Joined: 08 May 2018 Posts: 14102 Location: Texas, USA
Posted: Thu Jul 21, 2022 15:22 Post subject:
@PaulGo: I don't have any VHT160-capable clients to test VHT160 on my R700P, however, what I will say here is that while you've mentioned that it is not supported by the device (in stock firmware?), DD-WRT employs modifications to (hopefully) support VHT160 channel width (I think?) and it may not work as expected. VHT160 only has almost no valid channel selections other than what is given. There is also the possibility that the VHT160 selection applies to other devices that *do* natively support it and it is just a carryover due to certain shared code within DD-WRT - which I would have to physically check and verify myself. It's up to you and nobody else as to whether or not to continue testing or discussing this topic on this forum. I may revisit this later after I find time to review code and gain some definite clarity. Your input is greatly appreciated. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
Joined: 31 Jul 2021 Posts: 2146 Location: All over YOUR webs
Posted: Thu Jul 21, 2022 15:42 Post subject:
Ide normally abstain from commenting about such wild claims, unless you have access to what is essentially closed source code and thus not part of the DD-WRT public tree, well... Not to mention on how they were modified recently.
Joined: 08 May 2018 Posts: 14102 Location: Texas, USA
Posted: Thu Jul 21, 2022 15:55 Post subject:
And I was abstaining from not only using BrainSlayer's own words, but addressing the elephant in the room. That being said, I am going with my best educated guess since I now currently have the same access with Broadcom and can reverse-engineer and inspect the binary object files directly if needed to further explain, although the "answer" is probably somewhere not laden with proprietary burdens. Got other fish to fry, don't want to hear any more noise on this, thanks for understanding. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
Contribute To DD-WRT Pogo - A minimal level of ability is expected and needed... DD-WRT Releases 2023 (PolitePol)
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Linux User #377467 counter.li.org / linuxcounter.net
Joined: 01 Dec 2021 Posts: 289 Location: Maryland, United States
Posted: Thu Jul 21, 2022 16:25 Post subject:
The way I can check the width of a channel using VHT80 and then trying VHT160 is with the app "WiFi Analyzer" on my Android Galaxy S21 phone. The app shows graphically the channel width. It accurately shows the 160Mhz channel width used by my AX6 router and the 80Mhz channel width with my R7000P router. However, when I try VHT160 on the R7000P it still only shows 80MHz channel width. So I have come to the conclusion VHT160 is currently not something that the R7000P can do using DD-WRT.
I am not complaining about this since I don't have a need to use VHT160 but I just wanted to point out something possibly which should not show up for this router and when I tried to use it on a previous build caused problems which caused me to reset the router.
I am extremely grateful for the work put into DD-WRT and in the complexity for supporting so many routers. I also realize how import it is to keep a router's firmware current to prevent hackers from using vulnerabilities in older firmware, especially those abandoned by the router's manufacturer.
Joined: 31 Jul 2021 Posts: 2146 Location: All over YOUR webs
Posted: Thu Jul 21, 2022 17:28 Post subject:
Wifi analyzer shows what it shows, clients/routers support what they support.
One does not equal the other.
Only by reading the clients full specs and whitesheets and assuming the functionality isnt removed on purpose from clients by the given stock firmware of the clients device you can make any educated guess.
If clients dont connect using the wider channel width, then its safe to assume the client doesn't support it (bare in mind the following, its important to consider). Having said that, its closed source and Broadcom are known for implementing off spec/standard shit, but each manufacturer can only support what is standard unless their chipset supports these off spec/standard implementations.
You Wont find Atheros/Broadcom will ever play well together. SO the S21 being which chipset radio wise? Atheros right?
Atheros also has their own ideas and never will match with Broadcom.
You can continue mentioning this ad nauseam, it wont however have any influence on how Broadcom/Atheros implement their shit and if DD-WRT shows something and allows it, its only compatible with Broacom clients who will support it. And just because both client/router are broadcom both need to implement/understand the off spec crap.
Always fun to be the only taco in a sausage fest. _________________ "The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep." - Robert Frost
"I am one of the noticeable ones - notice me" - Dale Frances McKenzie Bozzio