Dual Homed BGP

Sun Feb 16 17:18:31 UTC 2020

We are seeing about 79% currently that is with one of our new Akamai PNIs
in CHI and we peer at most major IXs across the US.

Top 5 peers Netflix, Google, Akamai, Amazon and EdgeCast. (In order)

Erich Kaiser
The Fusion Network
erich at gotfusion.net

On Sun, Feb 16, 2020 at 10:11 AM Mike Hammett <nanog at ics-il.net> wrote:

> "you are not going to be able to peer 85% of the traffic"
>
> It depends. If you are an eyeball ISP and you join one of the major IXes,
> you'll be near 85%.
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions <http://www.ics-il.com/>
> <https://www.facebook.com/ICSIL>
> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb>
> <https://www.linkedin.com/company/intelligent-computing-solutions>
> <https://twitter.com/ICSIL>
> Midwest Internet Exchange <http://www.midwest-ix.com/>
> <https://www.facebook.com/mdwestix>
> <https://www.linkedin.com/company/midwest-internet-exchange>
> <https://twitter.com/mdwestix>
> The Brothers WISP <http://www.thebrotherswisp.com/>
> <https://www.facebook.com/thebrotherswisp>
> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
> ------------------------------
> *From: *"Baldur Norddahl" <baldur.norddahl at gmail.com>
> *To: *nanog at nanog.org
> *Sent: *Sunday, February 16, 2020 10:08:12 AM
> *Subject: *Re: Dual Homed BGP
>
>
>
> On Sun, Feb 16, 2020 at 12:45 PM Mark Tinka <mark.tinka at seacom.mu> wrote:
>
>>
>>
>> On 25/Jan/20 02:49, Baldur Norddahl wrote:
>>
>> >
>> >
>> >
>> > The solution is to stay clear of tier 1 networks. Find a good local
>> > tier 3. Whatever you are going to do, they will do better.
>>
>> So all our transit comes from the top 7 "global" carriers. Yes,
>> including Cogent :-).
>>
>> But that only accounts for about 15% of our overall traffic. The rest
>> comes from peering.
>>
>> Mark.
>>
>>
> From the perspective of someone just starting out being dual homed, this
> will be very different. You are not going to get 7 transits and you are not
> going to be able to peer 85% of the traffic. That is why I advocate that it
> is better to buy transit from a middle tier company. Instead of getting a
> connection to just one so called global carrier, you get a package deal
> with connection to all of them and 85% peering one step removed. Plus many
> of the companies that the middle tier has a peering with, is something the
> tier 1 companies would refuse to peer (exception Hurricane Electric).
>
> Also while your company may not need dual connections to each transit, the
> situation is completely different from the perspective of a small dual
> homed customer of yours. That is a lot of paths that are lost if this
> customer where to experience a disruption to the connection to your network.
>
> This is especially true if there is an unbalance between the two chosen
> transit providers. Say the other provider is Cogent, which are famous for
> refusing to peer. That means that all those peers, unless they have a
> Cogent contract, they will need to find an indirect path to replace your
> peering.
>
> Of course I may also recommend to simply set your expectations modestly.
> Dual homing will get you redundancy but unless you line up all your ducks
> correctly, you should expect some brownouts in the case of a link failure.
> Simply tell the boss, that unless he wants to pay at least double in every
> way, there will be expected downtime in the order of 5 minuttes in the case
> of a link failure.
>
> Regards,
>
> Baldur
>
>
>
>
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