For what it's worth, we have ePMP AP's fed by an Apex Lynx and don't
have an issue.
One thing that has bitten me was the performance issue with the last 1
or 2 ethernet ports on RB1100/1200. On the 1200 I could definitely see
you getting 3 meg and pulling hair out trying to figure it out.
If Jordan has more specifics details about the setup to share, then
maybe it will ring a bell with somebody.
------ Original Message ------
From: "George Skorup" <[email protected]>
To: [email protected]
Sent: 8/20/2016 6:32:26 PM
Subject: Re: [AFMUG] New to list - issues (i think) with ePMP 2.4
That was both of us. And that's definitely the ethernet buffer issue on
the ApexPlus OMU. And I still can't fix it on HW ID 1 OMUs because
loading 3.1.5 will cause loss of in-band management (IBM doesn't
respond to ARP). 3.2.0 on the HW ID 2 works fine. And yes, the buffer
issue was much more noticeable on downstream 5ms framed radios.
Enabling flow control made the packet loss worse and did not improve
throughput anyway.
I wonder if Jordan's problem could be a similar issue with the Mimosa
B5's? When I was debugging the Trango problem, I could go to the towers
and plug in with my laptop and pull 100Mbps no problem. Before we knew
about the buffer problem, we tried replacing Rocket PTPs with ePMP and
throughput improved. Then we got ePTP mode which is 2.5ms framing and
throughput got even better. Then the buffer issue was sorted out and I
was able to completely max out the ePTP links.
On 8/20/2016 4:32 PM, Ken Hohhof wrote:
I also seem to remember someone in my area like Nate or George posting
about problems with a Trango Apex Plus backhaul feeding an ePMP sector
and getting low throughput but not seeing the same problem with a 450
sector on the same backhaul. If I remember correctly they were kind
of pointing the finger at Trango, athough from the symptoms I wasn’t
sure that was clear since the 450 seemed to deal with it better. I’m
not sure if the OP had a router between the backhaul and the APs, or
just a switch.
From:Josh Luthman
Sent: Saturday, August 20, 2016 4:26 PM
To:[email protected]
Subject: Re: [AFMUG] New to list - issues (i think) with ePMP 2.4
I posted. Referred to Justin's issue from Wispamerica time frame.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Aug 20, 2016 5:23 PM, "Ken Hohhof" <[email protected]> wrote:
I think some of the comments about GigE interfaces might have been
misunderstood. I suspect whoever posted those was talking about a
situation where traffic gets bursted over one link and overflows the
buffers in the next device.
Also I would ask what hardware on the Mikrotik routers. I remember
having a problem with a Maxxwave ATOM box if I had a GigE interface
running at FastE (because the radio interface was only 10/100), it
would exhibit severe packet loss. Downgrading to 5.x firmware fixed
that problem. I think that was also some kind of interface buffer
issue.
From:Chuck McCown
Sent: Saturday, August 20, 2016 4:09 PM
To:[email protected]
Subject: Re: [AFMUG] New to list - issues (i think) with ePMP 2.4
I think he has done that and it is AP to SM or AP to router that is
the problem.
From:Bill Prince
Sent: Saturday, August 20, 2016 3:07 PM
To:[email protected]
Subject: Re: [AFMUG] New to list - issues (i think) with ePMP 2.4
Then break it down. Put a mikrotik at the end point, and run tests
from there to all the intermediate points. Isolate the segment (or
segments) that are causing you grief.
bp <part15sbs{at}gmail{dot}com>
On 8/20/2016 11:43 AM, Jordan Gregory wrote:
So here are the things i've tried.
Both my main Netonix Switch and the microtik switches has flow
control turned on. I disabled it and actually, if possible, the
speed got worse. So i re-enabled it.
I'm still unable to pass more the 3Mbps anywhere though.
I've been able to replicate this on every sector now. It has to be
something upstream from the access points, but I'm just not sure
where to look at this point.
Thank You,
Jordan Gregory
Founder / CEO
Hive Wireless, LLC
On Thu, Aug 18, 2016 at 10:50 PM, Jordan Gregory
<[email protected]> wrote:
Tik switch at the tower had flow control enabled on all ports. I
have disabled it now. Customer is asleep now i'm sure, so I can't
have them check. But I'll know more in the morning. This was
happening on all SMs though, so I may fire one up just to see.
Thank You,
Jordan Gregory
Founder / CEO
Hive Wireless, LLC
On Thu, Aug 18, 2016 at 10:46 PM, Jordan Gregory
<[email protected]> wrote:
They aren't airfiber, they are Mimosa B5s
Microtik routers/switches.
I didn't enable flow control, but i'll double check
Thank You,
Jordan Gregory
Founder / CEO
Hive Wireless, LLC
On Thu, Aug 18, 2016 at 10:43 PM, George Skorup
<[email protected]> wrote:
What is all of the equipment involved? Have you looked for CRC or
FCS errors on any ethernet links? Unfortunately, the ePMP gear
does not have ethernet CRC errors stats. What about flow control
on your GigE interfaces?
Have you ran iperf from behind the SM all the way through to your
router?
You say 750Mbps. Are they AirFiber radios? Flow control is what
comes to my mind there. If you have flow control enabled
anywhere, turn it off and see if end-user speed increases. We
don't use it because pause frames cause jitter for VoIP.
On 8/18/2016 10:34 PM, Jordan Gregory wrote:
Everyone,
I enabled the MIR profiles and set the one I am talking about to
25000/5000, the link test shows this speed perfectly, except
when we do a speedtest via speedof.me or speedtest.net or
anything really, it's only showing 3Mbps.
I have a cambium support ticket open, but that may take a while.
I've dug through every setting I can find and can't see anything
that would be causing this.
Here is the generic layout of my network:
SM --><-- AP --> L3 Switch --> BH Radio --> <-- BH Radio -->
Switch --> Router --> Internet
I've tested the speed (iperf) all the way from my router to my
l3 swtich at the tower and I'm getting roughtly 750Mbps avg to
the l3 switch. I've tested throughput on the switch as well and
I was easily passing 5Gbps through it.
I've seen no speed mismatch errors anywhere on the network.
Thank You,
Jordan Gregory
Founder / CEO
Hive Wireless, LLC
On Thu, Aug 18, 2016 at 11:05 AM, Kerry <[email protected]>
wrote:
Here's a couple things to check,
Check the ap, is MIR under QOS enabled? if so, there should be
an entry under monitor->wireless for the sm showing the rate
the sm is 'queued' at.
The wireless link test will only show it passing roughly what
it is queued at. Also, check the MCS column. If it;s a good
link it will be at the max Rate setting configured
under the radio config of the ap
On 8/18/2016 11:46 AM, Jordan Gregory wrote:
Good day list,
I have a Force 200 operating at very good signal levels but
for some reason, I can seem to get any more than 3Mbps out of
the connection.
Did i miss a setting somewhere?
Backstory: Brand new wisp
Thank You,
Jordan Gregory
Founder / CEO
Hive Wireless, LLC
