[Cerowrt-devel] CeroWRT and "FTTN" 50/10 VDSL2 (aka "FIBE")

Dave Taht dave.taht at gmail.com
Fri Jun 27 16:15:24 EDT 2014

On Fri, Jun 27, 2014 at 12:37 PM, Dave Taht <dave.taht at gmail.com> wrote:
> On Tue, Jun 24, 2014 at 3:48 PM, Michael Richardson <mcr at sandelman.ca> wrote:
>> On Monday I had VDSL2 installed at my home office.
>> 50Mb/s down, 10Mb/s up from storm.ca. Native IPv6, but as far as I can tell,
>> they aren't speaking DHCPv6; anyway I kept my /56 from my previous
> Cool. I note that the wndr3800 runs out of horsepower at about 50mbit/10.

And when I say that, I mean it. HTB eats all the cpu, leaving nothing
for wifi , wifi crypto, the web interface, etc, at these rates. I have
long been looking for something more efficient than htb without much

So assuming your downstream bloat isn't "bad", and you stick with cero
on this interface, I'd disable the downstream rate limiter entirely
(set it to 0), and just use sqm on the upstream. It is increasingly
hard to hit the higher bandwidth limits with normal traffic.

(but I'd love a rrul measurement all the same... )

> The edgerouter (which has fq_codel in their 1.5 firmware release), doesn't.
> (and it took 10 minutes to port the sqm-scripts over to it)
> (and I haven't got around to booting an openwrt version on it, their firmware
>  is 3.4 based)
> That said I am seeing stuff that indicates inbound htb is increasingly
> inaccurate on both products starting at about 20 mbit. (I had long
> assumed before now that it was a cpu limitation as I don't see this on
> x86) The 36mbit number you got matches mine, try increasing the rate
> limit to 64mbits and see what happens.
> Also, please measure the bloat you get on the openrg without sqm.... I
> would hope the downstream bloat is less horrible than cable modems.
>> connection, but agreed to swap my IPv4/25 for an IPv4/28.
>> I moved all my IPv4 to traditional NAT'ed, IPv6 all around, and /32
>> routed the IPv4 to the various machines that actually need it.
> nifty. When I get a /29 from comcast I don't have that ability, I think.
> did you do that via proxy arp, or did they give you an ipv4 gateway
> and routed the /28 ?
>> The ISP (www.storm.ca. Great local ISP.) provided me a SmartRG router in
>> bridged mode.  I'd like to get into it; but they don't answer questions from
>> "end-users"....
>> With a laptop hooked up, I saw the full bandwidth.
>> With the Netgear 3800 running 3.10.44, I saw a max download of 36Mb/s.
>> Initially, I was seeing 7Mb/s, 640Kb/s up, as well.. that's what the QoS
>> parameters were set to from my bridge-DSL setup :-)
>> (So, the good news is that the scripts definitely *do* something...)
>> I had problems last week with getting bridges over wireless to work,
>> and later on problems with getting all the wireless devices to come up.
>> My PPPoE interface doesn't come up on it's own.  What is the "@ge00"
>> part about?  I'm doing it in /etc/rc.local, which has all sorts of
>> problems, including failing to include the pppoe-* interface into the
>> iptables, etc.
> regrettably how pppoe works is a mystery to me. I'd nuke the @ge00 and
> try creating the pppoe interface from the gui for a start.
>> At this point my guess is that netifd has some kind of limit on the number of
>> interfaces it will bring up.  I have 27 interfaces in my the ifconfig,
> Well there are other hard limits - for example ifb's number is created by
> a line in /etc/modules.d/ (ifb numifbs=0)
>> including the 8 "ifbX" ones, the tun,tap, and my VLANs ("se00.XX") and the
>> like.  Maybe the number is around 16... I have been looking at netifd source,
>> and I don't see any obvious struct interfaces[16] or something like that.
> You definately aren't a typical user.
>> Is there a way to enable debugging on netifd?  The -d option to it?
>> The /etc/rc.common stuff is... a bit impenetrable to me...
> Hit #openwrt-devel for questions - netifd is a rather complex state machine.
>> --
>> ]               Never tell me the odds!                 | ipv6 mesh networks [
>> ]   Michael Richardson, Sandelman Software Works        | network architect  [
>> ]     mcr at sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [
>> _______________________________________________
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>> Cerowrt-devel at lists.bufferbloat.net
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> --
> Dave Täht
> NSFW: https://w2.eff.org/Censorship/Internet_censorship_bills/russell_0296_indecent.article

Dave Täht

NSFW: https://w2.eff.org/Censorship/Internet_censorship_bills/russell_0296_indecent.article

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