[Ronja] switch with RONJA

[Bruce M Simpson]

stoiko at mail.bg wrote:
> Hello
>
> Look this switch based on RTL chipset    http://lan.neomontana-bg.com/cs8p.php
>
> This switch have  bandwith limit on each port (upload/download)  
> 128Kbit, 256Kbit, 1MBit, 2Mbit, 4MBit, 8M
>
> Price is only 13$
>   

Thanks for the pointer.

Sounds like it's yet another OpenRRCP compatible switch ASIC, and 
there's plenty of those around:
    http://openrrcp.org.ru/hardware

I'm wary of RRCP -- it seems that it's completely disabled on most new 
hardware, and even when it hasn't been fused out, soldering pullups to 
TQFP packages is a pain in the behind.

For more practical FSO-ISP use, needing another external microcontroller 
to do RRCP to SNMP in such a design, (for it *is* the standard), is also 
a pain in the behind, leaving aside the consideration of the time cost 
for writing software to do that.

Anyway, to get back to what clock said.

This is a store-and-forward switch ASIC. Realtek sheets state clearly 
the bandwidth throttling uses 802.3x flow control as its throttling 
mechanism rather than early drop.

802.3x PAUSE should "just work" over a RONJA link, but of course it 
assumes the guys at the other end of the link are in your Ethernet 
broadcast domain -- which might be too much network intimacy for some 
individuals.,

I believe this capability however is independent of its ability to 
generate 10MHz link beat, which is what RONJA requires, and this is what 
clock was getting at.

later
BMS