Applying BGP flowspec rules on a specific interface set
draft-ietf-idr-flowspec-interfaceset-04
Inter-Domain Routing S. Litkowski
Internet-Draft Orange
Intended status: Standards Track A. Simpson
Expires: December 30, 2018 Nokia
K. Patel
Arrcus, Inc
J. Haas
Juniper Networks
L. Yong
Huawei
June 28, 2018
Applying BGP flowspec rules on a specific interface set
draft-ietf-idr-flowspec-interfaceset-04
Abstract
The BGP Flow Specification (flowspec) Network Layer Reachability
Information (BGP NLRI) extension ([RFC5575]) is used to distribute
traffic flow specifications into BGP. The primary application of
this extension is the distribution of traffic filtering policies for
the mitigation of distributed denial of service (DDoS) attacks.
By default, flow specification filters are applied on all forwarding
interfaces that are enabled for use by the BGP flowspec extension. A
network operator may wish to apply a given filter selectively to a
subset of interfaces based on an internal classification scheme.
Examples of this include "all customer interfaces", "all peer
interfaces", "all transit interfaces", etc.
This document defines BGP Extended Communities ([RFC4360]) that
permit such filters to be selectively applied to sets of forwarding
interfaces sharing a common group identifier. The BGP Extended
Communities carrying this group identifier are referred to as the BGP
Flowspec "interface-set" Extended Communities.
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.
Litkowski, et al. Expires December 30, 2018 [Page 1]
Internet-Draft flowspec-interfaceset June 2018
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Table of Contents
1. Use case . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Interface specific filtering using BGP flowspec . . . . . . . 3
3. Interface-set extended community . . . . . . . . . . . . . . 4
4. Scaling of per-interface rules . . . . . . . . . . . . . . . 6
5. Deployment Considerations . . . . . . . . . . . . . . . . . . 6
5.1. Add-Paths . . . . . . . . . . . . . . . . . . . . . . . . 6
5.2. Inter-domain Considerations . . . . . . . . . . . . . . . 6
6. Security Considerations . . . . . . . . . . . . . . . . . . . 7
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 7
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
8.1. FlowSpec Transitive Extended Communities . . . . . . . . 7
8.2. FlowSpec Non-Transitive Extended Communities . . . . . . 7
8.3. FlowSpec interface-set Extended Community . . . . . . . . 8
8.4. Allocation Advice to IANA . . . . . . . . . . . . . . . . 8
9. Normative References . . . . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
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