University of Twente Student Theses

Login

Characterizing anycast convergence time for AS path prepends

Saado, E. (2025) Characterizing anycast convergence time for AS path prepends.

[img] PDF
1MB
Abstract:On the internet, IP addresses are used for identification of machines like servers and routers. These IP addresses are typically announced at a single physical Point of Presence (PoP). However, these announcements can be made at multiple PoPs, causing traffic to route to the closest PoP. This practice is called anycasting. Anycast is often utilised by Domain Name System (DNS) servers or Content Delivery Networks (CDNs), since it allows for load balancing a service, higher availability, and lower latency for users of the service. Each PoP will receive a certain slice of traffic depending on its proximity, roughly its path length, to other networks. This slice of traffic is called its ’catchment’. Traffic can be steered to different PoPs using "path prepending". That is a practice in which a PoP announces its IP addresses with an artificially elongated path, causing the PoP to be less preferable to other networks, since its path is longer, this can be used to reduce load to that specific PoP, for example, in the case of a (D)DoS attack. In this paper, we will analyze how long it takes for a path prepend update to reach all other networks (e.g. for the prepend to converge) across the internet. It is useful to know how fast an update converges, for example in the context of (D)DoS attacks, to know how fast a measure can be deployed and how fast after deploying it will work.
Item Type:Essay (Bachelor)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:54 computer science
Programme:Computer Science BSc (56964)
Link to this item:https://purl.utwente.nl/essays/105048
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page