Using RFC4893 Violations to Reveal the Topology of AS Confederations

Author

Gutierrez, P.A.A.

Author_Institution

Univ. of Paderborn, Paderborn, Germany

fYear

2010

fDate

7-13 March 2010

Firstpage

86

Lastpage

90

Abstract

RFC4893 defines the transition mechanisms to use 4 byte Autonomous System numbers. This RFC has some inconsistencies and has not been implemented correctly by all vendors. As a result, several major Internet incidents related with the handling of bogus 4 byte Autonomous System Numbers (ASNs) have ocurred. The last one was registered between the 17^th and the 18^th August, 2009. This paper analyses BGP-4 traffic collected the RIPE´s route collector during this period. The analysis reveals frequent violations of RFC4893. The information extracted from these violations is used to get some insight into the internal topology of the AS Confederation AS13237 and an alternative handling of AS Confederation information in the AS4_PATH attribute is proposed.

Keywords

Internet; information retrieval; network topology; routing protocols; transport protocols; 4 byte autonomous system numbers; AS Confederation AS13237 topology; AS4_PATH attribute; BGP-4 traffic; Internet; RFC4893 violations; RIPE route collector; information extraction; Data mining; Failure analysis; IP networks; Information analysis; Monitoring; Network topology; Protocols; Risk analysis; Routing; Web and internet services; Network Operations; Network monitoring; Routing protocols;

fLanguage

English

Publisher

ieee

Conference_Titel

Networking and Services (ICNS), 2010 Sixth International Conference on

Conference_Location

Cancun

Print_ISBN

978-1-4244-5927-8

Type

conf

DOI

10.1109/ICNS.2010.21

Filename

5460665