BGP Dissemination of Network Virtualization Overlays (NVO3) Flow Specification Rules
draft-ietf-idr-flowspec-nvo3-04
INTERNET-DRAFT D. Eastlake
Intended Status: Proposed Standard W. Hao
S. Zhuang
Z. Li
Huawei Technologies
R. Gu
China Mobil
Expires: September 3, 2019 March 4, 2019
BGP Dissemination of
Network Virtualization Overlays (NVO3) Flow Specification Rules
<draft-ietf-idr-flowspec-nvo3-04.txt>
Abstract
This draft specifies a new subset of component types to support the
(Network Virtualization Overlays (NVO3)) flow-spec application.
Status of This Document
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provisions of BCP 78 and BCP 79.
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Table of Contents
1. Introduction............................................3
1.1 Terminology............................................5
2. NVO3 Flow Specification Encoding........................6
3. NVO3 Flow Specification Traffic Actions.................8
4. Security Considerations.................................8
5. IANA Considerations.....................................8
Normative References.......................................9
Informative References.....................................9
Acknowledgments...........................................10
Authors' Addresses........................................10
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1. Introduction
BGP Flow-spec is an extension to BGP that supports the dissemination
of traffic flow specification rules. It uses the BGP Control Plane
to simplify the distribution of Access Control Lists (ACLs) and
allows new filter rules to be injected to all BGP peers
simultaneously without changing router configuration. A typical
application of BGP Flow-spec is to automate the distribution of
traffic filter lists to routers for Distributed Denial of Service
(DDOS) mitigation.
[RFC5575] defines a new BGP Network Layer Reachability Information
(NLRI) format used to distribute traffic flow specification rules.
NLRI (AFI=1, SAFI=133) is for IPv4 unicast filtering. NLRI (AFI=1,
SAFI=134) is for BGP/MPLS VPN filtering. [IPv6-FlowSpec] and [Layer2-
FlowSpec] extend the flow-spec rules for IPv6 and layer 2 Ethernet
packets respectively. All these previous flow specifications match
only single layer IP/Ethernet information fields like
source/destination MAC, source/destination IP prefix, protocol type,
ports, and the like.
In the cloud computing era, multi-tenancy has become a core
requirement for data centers. Since Network Virtualization Overlays
(NVO3) can satisfy multi-tenancy key requirements, this technology is
being deployed in an increasing number of cloud data center networks.
NVO3 is an overlay technology and VXLAN [RFC7348] and NVGRE [RFC7367]
are two typical NVO3 encapsulations. GENEVE [GENEVE], GUE [GUE] and
GPE [GPE] are three emerging NVO3 encapsulations. Because it is an
overlay technology involving an additional level of encapsulation,
flow specification matching on the inner header as well as the outer
header, as specified below, is needed.
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