[190301] in North American Network Operators' Group
Re: IP and Optical domains?
daemon@ATHENA.MIT.EDU (Jason Iannone)
Wed Jun 22 11:57:21 2016
X-Original-To: nanog@nanog.org
In-Reply-To: <CAPLq3UNr1R=wwYwhPpL+3EgFekotZY0P6y-Fgu4rNhgyn3Vf3A@mail.gmail.com>
From: Jason Iannone <jason.iannone@gmail.com>
Date: Wed, 22 Jun 2016 09:56:56 -0600
To: Glen Kent <glen.kent@gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
The IP and Transport groups are customers of each other. When I need
a wire, I ask the Transport group to deliver a wire. This is pretty
simple division of labor stuff. Transport has the intimate knowledge
of the layer 1 infrastructure and IP has intimate knowledge of
services. Sure there is information share, but I don't need to assign
wavelengths or protection groups or channels. I don't need to know if
I'm getting an OTU or some other lit service (except when I do need to
know). We use clear jargon to order services from each other.
"Please deliver two diverse, unprotected circuits between cilli1 and
cilli2." If I want LACP or spanning-tree, I want OTU or another means
of ensuring L2 tunneling, so I either predefine these requirements
before we start our relationship or I explicitly order it.
When I think of converging IP and Transport, I think of combining the
extraordinary depth of knowledge required by each group's individual
contributors. You just turned your 100k employee into a 175k
employee. On top of that, add that we're all becoming software
developers and you've got a three horned unicorn. In the end I guess
this is the cycle of convergence to distribution and back writ HR.
On Sat, Jun 18, 2016 at 3:27 PM, Glen Kent <glen.kent@gmail.com> wrote:
> HI,
>
> I was reading the following article:
> http://www.lightreading.com/optical/sedona-boasts-multilayer-network-orchestrator/d/d-id/714616
>
> It says that "The IP layer and optical layer are run like two separate
> kingdoms," Wellingstein says. "Two separate kings manage the IP and optical
> networks. There is barely any resource alignment between them. The result
> of this is that the networks are heavily underutilized," or, from an
> alternative perspective, "they are heavily over-provisioned."
>
> Can somebody shed more light on what it means to say that the IP and
> optical layers are run as independent kingdoms and why do ISPs need to
> over-provision?
>
> Thanks, Glen
