Hacker News new | ask | show | jobs
by userbinator 85 days ago
You don't even need more than one NIC: https://en.wikipedia.org/wiki/Router_on_a_stick
1 comments
namibj 85 days ago
Iirc classic WRT-841 and similar "300Mbit WiFi" generation 4-100Mbit-ports Wi-Fi routers had the CPU attached via an on-SoC gigabit link to a vlan capable switch that has the 4 100BASE-TX ports exposed.
link
jack1243star 85 days ago
Are there links I can read up on this? Ethernet as on-chip bus blows my mind.

I guess it's cheaper than having to redesign an entire SoC, but still...

link
doubled112 85 days ago
These SoCs are often purpose built for networking. The CPU just connects to an internal switch chip instead of an external jack.

Mikrotik makes block diagrams of some of their Routerboards available. This is a hAP AC3, for example

https://i.mt.lv/cdn/product_files/RBD53iG-5HacD2HnD_201031.p...

It runs on a Qualcom IPQ4019 single-chip Wi-Fi system-on-chip (SoC)

link