Looking backward at last week or forward into next week.
unregenerate – adj. not reformed, unreconstructed, obstinate, stubborn
Easy to forget that existing Industrial IT systems are highly centralised. Distributing complexity for IOT to edge is a wholly new concept.
— EtherealMind (@etherealmind) August 14, 2016
The Law of Requisite Variety – Ashby’s Law
Synchronisation in networked systems is undesirable. There is a control systems law about this:
If a system is to be stable, the number of states of its control mechanism must be greater than or equal to the number of states in the system being controlled. Ashby states the Law as “variety can destroy variety”. He sees this as aiding the study of problems in biology and a “wealth of possible applications” . He sees his approach as introductory to Shannon Information Theory (1948) which deals with the case of “incessant fluctuations” or noise. The Requisite Variety condition can be seen as a simple statement of a necessary dynamic equilibrium condition in information theory terms c.f. Newton’s third law, Le Chatelier’s principle.
How Many Ports in 2016 ?
The current generation of merchant silicon has 32 × 100 GbE channels ( more correctly, its 125 x 25GbE channel which can be bonded into 64 × 40/50 GbE or even 128 × 25 GbE port
If you allocate 16 x 100GBE ports to server and 16 x100GBE to ECMP spine uplinks for a zero blocking architecture. Thats more than most private clouds will ever needs.
Basically, we don’t need 48 port switch anymore. Arguably, I would be fine with 16 x 100GBE with 8 ports to the spine and 8 ports for servers broken down into 32 x 25GBE ports to my servers.
It seems to me that graph theory is behind (nearly) everything in networking. What is graph theory ? If you don’t know here is a place to start.
Satya Nadella just fixed Microsoft’s biggest problem
For as long as I can remember there have been two Microsofts: Microsoft Sales and everyone else. It’s a split that exists in most tech companies, but those that are most successful at the moment have a different divide; Google is Engineering and everyone else, AWS is Engineering and everyone else, Apple is Product and everyone else.
I read this and thought Cisco and other incumbent network companies have just started on this transformation.
Open is Greater Than Closed
From a venture capitalist, a late/belated realisation that open can be greater than closed.
I'm only reading this report because someone wrote it.
— EtherealMind (@etherealmind) August 9, 2016
This article is solid but brief introduction to the QUIC protocol .
I’ve been allocating a lot of time to understand QUIC which moves the web from HTTP/TCP/IP to HTTPS/UDP/IP. Recent presentations at the IETF shows the QUIC is substantially faster is almost all conditions.
We might be seeing the end of TCP/IP, certainly it will become less important.
O’Reilly Safari Books.
O’Reilly Safari book library has undergone a big change and its now USD$199 per year for a subscription. This has replaced my previous obsession with buying overpriced and overlarge text books. It used to be $400 a year so its much cheaper.
Highly recommended. Not just for networking books but all types of technology. Mostly I look at programming, computing and reference text books.
Arista Revenue of $268.74M is up +37.4% Y/Y, better profit margin than Cisco. (I guess this is why its taking them to court)
— EtherealMind (@etherealmind) August 5, 2016
Commoditisation and mass manufacture changes how technology is consumed.