[194393] in North American Network Operators' Group
RE: SD-WAN for enlightened
daemon@ATHENA.MIT.EDU (Doug Marschke)
Mon Apr 17 11:31:15 2017
X-Original-To: nanog@nanog.org
From: "Doug Marschke" <doug@sdnessentials.com>
To: "'Kasper Adel'" <karim.adel@gmail.com>,
"'NANOG list'" <nanog@nanog.org>
In-Reply-To: <CALb2afMnGDoRCcsfkdYDq=8kQy46eAxhd=zVa-ba7=f7Gj9geg@mail.gmail.com>
Date: Mon, 17 Apr 2017 08:31:12 -0700
Errors-To: nanog-bounces@nanog.org
Hello Kasper,
I will do my best to answer your SD-WAN question, but as you mentioned =
it is a buzzword that has a bit of confusion in its definitions. I =
would say that a SD-WAN solution should have the following elements:
1.) Ability to manage multiple WAN connection and choose the path based =
on user and machine criteria (The Hybrid WAN)
2.) A controller to manage the polices and operations of the SD-WAN =
devices
3.) Analytics on the network and application level
4.) A software overlay that abstracts and secures the underlying =
networks
Currently there are a lot of solutions out there by many vendors. Some =
do all of these and some a subset, so it make the landscape a bit =
confusing. Lots of times vendors use SD-WAN when they are really just =
talking about Hybrid WAN (multiple connections) or WAN optimization.
Doug Marschke
CTO
www.sdnessentials.com
JNCIE-SP #41, JNCIE-ENT #3
415-902-5702 (cell)
415-340-3112 (office)
-----Original Message-----
From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Kasper Adel
Sent: Sunday, April 16, 2017 1:14 PM
To: NANOG list <nanog@nanog.org>
Subject: SD-WAN for enlightened
Hi,
I'm not sure if the buzzword SD-WAN is used to compensate for another =
buzzword that got over-utilized (SDN) or it is a true 'new and improved'
way of doing things that has some innovation into it.
I heard different explanation from different vendors:
1) appliances (+ controller) placed in-line to put traffic in tunnels =
based on policy, with some DPI and traffic tagging...(to do =
performance/policy based routing) over an expensive link (MPLS) and a =
cheap one (broadband) with some 'firewall-like' filtering capabilities.
2) same as above, with a flavor of 'machine learning' to find a pattern =
for traffic to optimize utilization.
3) a controller that instantiates and tears down tunnels from 'classic =
routers' based on external policies and Network based features to do =
performance based routing over an expensive link (MPLS) and a cheap one
(broadband) with encryption.
Is the above a decent high-level summary?
Has anyone tried any of these solutions, any general feedback ?
Cheers,
Kim
