[119226] in North American Network Operators' Group
Re: BGP Peer Selection Considerations
daemon@ATHENA.MIT.EDU (adel@baklawasecrets.com)
Tue Nov 10 04:53:47 2009
To: <nanog@nanog.org>
Date: Tue, 10 Nov 2009 09:52:59 +0000
From: adel@baklawasecrets.com
Reply-To: adel@baklawasecrets.com
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
If nothing else by the time this deployment is finished I will surely have =
become extremely cynical. Now reading through peoples answers, I think the=
general consensus is that
I would be giving too much control to provider A in the scenario I suggeste=
d below. So as someone mentioned they have the ability to foul up my conne=
ctions all by themselves.
>From all of this I gather that the most resilience would be provided by:
1) Go to two tier 1 carriers myself - say Global Crossing and Level 3. Arr=
ange to get two 100meg BGP feeds, burstable. Pick them up at different dat=
acentres as well I suppose to provide=20
datacentre redundancy? Negotiate pricing, any tips on negotiating apprecia=
ted.
2) Arrange cross connects to these providers i.e. get to the datacentres th=
e Tier1 providers are in. They are not on net at the colo we are in. With =
regards to arranging the cross connects=20
am I able to ask the cross connect providers for fibre maps? Is this a don=
e thing or will they brush me off with "you don't need this our network is =
diverse?"
3) Arrange for PI space and ASN myself, so become an LIR through RIPE.
Do I really lose a lot by asking Level3 or GBLX to get the PI and ASN for m=
e? I think the failure mode cited by someone was if the PI and ASN provide=
r goes out of business. I would prefer=20
not to go through becoming an LIR and maintaining the membership, as they a=
re not an ISP and so it is more attractive to do that through one of the Ti=
er 1 providers.
I'm not sure what my options are in terms of getting to the datacentres to =
pick up the Tier1 providers. The "provider A" below has said they run a d=
iverse fibre backhaul network etc etc.=20
and I should go with them for connectivity to other datacentres. Now it wo=
uld be easier to go with them just because they are running colo for us and=
they run the datacentre we are in. =20
However I assume that I should not be scared of arranging a second cross co=
nnect with someone else altogether.
In all of the above, I'm most worried about administrative overhead. Mana=
ging two cross connect providers, managing ongoing relationship with two Ti=
er1 providers and so on. However=20
resilience comes at a cost I suppose is the answer.
Comments appreciated.
Adel
On Mon 7:10 PM , "William Herrin" herrin-nanog@dirtside.com sent:
> On Mon, Nov 9, 2009 at 12:40 PM, <adel@
> baklawasecrets.com> wrote:> I have an existing relationship with provider=
A,
> colo, cross connects> etc. =C2=A0Provider 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"). =C2=A0This is quite
> attractive from a support> and billing perspective. =C2=A0Also suspect th=
at
> 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.
>=20
> 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.
>=20
> Regards,
> Bill Herrin
>=20
>=20
> --=20
> William D. Herrin ................ herrin@di
> rtside.com bill@herrin.us
> 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>Falls =
Church, VA 22042-3004
>=20
>=20
>=20
