nanog mailing list archives

Re: Bandwidth Upgrade


From: "Scott Weeks" <surfer () mauigateway com>
Date: Thu, 17 Nov 2011 15:21:25 -0800


--- dwbielawa () liberty edu wrote:
From: "Bielawa, Daniel Walter" <dwbielawa () liberty edu>

My team is in the process of putting some documentation together to justify 
a bandwidth upgrade. I am asking if you would be willing to reply back to me, 
with how you decide that it is time to upgrade your bandwidth. On-line or 
off-line reply's will be acceptable.
--------------------------------------------------------


Empirical data rules; WAGs don't...  ;-)  If you have a year's worth of traffic graphed, extrapolate the growth to find 
out when you will hit about 85%-90% of the capacity of the circuit at peak load.  Find out how long the providers in 
your area take to turn up a circuit of the type and size you need.  Then work backwards from there, so that the circuit 
is in production when you hit that percentage of utilization.  Your particular numbers will depend on your growth rate.

scott


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