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Forum Discussion
5Ghz channels
Hello, I saw this topic here. But I would like understand why all upper 5Ghz channels are unavailabled for the clients. In Europe, at least in France, we can use the next channels in 80Mhz : ...
st_shaw wrote:
......... Orbi uses one for the backhaul and the other for client data. Unless you allow DFS, which it seems no NETGEAR routers do, there isn't really anything left to tweak.
..........
I don't think this is completely true.
At least in Europe, the 40 MHz channels 151 & 159 are not allowed to be used (due to Band C licensing) so that leaves only one non-overlapping non-DFS channels according to st_shaw's statement. I've never seen that my backhaul is using channels 149-161.
Orbi uses the DFS band for backhaul for sure. I can see that my backhaul is changing between DFS channels 100-144, which confirms that Orbi is applying the DFS regulation correctly. Seems that once Orbi detects radar signals on a certain channel it jumps to another channel, which is how DFS should work.
In fact, for my Router (which is located on the ground floor) I can see that Router's backhaul channel is jumping quite frequently between the channels, may be because it's exposed to radar signals more than the Satellite which is located in the basement. The basement rarely changes it's backhaul channels as I can see.
ekhalil wrote:
.......
Orbi uses the DFS band for backhaul for sure. I can see that my backhaul is changing between DFS channels 100-144, which confirms that Orbi is applying the DFS regulation correctly. Seems that once Orbi detects radar signals on a certain channel it jumps to another channel, which is how DFS should work.
.......
As mentioned, Orbi uses DFS channels for backhaul, when Radar signals are detected, Orbi will switch to other channels for backhaul.
To see the events when Orbi detects radar signals you can check this in Orbi log as follows:
- Enable Telnet in the routers debug.htm page
- Telnet to Orbi and enter the following command:
- root@RBR50:~# cat /var/radardetect.log
- You will get printout similar to this:
Radar Detected at [Wed Jan 23 23:19:55 CET 2019 ] on channels [116,120,124,128]
Radar Detected at [Wed Jan 23 23:26:20 CET 2019 ] on channels [100,104,108,112]
Radar Detected at [Wed Jan 23 23:26:30 CET 2019 ] on channels [132,136]
Radar Detected at [Wed Jan 23 23:42:35 CET 2019 ] on channels [140]
Radar Detected at [Wed Jan 23 23:45:52 CET 2019 ] on channels [116,120,124,128]
Radar Detected at [Wed Jan 23 23:50:52 CET 2019 ] on channels [100,104,108,112]
Radar Detected at [Wed Jan 23 23:51:58 CET 2019 ] on channels [132,136]
Radar Detected at [Wed Jan 23 23:53:04 CET 2019 ] on channels [140]
Radar Detected at [Wed Jan 23 23:59:20 CET 2019 ] on channels [116,120,124,128]
Radar Detected at [Thu Jan 24 00:00:06 CET 2019 ] on channels [100,104,108,112]
Radar Detected at [Thu Jan 24 00:00:53 CET 2019 ] on channels [132,136]
Radar Detected at [Thu Jan 24 00:07:56 CET 2019 ] on channels [140]
Radar Detected at [Thu Jan 24 00:09:39 CET 2019 ] on channels [116,120,124,128]
Radar Detected at [Thu Jan 24 00:09:49 CET 2019 ] on channels [100,104,108,112]
Radar Detected at [Thu Jan 24 00:12:19 CET 2019 ] on channels [132,136]
Radar Detected at [Thu Jan 24 00:23:17 CET 2019 ] on channels [140]
Radar Detected at [Thu Jan 24 00:28:47 CET 2019 ] on channels [116,120,124,128]
Radar Detected at [Thu Jan 24 00:33:19 CET 2019 ] on channels [100,104,108,112]
Radar Detected at [Thu Jan 24 00:33:57 CET 2019 ] on channels [132,136]
Radar Detected at [Thu Jan 24 00:34:25 CET 2019 ] on channels [140]
Radar Detected at [Thu Jan 24 00:36:27 CET 2019 ] on channels [116,120,124,128]
Radar Detected at [Thu Jan 24 00:37:14 CET 2019 ] on channels [100,104,108,112]
"No such file or directory". Looks like radar detection may be location dependent. My Orbi has no file in /var with that name, or anything close to it. (U.S.)
CrimpOn wrote:
"No such file or directory". Looks like radar detection may be location dependent. My Orbi has no file in /var with that name, or anything close to it. (U.S.)
If you checked both in router and satellites then I guess that means no radar signals have been detected by your Orbi the past few days. I noticed that values for only the past 24 hours or so are stored.
My router has such a file but my satellite doesn’t, I guess just because the satellite is in the basement and is “protected” from radar signals.
How do you list the contents of the directory from telnet? I can see how you can change directories, but I sure would like to see the file structure and contents
I use the unix (linux) "ls -l" command, where -l is the lower case letter L. (Wikipedia has a nice description https://en.wikipedia.org/wiki/Ls)
as in:
cd /var
ls -l
