Carrier classification

joel jaeggli joelja at bogus.com
Tue May 16 04:10:53 UTC 2017


On 5/15/17 10:01 PM, Ken Chase wrote:
> so cogent has no routes to some amount of v6? ie no routes
> to some prefixes?

it's easy enough to test

Test	Router Location	Hostname / IP Address	
		
2607:f8b0:4005:801::200e
Go!
Tue May 16 04:00:27.010 UTC
% Network not in table

http://www.cogentco.com/en/network/looking-glass

They're not the sole provider with a hole in their routing table, nor is
that the only hole. I would probably choose not to single home behind
any nominally SFI carrier, but on the other hand how useful such carrier
is in the first place has a lot to do with can they offload the traffic
you choose to send them, which is a different problem and should be
assessed accordingly.


> /kc
> 
> 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 caida.org> 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
>   >>>
>   >
> 


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