[Cake] Re: help request for cake on a large network

[Jaap de Vos <m@jaap.pro>]

Hi David,

I haven't tried it myself yet, but this sounds like a use case for which LibreQoS is suitable. However, LibreQoS would fit best if you can build something in line with the design assumptions: https://libreqos.readthedocs.io/en/latest/docs/v2.0/design.html
Specifically the part about putting it in between other routers and running a routing protocol with those.

There are some good recommendations around suitable hardware and sizing/scaling too: https://libreqos.readthedocs.io/en/latest/docs/v2.0/requirements.html

What kind of upstream bandwidth are you working with at the conference? I run the Mikrotik implementation of CAKE on a campsite. It really helps to get the most out of our asymmetrical gigabit coax line over there, no fiber available yet. So far, we got close to 500 devices on our outdoor Wi-Fi network with mostly good experiences, amazing. Before that, FQ_CoDel on PfSense worked well too, but the network wasn't as busy back then. I'd like to see CAKE on BSD some day.

Kind regards,
Jaap de Vos


> On 09/28/2025 1:06 PM CEST David Lang <david@lang.hm> wrote:
> 
>  
> I'm starting to prepare for the next Scale conference and we are switching from 
> Juniper routers to Linux routers. This gives me the ability to implement cake.
> 
> One problem we have is classes that tell everyone 'go download this' that 
> trigger hundreds of people to hammer the network at the same time (this is both 
> a wifi and a network bandwidth issue, wifi is being worked on)
> 
> The network is pretty flat, a couple of subnets each on ipv4 and ipv6.
> 
> Any suggestions on how to configure cake for this sort of environment where 
> there are so many devices?
> 
> David Lang
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