[110502] in North American Network Operators' Group
Re: Estimate of satellite vs. Land-based traffic
daemon@ATHENA.MIT.EDU (Sean Donelan)
Wed Jan 7 01:26:57 2009
Date: Wed, 7 Jan 2009 01:26:48 -0500 (EST)
From: Sean Donelan <sean@donelan.com>
To: Paul Donner <pdonner@cisco.com>
In-Reply-To: <49641E06.9050605@cisco.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
On Tue, 6 Jan 2009, Paul Donner wrote:
> WRT Kevin's query, if you are concerned about a solar incident and it's
> affects on satcom, you might want to take a look at what user base (e.g.
> which mobile users and what impact loss of comm will have on what they are
> doing) is affected rather than understanding the volumes that are affected as
> this might provide a much more thorough understanding of any impact. But
> that is merely my two cents worth.
Yep, consider the Galaxy IV satellite incident. The loss of a single
satellite had a significant impact on its user population for several
days/month. Other satellites can be moved into an orbital slot, and
dishes can be re-pointed; but Galaxy IV lead to some interesting (i.e.
unexpected to some users) failures. I'm not sure how many hospitals
realized their "in-house" pager systems relied on a satellite.
