Dual Homed BGP

Sun Feb 16 18:27:51 UTC 2020

I just looked at the stats again we are actually at about 82%.

Erich Kaiser
The Fusion Network
erich at gotfusion.net

On Sun, Feb 16, 2020 at 11:18 AM Kaiser, Erich <erich at gotfusion.net> wrote:

> 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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