[Cake] Beating bufferbloat

Sun May 1 08:18:06 EDT 2016

Dear All,

I now have the TP-Link Archer C7. Would it be possible to have a walkthrough of setting it up to beat bufferbloat on my FTTC connection?

-- 
Alec Robertson

On 29 April 2016 at 3:58:55 pm, Dave Taht (dave.taht at gmail.com) wrote:

I am using this build. one thing that failed twice recently was the  
dnscrypt stuff (for no reason I can discern). I ended up disabling it  
this morning.  

On Sun, Apr 24, 2016 at 3:37 AM, Arie <nospam at ariekanarie.nl> wrote:  
> If you want a very recent cake version, you could use my build from here:  
> http://ariekanarie.nl/openwrt/mvebu/ It's based on the very feature heavy  
> OpenWRT build by trondah ( https://forum.openwrt.org/viewtopic.php?id=50914  
> ), but using more recent cerowrt and cake stuff.  
>  
> You'll want to flash the shelby factory.img if still on stock firmware, else  
> shelby sysupgrade.tar.  
>  
>  
>  
> On 24 April 2016 at 00:22, Alec Robertson <alecrobertson13 at gmail.com> wrote:  
>>  
>> Dear All,  
>>  
>> I’ve realised that I have been responding to Kevin rather than to the  
>> mailing list - my bad!  
>>  
>> I think I will purchase a Linksys WRT1900ACS as it seems to be fairly well  
>> regarded and is easily accessible in the UK.  
>>  
>> How do I go about setting up Cake on it?  
>>  
>> --  
>> Alec Robertson  
>>  
>> On 23 April 2016 at 9:00:52 pm, Alec Robertson (alecrobertson13 at gmail.com)  
>> wrote:  
>>  
>> Dear Kevin,  
>>  
>> I did look at the Linksys WRT1200AC but it seems to get some rather poor  
>> reviews on Amazon?  
>>  
>> --  
>> Alec Robertson  
>>  
>> On 23 April 2016 at 8:58:02 pm, Kevin Darbyshire-Bryant  
>> (kevin at darbyshire-bryant.me.uk) wrote:  
>>  
>>  
>>  
>> On 23/04/2016 20:42, Alec Robertson wrote:  
>>  
>> Dear Kevin,  
>>  
>> That’s very useful thanks.  
>>  
>> You say the TP-LINK Archer C7 should just be okay. What could I get that I  
>> know will last me for a long time? What’s got good WiFi range too?  
>>  
>> The honest answer is I've absolutely no idea and I'm in that dilemma  
>> myself. There's a remake of the linksys WRT range (WRT1200????) that  
>> apparently is very powerful, I guess the issue is how far along OpenWrt is.  
>> I might have the wrong end of hte stick but I think Dave Taht may have  
>> something working.  
>>  
>> Apologies, I'm not really a mine of information.  
>>  
>>  
>> I’m using powerline at the moment but fed up with it disconnecting. I  
>> think it is probably the TP-LINK adaptors I am using (known issue  
>> apparently) but wiring up the house is unpractical at the moment. I don’t  
>> think there is a better solution really.  
>>  
>> --  
>> Alec Robertson  
>>  
>> On 23 April 2016 at 8:00:00 pm, Kevin Darbyshire-Bryant  
>> (kevin at darbyshire-bryant.me.uk) wrote:  
>>  
>> Hi Alec,  
>>  
>> I'm not familiar with TalkTalk but they sound like they do similar  
>> things to Sky - Sky just need a 'login ID' as part of the DHCP request  
>> packet (which funnily enough are the PPPoA/E login details)  
>>  
>> In terms of speed sacrifice, erm, none really. I've set 40mpbs incoming  
>> and 9990kbps for outgoing on a 40000/9999 link as reported by the  
>> modem. Probably critically I've set the packet overheads to 12, and I  
>> now can't remember why... there's an on-wire vlan tag (4 bytes) but the  
>> reason for the other 8 have fallen out of the brain cell.  
>>  
>> I've a semi-regular backup job overnight that on a bad day overruns into  
>> the day - a week or so ago it ran for something like 2 days and I had  
>> absolutely no idea - thinkbroadband's ping monitor was registering  
>> something like an extra 5mS latency over the baseline, peaks were  
>> something like 25mS - backup stats and openwrt's stats package were  
>> registering the full 10mbps uplink in use during that time.  
>>  
>> Does that help?  
>>  
>> Kevin  
>>  
>>  
>>  
>>  
>> On 23/04/16 19:40, Alec Robertson wrote:  
>> > Dear Kevin,  
>> >  
>> > I am on TalkTalk which uses IPoE, so no PPPoE use at all, as far as I  
>> > know. I certainly haven’t ever configured login details.  
>> >  
>> > How much speed do you have to sacrifice on your connection to  
>> > eliminate bufferbloat?  
>> >  
>> > --  
>> > Alec Robertson  
>> >  
>> > On 23 April 2016 at 10:46:35 am, Kevin Darbyshire-Bryant  
>> > (kevin at darbyshire-bryant.me.uk <mailto:kevin at darbyshire-bryant.me.uk>)  
>>  
>> > wrote:  
>> >  
>> >> Hi Alec,  
>> >>  
>> >> A brief appearance from me whilst I have a spare few seconds.  
>> >>  
>> >> Not stupid!  
>> >>  
>> >> There’s an obvious question: Why are Billion still shipping buffer  
>> >> bloated devices? Have they been sent graphs/demos/logs of how their  
>> >> kit is faulty?  
>> >>  
>> >> To offer some hopefully constructive pointers: For FTTC service I’m  
>> >> guessing you’ll be using the Billion as a vdsl modem. Who’s the ISP?  
>> >> AFAIK anyone other than Sky will need to run PPPoE and hence hit the  
>> >> 1492 MTU restriction *unless* the Billion supports mini jumbo frames  
>> >> on the ethernet side and the PPPoE MTU extension (the rfc number  
>> >> escapes the brain at the moment) Sky don’t use PPP and just run  
>> >> ethernet frames over PTM…..the way it should be. The incoming  
>> >> packets from ISP to you are policed at something close to sync rate,  
>> >> this is part of the BT specification. The uplink of course can be as  
>> >> bloated as hell ;-)  
>> >>  
>> >> I use an Archer C7 with BT’s equally horrendously bloated HG612 vdsl  
>> >> modem on a 40/10 link with sky as my isp. In terms of CPU usage it’s  
>> >> about 1% per megabit so a full 40/10 uses around 55% cpu, I think  
>> >> there’s enough for your 60/20…just.  
>> >> https://middling.me.uk/blog/2015/03/customising-openwrt-to-my-needs/  
>> >> offers further advice which I found useful.  
>> >>  
>> >> Kevin  
>> >>  
>> >>  
>> >>  
>> >>  
>> >>> On 22 Apr 2016, at 23:01, Alec Robertson <alecrobertson13 at gmail.com  
>> >>> <mailto:alecrobertson13 at gmail.com>> wrote:  
>> >>>  
>> >>> Hi all,  
>> >>>  
>> >>> I’ve been out of the bufferbloat game for a while and want to try  
>> >>> and beat it once again.  
>> >>>  
>> >>> I’ve got an FTTC connection (UK) which I get around 60Mbps on but  
>> >>> with horrible bufferbloat on my Billion 8800NL. What router should I  
>> >>> get that can run OpenWRT and handle this connection? Do the newest  
>> >>> builds of OpenWRT have cake built-in now via sqm-scripts or would I  
>> >>> need to install this manually. If so, how would I do this?  
>> >>>  
>> >>> Would appreciate any help and apologies if I come off in any way  
>> >>> stupid.  
>> >>>  
>> >>> --  
>> >>> Alec Robertson  
>> >>> _______________________________________________  
>> >>> Cake mailing list  
>> >>> Cake at lists.bufferbloat.net <mailto:Cake at lists.bufferbloat.net>  
>> >>> https://lists.bufferbloat.net/listinfo/cake  
>> >>  
>>  
>>  
>> ________________________________  
>>  
>>  
>> --  
>> Thanks,  
>>  
>> Kevin at Darbyshire-Bryant.me.uk  
>> M: +44 7947 355344 H: +44 1256 478597  
>>  
>>  
>> _______________________________________________  
>> Cake mailing list  
>> Cake at lists.bufferbloat.net  
>> https://lists.bufferbloat.net/listinfo/cake  
>>  
>  
>  
> _______________________________________________  
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> Cake at lists.bufferbloat.net  
> https://lists.bufferbloat.net/listinfo/cake  
>  

--  
Dave Täht  
Let's go make home routers and wifi faster! With better software!  
http://blog.cerowrt.org  
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