Question on peering strategies

Jac Kloots Jac.Kloots at
Mon May 23 09:00:57 UTC 2016

Hi Max,

These do exist, at least in the NREN part of the internet.

Have a look at netherlight ( and the bigger picture GLIF 
( and where you read 'lightpath' replace that with ethernet p2p.



On Sun, 22 May 2016, Max Tulyev wrote:

> Hi All,
> I wonder why a "VLAN exchange" does not exists. Or I do not know any?
> In my understanding it should be a switch, and people connected can
> easily order a private VLAN between each other (or to private group)
> through some kind of web interface.
> That should be a more easy and much less expensive way for private
> interconnects than direct wires.
> On 16.05.16 20:46, Reza Motamedi wrote:
>> Dear Nanogers,
>> I have a question about common/best network interconnection practices.
>> Assume that two networks (let's refer to them as AS-a and AS-b) are present
>> in a colocation facility say Equinix LA. As many of you know, Equininx runs
>> an IXP in LA as well. So AS-as and AS-b can interconnct
>> 1) using private cross-connect
>> 2) through the public IXP's switching fabric.
>> Is it a common/good practice for the two networks to establish connections
>> both through the IXP and also using a private cross-connect?
>> I was thinking considering the cost of cross-connects (my understanding is
>> that the colocation provider charges the customers for each cross-connect
>> in addition to the rent of the rack or cage or whatever), it would not be
>> economically reasonable to have both. Although, if the cross-connect is the
>> primary method of interconnection, and the IXP provides a router-server the
>> public-peering over IXP would essentially be free. So it might makes sense
>> to assume that for the private cross-connect, there exists a back-up
>> connection though the IXP. Anyway, I guess some discussion may give more
>> insight about which one is more reasonable to assume and do.
>> Now my last question is that if the two connections exist (one private
>> cross-connect and another back-up through the IXP), what are the chances
>> that periodically launched traceroutes that pass the inter-AS connection in
>> that colo see both types of connection in a week. I guess what I'm asking
>> is how often back-up routes are taken? Can the networks do load balancing
>> on the two connection and essentially use them as primary routes?
>> Best Regards
>> Reza Motamedi (R.M)
>> Graduate Research Fellow
>> Oregon Network Research Group
>> Computer and Information Science
>> University of Oregon

Jac Kloots
Network Services
SURFnet bv

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