On Fri, Feb 20, 2015 at 12:33 PM, Juliusz Chroboczek
<[email protected]> wrote:
>> I'd be a bit curious to know what people are using for test hardware.
>
> The WNDR3800/WNDR3700v2 is still my favourite.  I've still got a couple
> Asus 500GP v1, and they're just fine if you don't need 802.11n and can
> fit in the slightly more limited flash.

Despite evaluating well over 60 products and chipsets in the past 3
years, I have yet to find something as nice as the wndr3800 as either
a R&D or day to day ultra-reliable home router.

More generically the ag71xx/ath9k chipsets it used are the most
aimiable to hacking on and there are hundreds upon hundreds of current
products based on that, like the WZR the homewrt folk used.

However single cpus like that with 32k dcache proved not up to the job
of 802.11ac and there is a lot of chaos and crap gear going around on
that standard.

Elsewhere the whole wifi industry is seemingly in a race to the
bottom. As one example, I use the nanostation M5s heavily, and they
(silently) changed the underlying chipset last year from one with two
ethernet interfaces, to 1 connected to a 100Mbit switch. Result - no
link status anymore, the impossibility of measuring traffic well
across the two interfaces, and an increase of latency under load to
the buffering in the switch.

The new nanostation IS a bit faster (mips 74k based rather than 24k),
and has twice the ram, for the same cost as the old, and it still has
8MB flash, so I should not complain too much, I guess. (My typical
topology is 2 nanostations connected to a picostation  M2HP AP)

I have been seeking an integrated outdoor tri radio replacement for
that particular setup for a long time.

As for everything else I have evaluated, I am thinking of publishing
it all, after I tone down the invective logged in my notes.
Most recently I took a look at two 802.11ac products from d-link.

https://lists.bufferbloat.net/pipermail/bloat/2015-February/002310.html

ubnt is *clued* in comparison to nearly everyone else.

> Both models:
>
>   - are well supported by OpenWRT;
>   - are very difficult to brick (just set up a tftp server and interrupt
>     the boot sequence to reflash);
>   - have a manageable built-in switch that's configurable from OpenWRT.
>
> The WNDR3800 has 16/128 flash/RAM, the 3700v2 16/64, the Asus 8/32.
>
> The WNDR3800/3700v2 has some other nice features, like a second gigabit
> NIC that doesn't go through the internal switch (to get VLANs without
> messing with the switch), support for 5GHz, and two radios usable
> simultaneously (which Babel is able to use for avoiding intra-route
> interference).

With the current chaos calmer code (using linux 3.18) I get a
downstream rate of 560mbits and an upstream of 146 on the ethernet.

The ratio used to be closer to 340/180.

So much else in my lab (notably the tcps) has changed since the last
time I did benchmarking that I have no idea what to point at, and
openwrt enables the wndr3800 vlan by default, which is not my fav
thing, either, and I haven´t poked into any of it much, being
presently focused on evaluating the latest patchset for minstrel-blues
( http://www.linuxplumbersconf.org/2014/ocw/sessions/2439 ) right now.


> -- Juliusz
>
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-- 
Dave Täht

thttp://www.bufferbloat.net/projects/bloat/wiki/Upcoming_Talks

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