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Fuzzy the cat loving the new Cambium cnMatrix switch.
Quick run through of the cnMatrix Web interface.
A quick look at the console interface of a Cambium cnMatrix switch
Recently there was a thread on the Cambium forums about frame utilization changes in the new 16.01.1 firmware.
Trying out OBS software and a quick look at Cambium switch line.
Cambium and CTIconnecxt put on a webinar about ePMP 3000 today. This should be available online at one point. Look for it in the Cambium forums.
Some notes I took
-ePMP 3000 offers Simultaneous MIMO downlink transmission
-You will be able to use the beamsteering antenna with the 3000. Cambium is working on the software to make this work.
-3000 has a dedicated receiver chip. This allows you to run the spectrum analyzer in realtime. Also has “edetect on steroids” which shows more information than the current edetect.
-Sector is a 4X4 90 degree sector with beamforming. Achieves and extra 3db in the downlink.
Beamforming vs Beamsteering
Beamsteering is for dealing with interference.
Beamforming is for downlink gain.
-Cambium mentioned the concept of Azimuth Delta. This is groups of SMs in terms of how the AP talks to groups. The gave an example on a google earth plot. In a nutshell, when you have gain in one direction it takes advantage of the null in different directions. More to this, but that is for another post.
-“Sounding” -Sends a special packet and gets feedback from the subscriber. Determines how the phase shift works and other things.
-Elevated clients beta is coming to make the elevated clients work with the 3000.
I hope distributors work out a smaller cold shrink for the sma connectors on the ePMP Ap radios. Weatherproofing these properly will be an issue due to the close proximity of the connectors. I have not seen the connectors on a sector to see how those will be. This is where folks could take a page from the coldshring that comes with the Baicells gear or the cables with the integrated boot some distributors sell.
ePMP Beta Release 3.5.5-RC8 is now available for the ePMP and Elevate. The software downloaded at our Software Download Site, ePMP Beta: https://support.cambiumnetworks.com/files/epmp/beta
Force 190 FCC region support (including DFS functionality)
Multiple improvements to IPv6 operation with cnMaestro and DHCPv6
[Elevate] NBE-M5-16 produces errors on Ethernet interface
RX Pause counter increases on Mikrotik routers with ePMP devices connected
PMAC details not updated in cnMaestro when changing associated AP
Error Drop Packet erroneously reporting packet drops
NTP server IP assignment cannot be changed after JSON configuration file import
In a previous post, I mentioned a 5-mile link using Cambium PTP550s and why frequency matters. Today we enabled the second radio and have some results from that. First, let us talk about some of the parameters.
As you can see from our frequency scan we have a very noisy frequency. Without DFS we have very few open channels. Due to this, the results you will see later are not optimal. The limiting factor is the noise on the band.
After much channel selection, this is what we ended up with. As you can see we are just running a 40mhz and a 20mhz channel. This is because the band is so noisy.
As a result of the frequency, this is what we have ended up with for quality and capacity. The second radio is less than optimal, but it is passing solid data.
So what do speed tests look like across the link?
Some of you may still be asking, it should be more. If you have noticed the noisy frequency band has been the greatest factor on this link. In the quality and capacity screenshot, you will notice the 2nd radio only has a 45% capacity. This is due to channel selection. If we could get better channels this would improve the link.
Wo what is the answer? Better backhaul antennas are upgrade number 1. Currently, we are using UBNT 2 foot dishes, which were chosen due to the gain needed on this link. Secondly, when DFS is certified for these radios we will have more channels available. The frequency scan shows the DFS channels are less noisy in this area, which will increase throughput.
Just for giggles, we had the tech on-site run a speedtest. This was through a wireless router with a 100 meg ethernet port plugged into the local router.