Applying BGP flowspec rules on a specific interface set
draft-ietf-idr-flowspec-interfaceset-03

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Last updated 2017-03-11
Replaces draft-litkowski-idr-flowspec-interfaceset
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Routing Area Working Group                                  S. Litkowski
Internet-Draft                                                    Orange
Intended status: Standards Track                              A. Simpson
Expires: September 12, 2017                                        Nokia
                                                                K. Patel
                                                             Arrcus, Inc
                                                                 J. Haas
                                                        Juniper Networks
                                                                 L. Yong
                                                                  Huawei
                                                          March 11, 2017

        Applying BGP flowspec rules on a specific interface set
                draft-ietf-idr-flowspec-interfaceset-03

Abstract

   BGP flowspec is an extension to BGP that allows for the dissemination
   of traffic flow specification rules.  The primary application of this
   extension is DDoS mitigation where the flowspec rules are applied in
   most cases to all peering routers of the network.

   This document will present another use case of BGP flowspec where
   flow specifications are used to maintain some access control lists at
   network boundary.  BGP flowspec is a very efficient distributing
   machinery that can help in saving OPEX while deploying/updating ACLs.
   This new application requires flow specification rules to be applied
   only on a specific subset of interfaces and in a specific direction.

   The current specification of BGP flowspec ([RFC5575]) introduces the
   notion of flow specification (which describes the matching criterion)
   and traffic filtering actions.  The flow specification is encoded as
   part of the NLRI while the traffic filtering actions are encoded as
   extended communities.  The combination of a flow specification and
   one or more actions is known as a flow specification rule.  [RFC5575]
   does not detail where the flow specification rules need to be
   applied.

   Besides the flow specification and traffic filtering actions, this
   document introduces the notion of traffic filtering scope in order to
   drive where a particular rule must be applied.  In particular, this
   document introduces the "interface-set" traffic filtering scope that
   could be used in parallel of traffic filtering actions (marking,
   rate-limiting ...).  The purpose of this extension is to inform
   remote routers about groups of interfaces where the rule must be
   applied.

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   This extension can also be used in a DDoS mitigation context where a
   provider wants to apply the filtering only on specific peers.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on September 12, 2017.

Copyright Notice

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