This page provides relevant terms for definition.


Autonomous System (AS)

A collection of connected Internet Protocol (IP) routers under the control of one or more network operators on behalf of a single administrative entity or domain.


Autonomous System Number (ASN)

A unique 32-bit identifying number assigned by IANA through the Regional Internet Registries (RIR).


Border Gateway Protocol (BGP)

BGP is a protocol that manages how packets are routed across the internet through the exchange of routing and reachability information between ASes.






One of three relations an AS can have with respect to another AS. An AS must buy transit services for any traffic destined to parts of the Internet that this AS neither owns nor can reach through its own customers.


Local Preference

Local Preference refers to the local policy implemented at a specific AS that determines its’ actions within the BGP network.


Routing Information Base Input (RIBs-In)

BGP RIB-In stores BGP routing information received from different neighbors. The stored information is used as an input to BGP decision process.


Local Routing Information Base (Local RIB)

The local routing information base stores the resulted information from processing the RIBs-In database’s information. These are the routes that are used locally after applying BGP policies and decision process.


MRT Parser

The MRT parser gathers BGP MRT data through BGPScanner.



BPG speaking AS that has an established direct relationship with another BGP speaking AS.



One of three relations an AS can have with respect to another AS. Peers agree to share traffic at no cost because it is mutually beneficial to do so.



One of three relations an AS can have with respect to another AS. Providers allow transit service for their customers, propagating all announcements the provider receives to its’ customers but only announcements from its’ customers to its’ own providers and peers.


Relationships Parser

The relationship parser gathers current AS relationship data to generate the AS topology.


Route Origin Authorization (ROA)



ROAs Parser

The ROAs parser gathers valid ROA data to determine the MRT announcement covered by valid ROAs.


Route Origin Validation (ROV)



ROV Forecast

The ROV Forecast, using the What-If analysis, provides a forecast of the application of ROV policies on a particular Autonomous System.


Resource Private Key Infrastructure (RPKI)



RPKI Validator

The RPKI Validator allows operators to download and validate the global RPKI data set.


Valley Free Routing

A network without traffic flow valleys for any source-destination pair has valley-free routing.


What-If Analysis

The What-If analysis determines the effect that security policies would have on each AS based on the MRT RIB snapshots.