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North American Network Operators Group
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Re: Cogent and Level3 Peering Issues
- From: Petri Helenius
- Date: Wed Dec 18 16:41:04 2002
william@elan.net wrote:
Thing is if your connection is completely full one way, it'll effect
traffic the other way too. It should not be happening with syncronyous
connections, but practical observation is that it does! I suspect router
hardware is to blame (possibly packet cache is way full) and I'v seen
it happen only if you try to send 100% more traffic then link can handle
(just 100% traffic does not efect it - have to really push it), this
happened on 100Mb and even on Gb interface.
Or could it be that your ACK packets just simply get delayed enough for
the traffic
to the other direction to suffer somewhat?
This is quite common phenomenan in asymmetric links but also exists for
symmetric
ones.
Pete
On Wed, 18 Dec 2002 alex@yuriev.com wrote:
Me thinks Cogent doesn't have a problem with congestion on the inbound
direction. Fix your reverse path.
Customers of Cogent should be/are more concerned about congestion on the
inbounds at Level3 <-> Cogent; outbound is way too easy to control.
Cogent has a pile of available inbound - websites tend to send traffic out,
not take traffic in.
Alex
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