Carrier classification

Ken Chase math at
Tue May 16 03:01:36 UTC 2017

so cogent has no routes to some amount of v6? ie no routes
to some prefixes?


On Mon, May 15, 2017 at 07:56:14PM -0700, Large Hadron Collider said:
  >My terminology of tiers are:
  >Tier 1 - is in few or no major disputes, has no transit, and is able to
  >access over three nines percent of the internet
  >Tier 2 - as Tier 1, but has transit.
  >Cogent is neither on v6, and I have no clue about v4.
  >HE is probably Tier 2 on v4, and is Tier 1 on v6.
  >On 15/05/2017 19:27, Ca By wrote:
  >> On Mon, May 15, 2017 at 6:44 PM Bradley Huffaker <bhuffake at> wrote:
  >>> On Sun, May 14, 2017 at 09:24:18AM +0200, Mark Tinka wrote:
  >>>> Nowadays, I'm hearing this less and less, but it's not completely gone.
  >>> Putting aside the question of their importance, there is a small number
  >>> of ISPs that do no pay for transit. If you don't call them Tier 1, what
  >>> do you call them? Transit Free Providers (TFPs)?
  >> I think the broader and more relevant question is -- Does it matter who
  >> pays who ? Why name an irrelevant characteristic?
  >> Cogent may not buy transit but i would not purchase their service since
  >> they fail to have full internet reach (google and HE)
  >> And xyz incumbent may have a poor network, but they may get free peering or
  >> may get paid-peering because of their incumbent / monopoly status... that
  >> is not a reason for me to purchase from them or think they are an elite
  >> tier 1.
  >> The dynamica of the day are more around reach and quality, not some legacy
  >> measure of how market-failure facilitate anti-social behavior
  >>> --
  >>>     the value of a world model is not how accurately it captures reality
  >>>     but how often it leads us to take appropriate action

Ken Chase - ken at skype:kenchase23 +1 416 897 6284 Toronto Canada
Heavy Computing - Clued bandwidth, colocation and managed linux VPS @151 Front St. W.

More information about the NANOG mailing list