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Re: Cogent/Level 3 depeering
- From: Patrick W. Gilmore
- Date: Thu Oct 06 15:28:17 2005
On Oct 6, 2005, at 2:57 PM, Richard A Steenbergen wrote:
On Thu, Oct 06, 2005 at 01:59:01PM -0400, Patrick W. Gilmore wrote:
You are mistaken.
If I sent 100 Gbps outbound and 20 inbound, I can sell 40-60 Gbps of
additional inbound for FAR, FAR less than 40-60 Gbps of additional
Zero cost? Probably not. Trivial cost? Possibly, depends on
Patrick, I keep telling you, you are not an ISP. :)
Yes clearly there is SOME reduction in equipment cost at the edge, you
Please note the "Possibly, depends on network" comment.
need to buy fewer peering and transit ports if there is available
on a full duplex circuit in the opposite direction. You may also
savings on the customer edge where you are utilizing the extra
the opposite direction on trunk ports out of your aggregation layer.
Unfortunately in the core traffic is traffic, and you usually don't
such an obvious "but I have this extra capacity in the other
pattern. The opex cost of hauling the bits that other folks hot potato
onto you is going to quickly negate the capex cost of the equipment. I
know you don't deal with this, since as we've already established
not an ISP, but the cost of longhaul circuits (even very large and
negotiated ones between major cities on major routes) is huge. The
per meg to get a bit from one side of the US to the other is
to or above what people are selling transit for per meg these days,
many cases that doesn't take into account non-perfect utilization
need for backup capacity on diverse paths. There is nothing trivial
this cost for an actual network, and this completely different from
a rule of 95th percentile billing to squeeze some extra service out of
someone else's network for free.
There are ABSOLUTELY networks where their backbone circuits are empty
but their tail circuits to the peering locations are used in one
direction. There are networks which have cities / POPs / regions
pushing or pulling more than the opposite. There are lots & lots of
various configurations where you can plop down a sink or a source and
know that they will be utilizing unused resources.
Doing so, and selling it at a discount, is simply good business.
Sorry if your network isn't like that, but that doesn't make it so
Oh, and I'd argue you ain't an ISP either. :)