BGP Zombies - Ghost routes as seen by BGP monitoring platforms

Описание: Recent research studies highlighted a phenomenon known as “BGP zombies", which refers to active RIB entries for prefixes that have been withdrawn, but still persist in BGP routing tables.
The research has investigated the prevalence and characteristics of BGP zombies, with a focus on data collected from RIPE RIS, and found that ASes announcing a high number of prefixes, and also prefixes with a higher degree of "noise" (e.g. BGP beacons), are more likely to have BGP zombies.
In this presentation, we aim to raise awareness to the BGP zombie phenomenon and extend previous work by investigating:

• the identification of BGP zombies using a BGP monitoring platform other than RIPE RIS (namely the Code BGP Platform) will yield comparable results to those obtained from RIS Live
• whether announcing a limited number of new prefixes, originated from a new AS not announcing other prefixes, will still result in BGP zombies

Our results reveal that BGP zombies are a pervasive problem in the Internet routing system, regardless of the monitoring platform and prefix announcement characteristics utilized. We advocate that monitoring platforms should develop mechanisms for accurately identifying and labeling BGP routes as zombies, as well as implementing strategies for promptly alerting users to their presence in order to mitigate the potential negative effects they may have on network stability and performance.

Lefteris Manassakis: Network engineer who has shifted his focus on networking research, while recently became a founder/entrepreneur. Co-founder and Chief Operating Officer at Code BGP (https://www.codebgp.com/). Prior to founding Code BGP, Lefteris has worked at the Foundation for Research and Technology - Hellas (FORTH) as a research engineer, and a member of the INSPIRE research group. For more info, please check his personal web page: https://manassakis.net/

Speaker Lefteris Manassakis - Code BGP