A little while ago I wrote about the differences between routing and
switching, or probably more the difference between ethernet and IP
forwarding. The focus of that article was very much on the differences
between the two from a forwarding hardware perspective. This article last
week from Brent Salisbury triggered a bunch of additional thoughts around
scale and size.
As some sense of disclosure, in my previous job at Nortel/Avaya I was part of
the team that pushed Shortest Path Bridging (SPB) spearheaded by Paul
Unbehagen. I am a fan of SPB, I believe it is an extremely well thought out
mechanism to provide network based virtualized ethernet networks with many
real life practical roots in the learnings from MPLS and early more static
solutions like PBB and PBT.
One of the questions I have been asked many times with respect to SPB is:
"how big can I scale my SPB m... (more)
Our first generation of data center switching products brought together SDN
and photonic switching in support of an application-driven movement we call
Affinity Networking. Our central thesis has long been that our industry has
to collectively move beyond what has been a static networking environment.
The challenges of managing edge policy have only gotten worse as the
infrastructure around the network has become more fluid. It stands to reason
that the network simply had to transition as well, from static to responsive.
The notion that the network needs to be more of a willing pa... (more)
With the launch of Cisco's software-defined networking startup Insieme
expected tomorrow, our industry is about to hear a lot about
"application-centric" everything. So what does "application-centric
First, some basics: Networking is about connecting computing devices and
systems so they can share data. Networking infrastructures are built with a
combination of hardware such as gateways, routers, and switches that manage
the movement of the data as well as software applications that enable you to
do things like access the Internet and send email.
As you co... (more)
The biggest difference between high-performance teams and more average teams
is that the high-performance group actually acts like a team.
That statement is so obvious, I am going to let it stand on its own.
If you look at most groups, they tend to act less like teams and more like
loose affiliations of individuals that are connected through a common
manager. The manager is an orchestrator, maybe even a facilitator at times,
but that doesn’t mean the group is really a team. Rather, they are
individual contributors that are linked by a common task management protocol.
Too many peo... (more)
SDN is almost universally associated with disruption; the general consensus
being that it is a significant departure from the way networking has been
handled for decades. Insofar as SDN marks a major architectural shift, it
absolutely should be considered a disruption. But how does disruption relate
to innovation in general? And how do customers navigate an environment that
is subject to disruption?
It certainly is not the case that all innovation is disruptive. In the
general case, an existing architecture serves as the starting point for
innovation. From that starting point, t... (more)