Re: [Cerowrt-devel] Build instructions for regular OpenWRT with Ceropackages

[dpreed@reed.com]

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Mikael, very very helpful, thanks.
 
I now understand what you are trying to prove/test in your experiments, but there is definitely a need for cake when the dominant use is hi-bitrate WiFi (AC1900) talking to one or more 1 GigE wired paths.  And hi bitrate WiFi itself has significantly variable rate capability so it probably needs more feedback than cake might provide to deal with variability.
 
Since 100+ Mb/sec is supplied by many Internet Access Providers now,  it's timely to be able to process packets coming at those rates on the wireline side carried over 1 GigE (my provider, RCN, claims to offer 110+ here in Needham, but with an odd requirement that I buy their router if I get that service - I am trying to get to the bottom of what that is before I upgrade or switch to one of the two other providers, Comcast and Verizon. Maybe it is just that they want customers to not get screwed up if they have a router without 1GigE WAN adapter, complaining that they can't get 110.).
 
I'd like to see both whatever I get from the IAP, and also what my in-home NAS can provide, along with other services.


On Tuesday, June 30, 2015 3:58pm, "Mikael Abrahamsson" <swmike@swm.pp.se> said:



> On Tue, 30 Jun 2015, dpreed@reed.com wrote:
> 
> > What happens if the SoC ports aren't saturated, but the link is GigE?
> > That is, suppose this is an access link to a GigE home or office LAN
> > with wired servers?
> 
> As far as I can tell, the device looks like this:
> 
> wifi2------
> wifi1----\|
> SOC2 6-|
> SOC1 5-|
> WAN 4-|
> LAN1 3-| (switch)
> LAN2 2-|
> LAN3 1-|
> LAN4 0-|
> 
> LAN1-4 and SOC2 is in one vlan, and SOC1 and WAN is in a second vlan. This
> basically means there is no way to get traffic into SOC1 that goes out
> SOC2 that will saturate either port, because they're both gige. Only way
> to saturate the SOC port would be if the SOC itself "created" traffic, for
> instance by being a fileserver, or if there is significant traffic on the
> wifi (which has PCI-E connectivity).
> 
> So it's impossible to congest SOC1 or SOC2 (egress) by running traffic
> LAN<->WAN alone.
> 
> --
> Mikael Abrahamsson email: swmike@swm.pp.se
> 

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