BGP Peer Selection Considerations
steve at ibctech.ca
Mon Nov 9 20:43:48 CST 2009
adel at baklawasecrets.com wrote:
> Thanks to everyone that replied to my post on failover configuration. This has lead me to this post. I'm at a point now where I'm looking at dual-homing with two BGP peers upstream. Now what I am looking at doing is as follows:
> BGP Peer with Provider A who is multihomed to other providers.
> BGP Peer with Provider B who is not peered with provider A
> 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
...I've likely missed something, but get the IP/ASN for yourself.
*ensure* that A & B will peer and provide transit for you.
> (they say they have a diverse "fibre backhaul network"). This is quite attractive from a support and billing perspective.
...until you find out that the backhaul network is owned by Provider B,
or virtualized within an existing circuit to someplace else.
> Also suspect that provider A will be able to get more attractive pricing from Provider B than I would be able to.
But at what cost?
> Am I missing things that I need to consider?
I think so. Long-term survival for one.
If you are budgeted for a diverse and redundant network, then I
recommend that you ensure one. My current understanding is that you can
negotiate terms with potential providers where there is competition.
Don't allow any of your ISPs to manage/dictate the use of your address
space. It will bite you, and cause undue frustration.
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