The Border Gateway Protocol (BGP) is a fundamental routing protocol of the internet which allows big networks (“autonomous systems”) to decide which paths to use to route traffic between each other [1].

Specifically, given some autonomous systems which connect to others, BGP allows systems within an autonomous system to reach …

Connectivity Outages

There is a mailing list hosted here which tries to centralize reporting of outages across communications infrastructure (networks).

NANOG is a broader intentioned group, but one which typically will report or opine on outages as well.