POE swtitch success

Has anyone successfully connected canopy devices to a POE switch and got it to work? I have tried endspan and midspan with no luck. I also tried making a double crossover ethernet cable just incase the polarity was wrong… still no luck. Anyone?

Canopy does not use standard POE, so it will not work without some degree of tweaking. I’ve not tried this myself, and I do not recommend you try it on good equipment, but I’ve been meaning to experiment with switching 4,5 and 7,8 on one end of a piece of ethernet cable, and testing it that way. That takes care of the reversed polarity, but I’m still not sure if Canopy gear can handle the 48vdc, since they seem to be design for a 24vdc ps…

If you experiment, let us know what you find…

I think I read somewhere that it’ll work from 9vdc to 36vdc. I tmay have been another one of Jerry’s posts. Jerry can you confirm this?

Spec is 12 - 36V

48 will be a problem.

There are POE switches out there that let you use an external power supply for the POE, but I can’t find it.

I have found this, but never used
http://www.packetflux.com/index.php?mai … ducts_id=3


Anybody try this PACKETFLUX products ?

I have used PacketFlux products. Particularly on a tower that is two hops from one of my CMM Micros. I can’t see a good reason to get on for timing on only one BH and an AP or 2 or 4… so I use PacketFlux and their Pipe Syncs. I have used the sync injector (pictured in the link above) and it works ok. you get 8 ports (4 effectively as the top port goes to the canopy unit and the bottom is a passthrough to be connected to a switch). I have had them blow rather easy at times in storms but they have recently been coming with better PSUs. I have talked with Forest (head of Packet Flux) and they have new units coming out that will support more ports. I mainly use a canopy brick for power and use a pipesync at the top of the tower with a sync splitter to time the units. They have stabalized our network quite well as the timing over one hop was not working very well for me. Once I threw these puppies in the re-registers stopped.

I wanted to add, I have had a few problems with some APs loosing the ability to recieve sync over the power port. This is a statement to further explain my use of pipe syncs (they time over timing port) as well as a question to ask if anyone else has had such an issue. I believe it usually happens during a storm, but it doesn’t stop ethernet traffic, only stops the ability to receive sync over power.

As I can see the only way to see the syncpipe status is the serial cable.
Did somebody try to put the serial to TCP IP convertor and see the status of the syncpipe via network?

I have never used that, nor have I even connected via serial. However, if the sync injector is getting a good sync pulse, one of the red leds on the front will blink at a constant rate. For the record, I have never had a sync issue with these.

I have used packetflux as we… They work very well. However I have had them die/blowup too but its been atleast 6 months now since I have had one die.

What was the reason for the syncpipe dieing?

I have only had one sync pipe die, and that was lightning- took out more than that as well…

The sync injectors have died on me a few times for no known reason. A few were bad grounding which was fixed and the others I couldn’t figure out.

One thing I should also mention, if you use a sync injector as a power source only, know that I have tried that and had bad experience with power outages. It seems that when the sync injector turns on without a pipe sync hooked up to it, there will be problems (it will hang and not pass traffic). I try to time anything that is not on a CMM through the timing port to avoid the sync over power problems I have had. Therefore, it is tempting to use the sync injector as a power source in a box rather than using 4 or more power bricks, unfortunately it has not worked.

**So, if your tower and equipment is well/properly grounded (as it should be anyway) and you are using a pipe sync as timing, you will most likely be very satisfied with the use of packetflux stuff. Remember, shielded shielded shielded- and the shorter your cable run from the syncpipe to the sync injector the better.

Yeah figured as much on the grounding and everything.

I’ll talk with you via PM to not drag the thread off.

I have tried to order syncpipe and syncinjector but they say that they dont have on stock the syncpipes.Can somebody tellme what is usual delivery time for packetflux products?
If I need to wait too much I need to buy CMM because motorola distributors allways have on stock this things.

In my experience, it has been around a week or two. Throw them an email or call, They should be able to let you know what kind of wait you are looking at.

Just my 2 cents. I currently use 3 of the 4 products on the market that I know of for sync. Still have some CMM2’s in service also. I have no complaints about the packetflux units, especially considering the price except the fact that their is no remote capabilities to the unit. Sometimes you need to power cycle a radio. I normally only use syncpipe’s on smaller POP installs.

My biggest issue with the CMMmicro is the integrated so called managed switch, and the fact that if the GPS fails everything looses sync unlike the packetflux that will still provide sync to the radio’s.

I guess I like the Cyclone CTM from Last Mile Gear the best except for cost. This unit allows me to use any real managed switch or router I want. Has a web interface to log into. You can power cycle ports, dual power supplies, tells you the current draw of each power port, will still sync radio’s if GPS fails, and will even email you. Almost forgot the NTP time sent to the radio’s is corrected for time zone. Only draw back is the unit is about the same as a CMMmicro plus the cost of whatever kind of switch you want.

I have seen another unit on the market but can’t recall the name.

how about this, minigps2 from Fddi System?


Yep! that is the other one I mentioned, but have not used. That’s a little steep for only doing sync.

Jerry Richardson wrote:
Spec is 12 - 36V

Are you saying that an AP could be reliably powered by a simple car battery?

I couldn't find any official specification about the AP's voltage ranges.
Where did you found it?


Thats right.

I have tried bringing with me a 15plate battery to power APs. 12v Power inverter is connected into battery.

Battery ===> 12V Power Inverter ===> Adaptor