BGP peering question

Ethan E. Dee edee at
Tue Jul 11 18:40:55 CST 2017

Considering the wording you use, I would include this,

'Peering' is not always necessary. If you can get an upstream provider 
to give you a pack of IP's and it is sufficient to just use them as a 
gateway instead of setting up peering that would be preferred.

If you decide you want to have multiple upstream providers or hit some 
kind of speed cap is when I would probably peer with someone else. So 
that you can keep your IP space but share it across a redundant 
connection from a different provider.

Then you need to decide if you want to be a hop between those two peers 
or if you want them to serve you only. You can change your routing so 
that both providers know of your routes but you are not sharing routes 
between the two providers.

BGP is an enormous protocol and extremely scalable so there is alot to 
consider before you even decide if you want to peer.

Because it can sometimes be a headache to setup.

On 07/11/2017 02:17 PM, Bob Evans wrote:
> There is one more thing to consider based on your app or content latency
> criteria needs. Do you provide a service that performs better with low
> latency - such as live desktop, live video/voice. You may wish to peer to
> have more control and more direct  path to your customer base. If you
> identify your customer base in a specific region - then explore the best
> peering exchange points to utilize in that region. This can help you
> reduce your packet hop count/ deliver time, etc. etc..
> Thank You
> Bob Evans
>> On Mon, Jul 10, 2017 at 4:12 PM, craig washington <
>> craigwashington01 at> wrote:
>>> Newbie question, what criteria do you look for when you decide that you
>>> want to peer with someone or if you will accept peering with someone
>>> from
>>> an ISP point of view.
>> I assume you mean "reciprocal peering" in the sense of shortcut from your
>> customers to their customers rather than the more generic sense that any
>> BGP neighbor is a "peer".
>> 1. What does it cost? If you and they are already on an IX peering switch
>> or you're both at a relaxed location where running another cable carries
>> no
>> monthly fee, there's not much down side.
>> 2. Is the improvement to your service worth the cost? It's not worth
>> buying
>> a data circuit or cross-connect to support a 100kbps trickle.
>> 3. Do you have the technical acumen to stay on top of it? Some kinds of
>> breakage in the peering link could jam traffic between your customers and
>> theirs. If you're not able to notice and respond, you'd be better off
>> sending the traffic up to your ISPs and letting them worry about it.
>> If the three of those add up to "yes" instead of "no" then peering may be
>> smart.
>> Regards,
>> Bill Herrin
>> --
>> William Herrin ................ herrin at  bill at
>> Dirtside Systems ......... Web: <>

Ethan Dee
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