Query about UniFi UAP-AC

[kearton]

Ubiquiti's marketing literature for this model says "breakthrough speeds up to 1300Mbps" and that is has a "gigabit ethernet port", plus a "secondary ethernet port".

I'm presuming you'd need both ethernet ports connected to get >1Gbps (when using 802.11ac)

Or is this one of those "theoretical" maximums, and in reality you only need 1 cable because you're not going to get >1Gbps?

[DMcCoy]

The port is so you can plug something else into it (like a camera, switch etc). 1GB LAN will not be the slowest bit.

[kearton]

So how do you get 1.3Gbps over a 1Gbps Ethernet connection? When I was looking at Xirrus AC kit a while ago they solved this by giving the access points 2 network connections.

[DMcCoy]

The bigger question is how do you get 1.3Gb out of 802.11ac. Wireless overheads are considerably higher and real throughput will be lower. Wave 2 AC may sometimes be affected by 1Gb, but not wave 1.

[kearton]

I guess it's their marketing department's spiel and the magic words "up to" that get them out of that jam then?

[m25man]

1.3Gbps is "wireless" throughput using 80Mhz channels and 3x3 mimo. Client -> AP or AP -> Client this is NOT the Phy interface speed.

The 300mbps overhead in this figure is used for the wireless component of the envelope.

In theory a gigabit wired packet can be transported over wifi with no loss in physical speed.

 

In reality your never likely to see such speeds due to general interference and or co channel problems and that many end user devices even though they are .ac devices are not actually 3x3 mimo and do not support 80mhz channels.

 

Most vendors claim 1.3Gbps as a theoretical max throughput on 80Mhz 5Ghz

 

Xirrus is a totally different technology using arrays of wifi radios built on switches that can share aggregated copper uplinks or 10Gbe fibre

 

You could have several .ac radios capable of 1.3Gbps connected to a single 10Gbe link servicing thousands of users.

 

Anyone comparing xirrus to unifi needs help, look in yellow pages under psychiatrist....

Edited June 23, 2015 by m25man

[kearton]

Anyone comparing xirrus to unifi needs help, look in yellow pages under psychiatrist....

lol thanks. Although I was only comparing the fact that the APs had dual ethernet. I realise the rest is comparing apples to oranges.