B5 ethernet bouncing up and down


#1

I’m out of ideas and I’m open to suggestions. My B5 ethernet bounces up and down at least once a minute. I already replaced the cable twice… I have no idea where else the issue would be. Anyone have any ideas?


#2

Hi Christopher,

Here is a link to our Ethernet troubleshooting guide: http://backhaul.help.mimosa.co/backhaul-troubleshooting-guide-ethernet

Please follow those steps, and come chat with our Support team at http://backhaul.help.mimosa.co so we can provide further assistance.


#3

We have had the same problem with a few of our b5. We have only found the problem on the ones that we are using the tycon power DC POE with cable runs of more than about 75feet. They don’t put out enough amperage. Switched them from DC POE to the AC ones supplied and they work like they are supposed to work.


#4

Are you near any FM transmitters? We’ve seen the same at locations that have high FM transmitters, and hardcoding to 100Mb/FD on both sides will stabilize it. Not the best solution, but works. Also using quad shielded cat5e with baluns at about 18" spacing on the first and last part of the cable will help if it is FM. Be sure to have a wireless station on the tower that you can use to “get into” the Mimosa if you lose ethernet connectivity. We keep a PicoStation on each tower in station mode that is used as a connection client to the Mimosa wireless admin signal incase we lose ethernet access. At least we can get into the radio wirelessly, and reset the ethernet settings from the NOC.


#5

I saw similar results after deploying a B5 Lite last week. It was connected into a Mikrotik running ROS 6.14, upgrading this appears to have resolved the issue.


#6

I replaced the POE injector and that seems to have solved the problem.


#7

We had the exact same troubles. Was making me so mad. If you are using the tycon power DC POE. Make sure it is the VHP model. The HP model puts out half the amps that the VHP does. I can’t find and 12-56volt but they make 24-56. We have switched all 20 plus links to 24 volt with those bad boys and have had ZERO issues since.


#8

I put up 4 B11 links last week and am having the Ethernet port flapping on every one of the radios. The POE is the one supplied with the radio. How do I tell if I have a Tycon power supply, it says “Mimosa” on it and is the same POE that came with the B5c radios I ordered at the same time? What other manufacturer POEs have others tried? Best place to get them?
Thank you,


#9

I replaced mine with one from StreakWave. I’m not sure what the specific model was. Just make sure it meets the same specs. The voltage of the one I bought was adaptive.

They’ve been working pretty well since. I had one instance where the B5 locked up for some unknown reason. I did a hard reset (unplugged the injector) and it came back up.


#10

Hi

I am having the same problem with Ethernet port on one of the units.
When enabling unit to sync on 100Mbps Auto-Neg (disable 1Gbps option from Auto Neg list in the switch/pc), the port is working well (no more port bouncing) but we must find solution for this (need more throughput :slight_smile: )

Please help

Tnx


#11

Hello Ace
original mimosa have very bad POE Adapter and ethernet controller is not good. your problem can solved with UBNT POE-50-60W 50VDC@1.2A! Mimosa is good Product but idont buy more. Problem is Eth and Controller!! moment we have 2500 nanostation M5, 1200 Mikrotik sxt and 3 full link from Mimosa i like to change nanostation to mimosa C5 client but i stoped this aktion.
have nice day my frends


#12

Hi Christopher,

I am from Malaysia and replacing the PoE to 802.3at Standard without buildin surge protector do solve the problem. Believed its due to ground looping where the antenna grounding and PoE grouding are terminated to the very same bus bar and its common in my country.


#13

Ace, That sounds like a cable issue, not a POE issue.


#14

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2016-12-30 20:26:48 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:26:51 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:26:51 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:26:54 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:27:02 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:27:04 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:27:11 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:27:12 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:27:18 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:27:20 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:27:24 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:27:28 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:27:32 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:27:35 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:27:40 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:27:42 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:27:46 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:27:48 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:27:52 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:27:54 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:28:03 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:28:07 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:28:12 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:28:15 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:28:16 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:28:18 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:28:20 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:28:22 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:28:25 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:28:29 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:28:35 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)
2016-12-30 20:28:38 (UTC +0000) root: MIMO_EVENT ethernet link down
2016-12-30 20:28:40 (UTC +0000) root: MIMO_EVENT ethernet link up (10/Half)


#15

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#16

Todays issue with an A5c, Factory PoE, Mikrotik 1100ahX2, on 200ft of Shreen Gel tape ethernet.


#17

@Chris

Installing a 1Gbps switch in between the PoE adapter and the Mikrotik solved the issue!

None of the ports flap with the switch!


#18

That’s great. This is an item already in our Ethernet troubleshooting guide. The third-party switch in the middle isolates Mimosa and router Ethernet PHYs since they each negotiate with the switch independently, bypassing the apparent interoperability issue.


#19

Ok, So I guess i should have added the fact that it is installed per Mimosa Specs to the first post! Because the Troubleshooting Guide basically tells you how to install it properly.

It also states to add a switch in the loop as we have already done, I hope this is not the Answer.

My current choices to make it work is lock it at 100Mbps or use a switch in the loop to get 1000Mbps.

We have connected just about every other brand of equipment to Mikrotik equipment and never had an issue with port flapping thus I am looking at Mimosa as the issue here.

So what is the next move?


#20

We Had the same issue with every Mimosa Device that went from a POE injector to our Mikrotik Routers. The best way we have been able to “fix” the issue is by using a Netonix WISP Switch at each of our towers. Since its a managed switch you can vlan the ports on the switch to isolate them into essentially being a managed midspan POE injector. Its not the cheapest solution as the Netonix switches are kind of expensive but I do like the added functionality the switch gives us by being able to watch throughput, power consumption, as well as being able to power cycle each port on the switch.