nanog mailing list archives
Re: Resilience - How many BGP providers
From: Tore Anderson <tore () linpro no>
Date: Thu, 12 Nov 2009 09:11:38 +0100
* adel () baklawasecrets com
- I could ask the question as to whether I can peer with separate routers on each of the upstreams. i.e. to protect against router failures on their side.
If you're getting transit from two different upstreams, you're pretty much guaranteed to be connected to two different routers. Unless you're thinking about establishing redundant connections to each provider, that is. What you should ensure, though, is that the PoPs of the two upstreams are not found in the same physical building (or neighbourhood for that matter), and that the fibres that connects you to those PoPs never cross - it doesn't really help that much with two trenches on each side of your building if the paths converge 1km away from it. You might also want to consider getting the fibres from two different providers to guard against contract-related disputes, unexpected bankruptcies, or similar that would cause the fibre provider to terminating/suspending your service.
- I will make sure that neither upstream peers with the other directly.
This does not make any sense, if you're talking about peering. Peering is a good thing for reliability and performance. I see from the rest of your e-mail that you're mixing up the terms peering and transit, though, so if you're taking about your provider A purchasing transit from provider B, it makes perfect sense - at least if provider A is _only_ getting transit from B. If on the other hand provider A is getting transit from C, D, and E in addition to B, it's not really a problem. It might also be the case that A and B both get transit from C only, which would make C a single point of failure for you. Best regards, -- Tore Anderson Redpill Linpro AS - http://www.redpill-linpro.com/ Tel: +47 21 54 41 27
Current thread:
- Resilience - How many BGP providers adel (Nov 11)
- RE: Resilience - How many BGP providers Dylan Ebner (Nov 11)
- Re: Resilience - How many BGP providers Jay Hennigan (Nov 11)
- Re: Resilience - How many BGP providers Steve Gibbard (Nov 11)
- Re: Resilience - How many BGP providers Richard A Steenbergen (Nov 12)
- <Possible follow-ups>
- RE: Resilience - How many BGP providers adel (Nov 11)
- Re: Resilience - How many BGP providers David Hiers (Nov 11)
- Re: Resilience - How many BGP providers Tore Anderson (Nov 12)
- RE: Resilience - How many BGP providers Dylan Ebner (Nov 11)