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Re: PSINet and C&W peering

  • From: rich
  • Date: Tue Jun 05 10:40:01 2001

oddly enough this looks exactly like the statments made by a few
providers when PSI decided to de-peer.

what goes around comes around.

On Tue, 5 Jun 2001, Mitchell Levinn wrote:

> C&W did indeed shutdown their peering connections to PSINet
> this weekend.  While there are many potential explanations
> for their actions, I have no visibility into their decision
> process.  I am disappointed with their decision to disconnect.
> PSINet continues to seek a resolution with C&W to restore normal
> connectivity in order to avoid further negative impact to both
> companies and the Internet.  Their decision is hard to understand
> based on the following:
> - C&W and PSINet upgraded circuits used for peering between
>   the two networks earlier this year.  C&W's recent action
>   seems inconsistent with the strategy that led to these
>   upgrades.
> - PSINet's recent addition of direct private peering with several
>   of C&W's transit customers relieved the peering connections
>   between the networks of a couple hundred Mbps of traffic
>   (improving connectivity overall and, undoubtedly, lowering costs
>   for those transit customers).  This is significant only because
>   C&W claims PSINet no longer has sufficient traffic to justify
>   the connections according to their published standards.  In
>   fact, PSINet's overall traffic continues to grow.
> - Most of the PSINet traffic previously destined for sites
>   behind C&W has alternative paths through other providers.
>   While this sounds like a generally good thing, especially given
>   the actions C&W has taken, it does make it difficult for those
>   that require certain traffic levels to be maintained consistently
>   for peering.  Specifically, C&W's customers (or C&W itself) could
>   alter "natural" traffic flow to favor (or not) various connections
>   to meet their published standards (or not).  PSINet demonstrated
>   to C&W that if naturally less favorable announcements were
>   preferred, PSINet could make an almost arbitrarily large (or
>   small) amount of traffic flow between the peers.  Even so, in
>   C&W's opinion, PSINet will not be able to comply with their
>   peering policy's traffic standards.  It is gratifying to note
>   that even without C&W peering, substantially all of the
>   traffic previously flowing between PSINet and C&W continues to
>   be delivered.
> - At this time PSINet has not disabled the C&W peering interfaces
>   nor decommissioned any facilities.  If C&W chooses to, they can
>   re-enable interfaces on their side and bring back the connectivity
>   lost between their non-transit customers and PSINet.  PSINet
>   remains open to discuss with them a new bilateral peering
>   agreement if they so choose.
> PSINet remains committed to servicing its customers and the Internet
> with the best possible infrastructure and policies.  PSINet still
> maintains hundreds of peering connections with other ISPs throughout
> the world.  While posting about matters between PSINet and its
> peering partners is not typical, the circumstances and questions
> arising from C&W's decision required some clarification.  Hopefully
> this additional clarification helps everyone understand the current
> situation.
> -Mitch Levinn
>  PSINet


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