I've had ePMP's do some weird things here and there, like refusing to
reboot or accept config changes. Nothing a power cycle didn't fix.
I've had to power cycle a PMP100 or 450 to fix a problem approximately
zero times.
I know a neighbor who had a tower hit by lightning an ePMP and a
Ubiquiti Rocket died while the PMP100 and 430 stuff kept on chugging (he
didn't have 450 there yet).
450 has a few management conveniences like remote spectrum analyzer, RF
private IP, and SM proxy access via AP.
So overall my experiences say the 450 is better than the ePMP, but I
still use a lot of ePMP for all the reasons others have stated. ePMP is
good bang for the buck.
-Adam
------ Original Message ------
From: "Mathew Howard" <[email protected]>
To: "af" <[email protected]>
Sent: 7/18/2017 10:23:17 AM
Subject: Re: [AFMUG] PMP450 ~50mbps cap
It seems to me (as someone who hasn't actually used PMP450 to speak of,
other than 900mhz), that PMP450 has some advantages for high density
deployments... particularly if you're talking 450m, or even the ability
to easily upgrade to 450m. But in a network like ours, where the
average SMs per AP is somewhere around 15, I just can't see any way
that it could possibly be worth going with 450 over ePMP.
On Tue, Jul 18, 2017 at 8:52 AM, Bill Prince <[email protected]>
wrote:
The PMP450M can make ~~ 12° sectors. On a busy tower, and surrounded
by noisy neighbors, we're often seeing 30 dBm SNR. Nothing else comes
close.
bp <part15sbs{at}gmail{dot}com>
On 7/17/2017 10:10 PM, Steve Jones wrote:
Serious question, not my usual sarcasm, how are you 450 folks
justifying the substantial proce difference between 450 and epmp,
seriously, if you dont freeze in the winter, i couldnt justify it.
Granted we dont sellbover 12\2 and we dont have more than 40 per ap,
i just dont see the value, they did too good a job on epmp
On Jul 3, 2017 12:10 PM, "Craig Schmaderer"
<[email protected]> wrote:
I have never seen more than around 55mbps on 450sm in bridge mode
with any firmware. Maybe I missed a 14.x that it did, but I haven't
seen more than 55mbps on any 15.x firmware. I am working on a bug
with then on 15.1 where it looks like the qos speed limiters are not
enforcing speed settings. I have never tried a 450i sm but I would
assume those work fine, I have many 450i PTP that work great.
--------------------------------------------------------------------------------
From: Af <[email protected]> on behalf of Kurt Fankhauser
<[email protected]>
Sent: Monday, July 3, 2017 8:38:49 AM
To:[email protected]
Subject: Re: [AFMUG] PMP450 ~50mbps cap
The original 450 hardware will max out at around 70mbps TCP. Even if
you have no traffic on it that is the limitation. I don't remember
which firmware it was but the 14.0 something sounds right and I have
personally gotten the 70mbps to a SM on a AP with 3 clients.
Now the 450i AP basically the 70mbps cap is gone and you can get
whatever the link tests show (as long as your testing to an 450i
SM). I have two customers with 450i SM on a 450i AP and have seen
well over 125mbps TCP easy. Now that same AP talking to older
450SM's those SM's can still only get 70mbps max.
So basically what you need to do is put the 450i AP up where you
need to total AP capacity of more than 50-60mbps and then only use
the 450i SM on the clients that need more than the 50-70mbps.
I have not tested speeds since I upgraded firmware to 15.1 so if a
bug was recently introduced I know nothing of it.
On Sat, Jul 1, 2017 at 7:51 PM, George Skorup
<[email protected]> wrote:
Aaron demonstrated some throughput improvements with both NAT and
bridge mode back around 14.2 development. IIRC, they were able to
get a little over 70Mbps downlink in bridge mode on a standard 450
SM. Real TCP throughput, not a link test.
What I was seeing on some of our most heavily loaded 450 sectors is
the AP seemed to max out around 55Mbps downlink and 10-11k PPS. In
that case I'm thinking the issue was simply the PPS limit and not
that the AP was limited to 55Mbps.
As far as the SM, I don't know. Perhaps a regression with 15.x.
15.0.x did have some high-priority issues.
On 7/1/2017 2:25 PM, Craig Schmaderer wrote:
Ok, I have tried to get cambium to publicly admit to this ever
since I started using 450 a few years ago. The current sm in no
way can pass more than about 50-55 mbs of real traffic. This has
never been a real issue however because I don't do those kind of
speed plans. I have been waiting for their new sm design to take
care of this. If anyone disagrees with me I would love to chat.
(Really)
--------------------------------------------------------------------------------
From: Af <[email protected]> <mailto:[email protected]> on
behalf of George Skorup <[email protected]>
<mailto:[email protected]>
Sent: Wednesday, June 28, 2017 8:01:22 PM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] PMP450 ~50mbps cap
14.2.1 has its own issues, mostly the high-priority bugs, but I
thought that would achieve 60+?
I guess someone could try a 450i SM on 15.1 and see if it's any
better. That should rule out or confirm the CPU suspicion.
On 6/28/2017 6:53 PM, Ryan Ray wrote:
That's about all I get on a 450 as well. I think it's CPU bound.
On Wed, Jun 28, 2017 at 3:18 PM, Eric Muehleisen
<[email protected]> wrote:
See attached. This is a 20mb SM. Again, it will burst up to 52
mb
On Wed, Jun 28, 2017 at 4:42 PM, Chris Wright
<[email protected]> wrote:
What QoS settings in the SM?
Chris Wright
Network Administrator
From: Af [mailto:[email protected]] On Behalf Of Eric
Muehleisen
Sent: Wednesday, June 28, 2017 1:36 PM
To:[email protected]
Subject: Re: [AFMUG] PMP450 ~50mbps cap
Yes. Just yesterday tested a 450i AP (40mhz) with a 20mb 450
SM. Linktests showed 137 x 58 but most we could burst to was 52
x 45. Both AP and SM are on 15.1.
I currently have a support ticket open for this as well as
increased DFS issues.
On Wed, Jun 28, 2017 at 3:22 PM, Colin Stanners
<[email protected]> wrote:
We setup a customer on a very lightly loaded 5ghz PMP450 AP and
SM, 20mhz channel, expecting them to burst up to 70mbit speeds
for download; linktest is reliably 85-90d and there's
effectively no other usage. But we can't seem to get over
50mbit speedtests. Has anyone else seen such issues?
