editor's blog
Subscribe Now

The Other KBP

We looked today at Netlogic’s NETL7 “knowledge-based processors” (KBPs). But the KBP category contains more than just this family: it also contains one called Sahasra.

But the Sahasra products aren’t just more of the same of what’s in NETL7. NETL7 deals with packets all the way to the application layer (layer 7) in the OSI stack. That’s the essence of deep packet inspection (DPI): you’re not just looking at various enclosing headers, you’re diving all the way in. That’s equivalent to moving all the way up the stack to the original application payload.

By contrast, the Sahasra products only deal with layers 2-4. These are fundamentally for packet and flow routing. The Sahasra KBPs are intended to speed things up by implementing very specific tables or databases that are specific to a particular layer or protocol. IP routing tables are a simple example of this sort of thing.

So while the NETL7 KBPs consist of engines processing match patterns, the Sahasra KBPs essentially provide dedicated fast lookup of the kinds of things needed to route packets.

I guess they’re both “processors” that work based on some knowledge – rules in one case, route or other packet information in the other – but, aside from that, they’re different beasts.

And, quite by chance (from a coincidental timing standpoint), they just announced this week volume production of their IPv6 KBP

Leave a Reply

featured blogs
Mar 26, 2019
It's CDNLive! Well, not today, Tuesday and Wednesday, April 2nd and 3rd at the Santa Clara Convention Center. So I have eight things you can do to get the most out of CDNLive and go home with a... [[ Click on the title to access the full blog on the Cadence Community si...
Mar 25, 2019
Do you ever use the same constraint templates in multiple projects? Now, with PADS Professional VX.2.5, you can easily import and export constraints from one project to the next. Constraint templates enable application of complex rules to multiple nets. They help ensure a smo...
Mar 22, 2019
In the video above, it might not appear that much is taking place, but just like with transformers there is “more than meets the eye.” Alright, that was corny, and I am mildly ashamed, but Nanosecond Event Detection for shock and vibration is nothing to be ashamed...
Jan 25, 2019
Let'€™s face it: We'€™re addicted to SRAM. It'€™s big, it'€™s power-hungry, but it'€™s fast. And no matter how much we complain about it, we still use it. Because we don'€™t have anything better in the mainstream yet. We'€™ve looked at attempts to improve conven...