How to choose a transport(terrestrial/subsea)

Wed Dec 19 17:41:32 UTC 2018

Some of it is due to lazy buyers purchasing two IP ports from distinct companies without considring that two ports both located at the site are vulnerable to shared risers or entrance facilities.

- R.

________________________________
From: NANOG <nanog-bounces at nanog.org> on behalf of Mike Hammett <nanog at ics-il.net>
Sent: Wednesday, December 19, 2018 3:12 PM
To: Mehmet Akcin
Cc: nanog at nanog.org
Subject: Re: How to choose a transport(terrestrial/subsea)

If people start spot-checking this stuff more regularly, perhaps the companies being verified will take delivering the correct product the first time more seriously.

Some of it boils down to a lack of data quality about what they actually have.

-----
Mike Hammett
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________________________________
From: "Mehmet Akcin" <mehmet at akcin.net>
To: "James Breeden" <James at arenalgroup.co>
Cc: nanog at nanog.org
Sent: Tuesday, December 18, 2018 12:17:42 PM
Subject: Re: How to choose a transport(terrestrial/subsea)

That's a great example. Thank you James for sharing. I have done so many "GROUND TRUTH" visits where randomly selected certain physical points to validate physical diversity. Have seen several places where dual risers in the building were present or multiple building entries were available but not used. Ground truth events are certainly important and can be eye opening. It does not necessarily scale as you can't really walk all the fiber A-Z everywhere.. i know.

On Tue, Dec 18, 2018 at 6:49 AM James Breeden <James at arenalgroup.co<mailto:James at arenalgroup.co>> wrote:

I can't stress enough the importance of controlling your own route and even cable diversity. Require KMZs of the routes for any services you take (especially single path Wave type services). Put them in the contracts if you can.

I've had at least 1 situation where we had vendor diversity and what was supposed to be route diversity- 3 separate waves coming south and southeast out of a datacenter to 3 separate cities. Imagine my surprise when we took a outage one day that severed all 3 circuits. Yes all 3 circuits, going to 3 separate cities, on 3 separate carrier/s DWDM platforms, all happened to show up in the same sheath of cable at one location that happened to experience backhoe fade. Was not a good day....

James W. Breeden

Managing Partner

[logo_transparent_background]

Arenal Group: Arenal Consulting Group | Acilis Telecom | Pines Media

PO Box 1063 | Smithville, TX 78957

Email: james at arenalgroup.co<mailto:james at arenalgroup.co> | office 512.360.0000 | cell 512.304.0745 | www.arenalgroup.co<http://www.arenalgroup.co/>

________________________________
From: NANOG <nanog-bounces at nanog.org<mailto:nanog-bounces at nanog.org>> on behalf of Brandon Martin <lists.nanog at monmotha.net<mailto:lists.nanog at monmotha.net>>
Sent: Monday, December 17, 2018 4:59:44 PM
To: nanog at nanog.org<mailto:nanog at nanog.org>
Subject: Re: How to choose a transport(terrestrial/subsea)

On 12/17/18 3:51 PM, Mehmet Akcin wrote:
>
> One question, how much people care about vendor diversity? I do and did
> care. I don’t want to put all my eggs in one basket. Do you care? Thank you

There are advantages and disadvantages to vendor diversity.

As advantages, you won't be subject to complete loss of connection
because of a single dispute or provisioning/control plane issue with
that one vendor.  You can also more easily pit vendors against each
other for pricing if you are already vendor-diverse.

As a disadvantage, not only does vendor diversity obviously not imply
route diversity, but it will completely put the onus on you to ensure
route diversity if you want it.  With a single vendor, you can demand
that your circuits have route diversity and, assuming you trust them,
they have all the information they need to make that happen for you.
--
Brandon Martin

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