Sent from my iPhone
On Dec 24, 2016, at 15:51, Mike Hammett <nanog@ics-il.net> wrote:
I've asked Broadcom directly, but being as though I don't have an intent to buy tens of thousands of chips (or any at all), I don't expect I'll hear back. I was hoping someone here would have some insight.
Do any of you know what functionality is available on those chips? That's the chip that powers the Ubiquiti 10G switches and I figured I would limit my most aggressive feature requests to things they can actually deliver with the platform as is.
Other than things you just assume a managed switch has like 802.1p and 802.1q, it mentions an advanced ContentAware™ Engine (which means?), IEEE1588 (sync over Ethernet), 802.1ag (OAM stuff), "Enhanced DoS attack statistics gathering" (which means?), "IPv4/IPv6 L3 packet classification" (which means?), etc.
I'm sure there's an array of things to ask about, but MLAG and S-Flow are at the top of my list at the moment.
MCLAG is a control plane function. Sflow on devices that don't generate it in a distributed fashion is done but punting sampled packets to the control-plane for classification by an sflow agent. Sample rate is therefore contingent on adequate CPU and control-plane bandwidth. The greyhound switch SOC may be hampered by the amount of CPU available locally, but the 2MB packet buffer also is probably cause for caution.
https://www.broadcom.com/products/ethernet-connectivity/switch-fabric/bcm534...
----- Mike Hammett Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP