Joined: 30 May 2017 Posts: 582 Location: Rural Manitoba
Posted: Tue Dec 04, 2018 19:37 Post subject: RT3200acm r37882
This AM at the 24hr point my 5Ghz went to sleep and stopped communicating with the other WDS routers (again). This is third time this has happened with this latest update. Rebooted and all wifi immediately started normally, however WAN would not connect. Rebooted DSL Modem and still no connect. Rebooted Router again, no connect. Played with basic setup, but did not change anything, applied settings and WAM connected.
Normal operation of this build seems good but the 5Ghz drop and problem connecting to WAN is very annoying. Likely later today I will drop back to previous build. _________________ Starlink & DSL -> TPLink TL-R470T+
->
WRT3200acm Master WDS 5GHz 80Mhz CH 100 (+6) r55819
Ath1 2.4Ghz Disabled
99 Static Leases
ExpressVPN
WRT3200acm r55819 WDS Station 5Ghz
Ath1 AP N/G Mixed Channel 11 HT40
WRT1900Ac V1 5Ghz r55819 WDS Station
(Defective, no 2.4Ghz but 5Ghz works great)
WRT1900AC V1 5Ghz AC 80Mhz WDS Station r55819
2.4Ghz AP Ch1 HT20 Mixed
WRT1900ACS SPARE r54914
WRT1900AC SPARE r54914
WRT1900AC V1 5Ghz AC 80Mhz WDS-AP r55819
2.4Ghz AP Ch1 HT20 Mixed
WRT54G DD-WRT v3.0-r37305 micro AP CH 6 Mixed - Not in use
Joined: 04 Aug 2018 Posts: 1447 Location: Appalachian mountains, USA
Posted: Tue Dec 04, 2018 21:24 Post subject:
doniNZ74 wrote:
It look like it only affects the Roku's when on 5GHZ, and 80MHz channel width. 2.4GHz is always working, but I have same wifi SID for both 2.4GHZ and 5GHz so perhaps that is part of the problem.
Could be... I've always heard that same-SSID thing is one not to do. In any case, I also use an 80 MHz channel width on 5 GHz, mixed AC/N. _________________ 2x Netgear XR500 and 3x Linksys WRT1900ACSv2 on 53544: VLANs, VAPs, NAS, station mode, OpenVPN client (AirVPN), wireguard server (AirVPN port forward) and clients (AzireVPN, AirVPN, private), 3 DNSCrypt providers via VPN.
Joined: 04 Aug 2018 Posts: 1447 Location: Appalachian mountains, USA
Posted: Wed Dec 05, 2018 14:34 Post subject:
Good to know! One question it raises: suppose SSID A on 2.4 and SSID B on 5 are bridged together to share a subnet, and you want the equivalent of AP isolation for this bridge, equivalent because there is no such option for a bridge. I assume you can select AP isolation for each wifi (one or both may be a VAP), but how do you keep a device on A from seeing a device on B? Can you even do that with a firewall rule, given that they are on the same bridge? I'm guessing no. _________________ 2x Netgear XR500 and 3x Linksys WRT1900ACSv2 on 53544: VLANs, VAPs, NAS, station mode, OpenVPN client (AirVPN), wireguard server (AirVPN port forward) and clients (AzireVPN, AirVPN, private), 3 DNSCrypt providers via VPN.
Good to know! One question it raises: suppose SSID A on 2.4 and SSID B on 5 are bridged together to share a subnet, and you want the equivalent of AP isolation for this bridge, equivalent because there is no such option for a bridge. I assume you can select AP isolation for each wifi (one or both may be a VAP), but how do you keep a device on A from seeing a device on B? Can you even do that with a firewall rule, given that they are on the same bridge? I'm guessing no.
My guess is that it would likely need some iptables rules setup to prevent communication between ath0 and ath1
I don't have a good way to test, but a set of rules like this *should* work. Let's assume your wifi network is 172.16.1.0/24
IPTABLES -A FORWARD -i ath0 -s 172.16.1.0/24 -j DROP
IPTABLES -A FORWARD -i ath1 -s 172.16.1.0/24 -j DROP
This looks at any traffic being forwarded through the router to interface ath0 or ath1 with source IP in the 172.16.1.0 range and drops it. I've never tried filtering packets within a bridge like this though, so again it may or may not work as intended.
Joined: 17 Feb 2010 Posts: 611 Location: Yorkshire (GOC)
Posted: Thu Dec 06, 2018 12:16 Post subject:
d0ug wrote:
With the same SSID configuration your client devices should detect which has the best signal and use it automatically.
Well what happens in practice is not necessarily the same as what should happen in theory.
In my experience, client devices do not necessarily connect to the optimal channel, for either speed, or signal strength. This seems to be particularly the case for Windows 10 laptops, although Android devices are not immune.
I always like to know at a glance which band my WiFi devices have connected on, which is why I differentiate between the SSID names of the 2.4GHz and 5GHz bands. I do use the same pair of SSID names on my AP (upstairs), to match those on my router (downstairs). _________________ Linksys WRT32X v1 - r45677
Linksys WRT1900AC v1 - r45677
TP-Link Archer C9 v1 - r45677
Firmware: ftp://ftp.dd-wrt.com/betas/2021/
