Hello,
I am using basebox 5 as my access point connected to ubnt sector of 120 degree. And had connected multiple SXTs and TP link CPEs to the access point.
From few days I am facing the problem of disconnecting of the SXT not all at a time but with some random frequencies. And 3 or 4 from 30 are facing this problem daily.
So as a solution I changes to “station bridge mode” to " station wds mode" and also upgraded firmware of the SXTs to "6.36.2 (stable).
Request you to suggest few debugging steps to solve my problem.
Signals of the SXT range from - 65 to - 72
Help me guys..
WDS isn’t going to solve anything, but make performance worse.
You mentioned you were using TPlinks mixed with the SXTs also… that’s a no-no, as prevents you from using a wireless TDMA protocol (Nv2 or nstream), regular 802.1 doesn’t scale well.
If the CPEs disconnecting are walways the same ones, check remote SXTs aren’t being affected by interferences at the remote end.
Google Earth Pro can be useful to check those SXTs actually can be pointed “inside” the 120º beam the sector provides.
Thank you for your reply,
I have pointed the devices well within the 120 degree of sector. As mentioned earlier signals range between 65 to 72.
Yes you understood it correct that the issue is for remote SXTs. Could you suggest some way of avoiding interference or atleast checking interference.
Nv2 can’t be used coz of tplink combination. Do we have any another solution.?? Or can we use Nv2 for SXT and 802.11 for tplink from same basebox??
Please provide some solution. Or configuration which may sort the problem.
Signals level “don’t tell all the story”; SNR, and specially CCQ are better indicators, and all parameters must be taken into account to determine the link quality.
To check interference you’ll have to either change the wireless package to wireless-rep to be able to perform a scan remotely, or go there to check… if the issue is nearby interference you’ll have to reposition the SXT; changing the main AP frequency is the last resort, as that may “move” the interference problem to other CPEs.
No, you cannot run both protocols on a single radio. To keep a single AP the only solution possible would be replacing the TP-Links with SXTs.
If you don’t want to replace the TP-Links, you’ll need to deploy another Routerboard (SXT SA, mANTBox, or basebox + sector), and run one in 802.1 mode for the TPlinks, and the other in Nv2 for the SXTs. Use a different frequency on each.
The optimal would be replacing the tplinks; as I stated previously, 802.1 isn’t designed for scalability, and performance suffers from 10 connected clients onwards; it also suffers from the “hiddn node” problem. To provide quality service you must use a TDMA protocol.
A picture is better than a thousand words:
10 stations, 802.1:
10 stations, nstreme:
Source: (Comparison of Wireless Protocols by Pawel Ciepliński