Impact of BGP Filtering on Inter-Domain Routing Policies (RFC7789)
Original Publication Date: 2016-Apr-01
Included in the Prior Art Database: 2016-Apr-07
Internet Society Requests For Comment (RFCs)
C. Cardona: AUTHOR [+3]
It is common practice for network operators to propagate a more- specific prefix in the BGP routing system along with the less- specific prefix that they originate. It is also possible for some Autonomous Systems (ASes) to apply different policies to the more specific and the less-specific prefix.
Internet Engineering Task Force (IETF) C. Cardona Request for Comments: 7789 IMDEA Networks/UC3M Category: Informational P. Francois ISSN: 2070-1721 P. Lucente Cisco Systems April 2016
Impact of BGP Filtering on Inter-Domain Routing Policies
This document describes how unexpected traffic flows can emerge across an autonomous system as the result of other autonomous systems filtering or restricting the propagation of more-specific prefixes. We provide a review of the techniques to detect the occurrence of this issue and defend against it.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for informational purposes.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7789.
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al. Informational [Page 1]
RFC 7789 Impact of BGP Filtering April 2016
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. Unexpected Traffic Flows . . . . . . . . . . ....