Bgp

For an electronics project I’m working on I wanted a way to check the current global routing table every five minutes for both IPv4 and IPv6. I did not want to log into anyone else’s router or looking glass as checking every 5 minutes may be considered abuse. So I thought to spin up a bird routing instance. I just wanted to receive the routes, not actually install them into the kernel on my linux box. From there I’d be able to check the table size sent over. ...

A couple of interesting graphs. You can see in the following diagrams how Sandy affected the BGP table. These images I got from the CIDR report 450 AS numbers disappeared as well as roughly 3000 prefixes. Which of course gradually returned I don’t have figures for RTT to various sites as my guess is that a fair amount of trans-Atlantic traffic would’ve been quite higher. Update: RIPE has a good RTT graph over here ...