R720 upload slow compared to R710 (Controlled by ZoneDirector 1200 10.1.1.0 build 55)

[sven_jaanson]

Hi

Situation (in basic/short - maybe little too basic):

4 WLAN's deployed. About 20AP's (different models).

R710 controlled by ZD 1200 - everything related UL/DL speed seems to be fine from client perspective (different laptops). Did some basic test using "speedtest.net" DL/UL is about around 140Mbit which is expected since our ISP gives us 150Mbps uplink.

Then I replaced R710 -> R720 and some weirdness begins - DL is ~140Mbps which is okay but UL is about 1....6Mbps!!!
Checked cabling, tried different PoE adapters, tried different switch ports, tried another R720, tried some other various possibilities - nothing.
Only thing that I'v noticed that makes some kind of difference is when I strart playing with "SSID Rate Limiting".
When the problem starts, there were no rate limiting on this particular WLAN, but when I set rate limiting to 200Mbps UL/DL, then testing against "speedtest.net" gives us about 80Mbps UL/DL (varies per test).
Also, there were some changes in UL/DL speed on this particular WLAN when I played with rate limiting on another WLAN - I don't understand how this is possible,but it was.
Since I had limited time to test further, I'v sent this R720 back to our reseller and continued with R710.
But I know that I should extend our WIFI infrastructure in near future, so I'm looking for recommendations what else should I do to find out what might be wrong?

BTW: On the time of problem, ZD FW update from 10.1.1.0.35 to 10.1.1.0.55 did not help.

[alexey_isakov]

I hаve ZD1200 too but not R700. I Do not seen this difference divergent UL/DL during use my RUCKUS WiFi. And do not seen this in RUCKUS docs.
If I were U I could look at:
- Ethernet interfaces (utilisation, speed/duplex) 
- load & band balancing in ZD GUI(try to off them);
- 802.11_b clients PDA. If there is no this PDAs in the air, still the problem happening? 
- Is it possible to switch off 802.11 b/g/n for check the problem in 802.11 a/n/c only?

[sven_jaanson]

As stated by Darrel Rhodes it is a bug related to somehow with this new 2.5G ports.
But I'v already digged around switches regarding Eth interfaces (we do not have any device supporting 2.5G).
Utilization speed/duplex is fine.
No loadbalancing.
No PDA's
Tried both bands.
Nothing.

[alexey_isakov]

So if U forcibly (not auto) tune the ports  (2,5G & plugged into it) in 1000BASE TX there is no problem repeats again?

[sven_jaanson]

There were no difference auto vs. manually fixed 1Gbps.

[DarrelRhodes]

To be clear, the AP needs to be connected to a 2.5Gbps port for the issue to be bypassed.  As I stated previously: the issue cannot be resolved by changing the configuration of the AP and needs new firwmare code.