BGP Peer Selection Considerations

adel at adel at
Tue Nov 10 23:00:08 UTC 2009

I've decided to get transit from provider B independently of A, so I don't create a conflict of interest as mentioned below.  However I think that I will have to use provider A's dark fibre network to connect to both peerings.  Provider A tells me that they will use different routes and different entry points to get to their peering and separate routes, entries to get to B's peering.  As they own the datacentre and can probably provide the bests costs for getting into the datacentres where the second transit provider is, I think I will have to use 

I should mention there are no transit providers on net at the datacentre facility which has been acquired by the business.  I suspect it will be cheaper to get the cross connects to where the transit provider is from provider A, (did I mention provider A owns the datacentre?).  I know I'll be sacrificing some resilience by using A's network to get to both Internet services, however I think I will just have to outline the risks to the business and go with it.  Moving datacentres isn't an option and as long as I understand exactly what resilience I sacrifice by getting A to provide all the cross connects, I can explain that to the business.


On Mon   7:10 PM , William Herrin <herrin-nanog at> wrote:

> On Mon, Nov 9, 2009 at 12:40 PM,  wrote:
> > I have an existing relationship with provider A, colo, cross connects
> > etc.  Provider A has offered to get the PI space, ASN number,
> > purchase the transit for us with provider B and manage cross
> > connects to provider B (they say they have a diverse "fibre
> > backhaul network").  This is quite attractive from a support
> > and billing perspective.  Also suspect that provider A will be
> > able to get more attractive pricing from Provider B than I
> > would be able to.
> >
> > Am I missing things that I need to consider?
> What happens when provider A is bought by provider C and you want to
> dump provider C but keep provider B? You'll have created a conflict of
> interest for provider B in any negotiation you have with them.
> Be aware that provider A's diverse network for provider A's service is
> the same diverse network they'll use to connect you to provider B. As
> a result, many or most of the outages which impact provider A will
> also impact your connectivity to provider B, defeating the central
> purpose of having a provider B.
> Regards,
> Bill Herrin
> -- 
> William D. Herrin ................ herrin at bill at
> 3005 Crane Dr. ...................... Web: 

More information about the NANOG mailing list