PSA: Internet Edge Router FIB Growth

I've recently been doing some work on scoping internet routers that need to take full tables BGP.

There are various platforms out there that can install up to 1 million IPv4/IPv6 routes in the FIB.

Problem is, there's a pretty decent chance that 1 million FIB entries will be too small in as little as 18-24 months. The risk is high for anything that will have a >4 year asset life. Here's a decent article:

http://bgphelp.com/2017/01/01/bgpsize/

The TL;DR is that if you are looking to buy internet routers with a 4-6 year asset life, you should probably be looking for 1.5 million FIB entries as a minimum.