Over at the Networking Nerd, Tom has an interesting post up about openflow—this pair of sentences, in particular, caught my eye—
The side effect of OpenFlow is that it proved that networking could be done in software just as easily as it could be done in hardware. Things that we thought we historically needed ASICs and FPGAs to do could be done by a software construct.
I don’t think this is quite right, actually… When I first started working in network engineering (wheels were square then, and dirt hadn’t yet been invented—but we did have solar flares that caused bit flips in memory), we had all software based switching. The Cisco 7200, I think, was the ultimate software based switching box, although the little 2ru 4500 (get your head out of the modern router line, think really old stuff here!) had a really fast processor, and hence could process packets really quickly. These were our two favorite lab boxes, in fact. But in the early 1990’s, the SSE was introduced, soldered on to an SSP blade that slid into a 7500 chassis.
The rest, as they say, is history. The networking world went to chips designed to switch Continue reading
Verizon will continue to offer managed hosting and cloud services.
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