routers for both locations.
Or just replace the (not yet bought) "new router" with a PoE switch and configure fixed IP addresses into RPi4 and the SLZ-06M and the zigbee devices (assuming that is necessary and possible). It really depends on whether you get a second hand PoE switch cheaper than a PoE injector and router...
ZigBee isn't a Ip based network. That would be handled by SlZB-06M.
WiFi does give me advantage of adding matter over WiFi and WiFi based sensors such as esphome and shelly devices in future.
You mean ZyXEL T-56?
If so, do note that installation requires serial access.
Yes I am searching for that deal for another location.
Yes serial is fine as long as case is easy to open and header are pre-soldered.
Aha ok, I just wanted to give a small warning because serial flashing took me some time to figure out (see my adventure at [HOWTO] Recovering a soft bricked EAP615-Wall)
I had my share of serial adventures with my Netgear router.
https://openwrt.org/toh/hwdata/aerohive/aerohive_br200-wp
This has PoE out but is not very common and the specs may not be good enough depending on what ISP network speed you have.
I currently have a Watchguard T70 as my main router which has 2 PoE ports but they are part of a dumb switch and require desoldering of a resistor on the board.
https://forum.openwrt.org/t/watchguard-t70-hw-discovery/155544
found on listing