[AusNOG] What Transit Providers Would You Pair Together

[James Braunegg]

Dear James



I always start my research on http://bgp.he.net/  looking up each potential AS and then compare the common peers and make a list of few IP addresses which they are advertising (ie Prefixes)



Once I have fined tuned a few providers I use http://www.lookinglass.org/  and pick a handful of looking glasses locally and from around the world.



ie local peering looking glasses and local transit providers in each state followed by looking glasses from a handful of each part of the world.



I would then suggest doing a trace route from each looking glass (around the world)  to different IP's within that providers prefix list from each potential  AS and compare the inbound trace towards that network between different IP ranges and different providers and your current provider. The above should give you a good idea of inbound paths, and how diverse or common they are. Finally once you have narrowed down your search I would then ask the provider for an outbound trace to certain networks. Without bound traffic this is slightly different again depending if your taking full routes / partial or a default route, you might let BGP do its thing, or you might create route maps for each provider or use software to optimize outbound routes.



Hope this helps



Kindest Regards

James Braunegg
P:  1300 769 972  |  M:  0488 997 207 |  D:  (03) 9751 7616
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-----Original Message-----
From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of James Mcintosh
Sent: Friday, November 01, 2013 7:20 AM
To: ausnog at ausnog.net
Subject: [AusNOG] What Transit Providers Would You Pair Together



Hi Noggers,



We're looking at adding a second transit provider for redundancy (and hopefully more-or-less even load balancing). I was wondering what transit providers people would recommend pairing together to get the most diverse set of routes. Obviously you don't want your two upstreams to have very similar routes and paths.



As a start I was thinking perhaps a Gang of Four provider plus a non-Go4 provider would make a good pairing but I'd really appreciate the comments of some of the more experienced BGP gurus on the list.





-James

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