Peering - Benefits?
pstewart at nexicomgroup.net
Fri Oct 31 16:56:25 UTC 2008
Why does the controversy word keep coming up? You're the third person
now to ask if I was trying to provide controversy and for the third time
, NO I AM NOT.
And again, I *do* understand the issues at hand - although some new
viewpoints I hadn't considered before came up and thank you.
My question should have read specifically - "what points do you make
with senior management to move towards larger, more diverse peering
options compared to today?"
Thank you however - I do have all the info I require and we're moving
From: Tomas L. Byrnes [mailto:tomb at byrneit.net]
Sent: Thursday, October 30, 2008 10:34 PM
To: vijay gill; Paul Stewart
Cc: nanog at nanog.org
Subject: RE: Peering - Benefits?
As with all things, this isn't so cut and dried as everyone makes it
seem. The OP was asking for an easy answer to a complex question, which
usually shows a lack of understanding of the issues, or is an attempt to
So far, most of the discussion has focused on peering as a substitute
The idea behind peering is not that the peer takes your traffic destined
for other networks, but that you each deliver the traffic destined for
each other directly, without the need to transit.
This should save BOTH of you $ on transit, reduce routing complexity for
the peered networks, make troubleshooting traffic issues between the
networks easier, and improve user experience.
Common examples of where peering makes a lot of sense are:
Major hosting providers to major national end-user networks.
CDNs to end-user networks.
Local data centers and DR facilities to metropolitan Ethernet providers.
Hosting facilities to networks that service certain specific user
communities, such as local realty MLS systems to the local cable and DSL
If you're using peering for transit, you're kind of missing the point,
and introducing a lot of potential network (route leakage or excessive
route prepends) and business (at what point does a transit imbalance
become unfair) problems.
IMO, peer for direct delivery, use transit for all else.
>From: vijay gill [mailto:vgill at vijaygill.com]
>Sent: Thursday, October 30, 2008 7:20 PM
>To: Paul Stewart
>Cc: nanog at nanog.org
>Subject: Re: Peering - Benefits?
>This is probably going to be a somewhat unpopular opinion, mostly
>because people cannot figure out their COGS. If you can get transit
>for cheaper than your COGS, you are better off buying transit and not
>peering. There are some small arguments to be made for latency and
>'cheap/free' peering if you are already buying transit at an exchange
>and your port/xconn fee is cheaper than your capital/opex for the
>amount of traffic you peer off.
>To be completely realistic, at current transit pricing, you are almost
>always better off just buying transit from two upstreams and calling
>it done, especially if you are posting to nanog asking about peering.
>On Wed, Oct 29, 2008 at 12:17 PM, Paul Stewart
><pstewart at nexicomgroup.net> wrote:
>> Hi there...
>> I'm in a meeting next week to discuss settlement-free peering
>> always an interesting time. A push is on (by myself) to get into
>> physical locations and participate on the peering exchanges.
>> Besides costs, what other factors are benefits to peering?
>> I can think of some but looking to develop a concrete list of
>> reasons etc. such as:
>> -control over routing between networks
>> -security aspect (being able to filter/verify routes to some degree)
>> Just looking for other positive ideas etc...;)
>> "The information transmitted is intended only for the person or
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