Re: Dual Homed BGP

[Baldur Norddahl <baldur.norddahl () gmail com>]

Hello

My numbers for the last 7 days:

NL-IX 2107 22%
STHIX 412 4%
Cache (netflix+akamai) 3070 32%
Telia 1118 12%
Cogent 258 3%
HE 2490 26%
= 9455 100%

The numbers being average (not peak or 95 percentile) inbound. Outbound is
irrelevant for us.

I suppose that if you consider Hurricane Electric as a poor mans peering
service, we would be up there as well.

This is for volumen however. Almost everything breaks if we loose the
transits. It is not like you are 80% ok.

Regards,

Baldur



On Sun, Feb 16, 2020 at 7:28 PM Kaiser, Erich <erich () gotfusion net> wrote:

> I just looked at the stats again we are actually at about 82%.
>
>
> Erich Kaiser
> The Fusion Network
> erich () gotfusion net
>
>
>
>
>
> On Sun, Feb 16, 2020 at 11:18 AM Kaiser, Erich <erich () 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 () gotfusion net
> >
> >
> >
> > On Sun, Feb 16, 2020 at 10:11 AM Mike Hammett <nanog () 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 () gmail com>
> > > *To: *nanog () 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 () 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