BGP is the backbone protocol and the internet’s “glue,” which directs the routing decisions between ISP networks to hold the internet under a set.
In short, this protocol, BGP, is completely an essential element necessary for the internet’s proper functionality.
Edge device software implementing BGP isn’t perfect, with both commercial and open-source versions showing issues in this crucial routing protocol.
https://cybersecuritynews.com/bgp-error-handling-flaw/