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There has been lots of online debates about the WAN packet overhead maths, suitability and real benefits of ATM vs PTM.
For my PPPoE connection, I have opted for 27 ( a while ago)
My connection which is VDSL2 and PPPoE (for example) should be 27 or 30, but have always found that if I set my WAN packet overhead to 27, latency is better for gaming and never noticed any packet loss etc.
- pppoe-vdsl (27)
- vdsl2 pppoe ptm (30)
For the real maths, take a look at below link.
https://lists.bufferbloat.net/pipermail/cake/2015-May/000182.html
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In a completely sane world, madness is the only freedom (J.G.Ballard).
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Hello again.
So an update. There was a deal on Amazon Eero system I wanted to try (ยฃ200 for a 3 pack so I knew coverage would not be an issue) but after testing it’s really not good for gaming. The SQM system barely works. My Billion was better!
I just decided to get the DSL-AX82U as an all in one solution and send the Eero back (I will add via AiMesh if I need more coverage later). I will set it up tomorrow. While I am here I have a question I’ve never really thought about.
Is it worthwhile to configure alternate DNS like Google on the DSL-AX82U or should I stay on BT default?
Thanks
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Hi,ย info on all free DNS:ย ย https://www.softwaretestinghelp.com/best-dns-servers/
I have Quad9 as an example
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I don’t know if IPv6 has any advantages for gaming but I will definitely be trying other DNS servers once I know that the default service from BT is okay. Probably tomorrow night I will set it up as internet is needed by family tonight and tomorrow morning/evening.
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Didn’t have much time to configure tonight, family needed net for a work project but wow what a fast setup. It auto detected the VLAN ID (101) and I selected BT Infinity and that was it after I did the bthomehub@btbroadband.com stuff. Just connected stuff via wireless to make sure it’s ok and now my upstairs PC (wi fi 6) is pinging bbc.co.uk at basically the same pings as wired give or take 1-2 ms. Pretty insane so far.
As for installing merlin, I’ll tackle it tomorrow. I just get the latest .w file and upload here right:
Also this is the speed the asus gave me directly:
Is there any issue with setting anything lower than what most people recommend for QoS? e.g. 95% of that is roughly 42 but would it be ok being conservative with say 41? About 9 for upload?
Also the router did something I had never seen before. It pinged bbc.co.uk in 14ms!
Best I ever saw before on other routers was 15ms and that was super rare (usually 16-17). I may hit 12ms on FTTP haha. :D
Thank you
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Is there any issue with setting anything lower than what most people recommend for QoS? e.g. 95% of that is roughly 42 but would it be ok being conservative with say 41? About 9 for upload?
Glad the DSL-AX82u seems to be working well for yourself, balancing router setting up and family life (wifi downtime) is always a struggle.
For QoS, I set mine so that it is 10% below my max internet speed, this stops any buffering/congestion at the exchange etc.
What’s the wifi signal strength like, is it reaching all part of you house ?
Yes, for loading the @GNUton (RMerlin) firmware, just download the latest .w file and perform a manual upload, once upload has finished, reboot router and you should be good to go
In a completely sane world, madness is the only freedom (J.G.Ballard).
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When I had eero mesh the far away camera was full 3 bars but now I’m back to 1 bar. However I’ll just have to live with it. There is no other mesh system that has SQM. I could maybe try TP-Link Deco but I will just stick with this single Asus and if I do need more coverage I’ll go into AiMesh and buy something like a TUF-AX5400 for ~ยฃ100. Deco would be ok I think but then I’m back to a non all in one unit and some mobile phone app in which on most Deco you can’t even configure MTU size and even on units you can it’s only specific hardware versions of the same unit. Just seems a mess to look into.
Alot of screenshots below. I just decided to set traditional QoS on stock firmware. Relatively safe values:
I don’t even know if I need cake now. However, I think I have discovered a weird bug. Sometimes my router page looks really weird.
It states no clients connected, wireless isn’t filled out and the aura rgb states it’s still on when I know it’s not:
Even after closing Google Chrome, and going back to router.asus.com it persists. To fix it I have to click Logout at the top and then it is normal again:
You can now see that the clients are displaying normally, wifi is filled in at the right hand side and the aura rgb now properly shows it is off.
Last screenshot, do these DSL stats look ok or should I be worried?
A CRC and ES error on upstream and 10,000 FEC. Tbh I never really looked at my stats on the Billion to compare.
Sorry for the amount of screenshots but seems like I need them to explain.
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FEC are a tad high, but nothing to worry as it will take a few days for your local exchange/cab to settle, luckily few CRC’s (1 upstream) so that is good news.
Great BufferBloat results of A+, so will be interesting if same results are achieved once all family is using internet etc.
TBH, leave it all alone for a few days, (no rebooting) and you may squeeze a little higher line synch as your SNR values are a tad high, you are connected to an ECI cab, so will be interesting to see what happens from a line synch perspectiveย
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Sorry to double post but I just decided to look at fast.com. It said my loaded ping went up which is true but only on the initial burst. I ran a ping test to bbc.co.uk then started fast.com
As you can see on pings 8-9 is where the burst happened before returning to normal even when downloading.
Is this expected behavior of traditional QoS on Asus? Will something like Adaptive Qos or Cake not have those small spikes?
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You think itโs best to just sit still a couple days and see what happens before I try merlin? You donโt have to worry about all this FEC and CRC stuff on FTTP right?
I would leave for few days, just to see if the DSL settle in nicely.
Yes, for FTTP, a lot less issues generally, no electromagnetic interference etc. which can cause CRC etc. OLD PSTN cables cause these issues also, so a new Fibre run (FTTP) would be most beneficial
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QoS is a huge subject but in relation to the DSL-AX82U and the short version.ย (don’t hold me to this) …
CAKE QoS: Ensure fairness so one device / data type does not hog all the bandwidth (IP fairness)
Adaptive\Flex QoS:ย ย Is rule based which allow your highest priority (most important) applications to continue to function while other don’t when there is not enough bandwidth, lower priority services can suffer.
CAKE QoS is great, as you can set it up and forget it, but if usage exceeds bandwidth allocated, then data streams can suffer.
I use Tradition QoS on my ASUS routers as Gaming PC’s and Consoles are top priority.
FYI: (conversations I have had in the past with ASUS about the DSL-AX82U)
- Traditional QoS on DSL-AX82U use fq_codel
- Traditional QoS disables NAT Acceleration for the DSL-AX82U
- Adaptive QoS does not use fq_codel it usesย sfq
- fq_codel generally improve bufferfloat issues compered to sfq
A case of trial and error with QoS, but look at CAKE and Traditional QoS as you first best two options
In a completely sane world, madness is the only freedom (J.G.Ballard).
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I definitely think I need to try Cake. I was torrenting (Linux ISO downloading ofcourse) and I was getting ping spikes. Not high ping spikes (about 15-35ms) but it was definitely happening even when I was only downloading at about 30 Mbps. Far below what I had set. I’m guessing the multiple connections is messing it up.
DSL stats update. Some CRC and ES has creeped in but it still seems fine I think. I saw threads where people were getting thousands of CRC per day and people said it was completely fine. 1 day 16 hours uptime right now.
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