AC-Aware Bundling Service Interface in EVPN
draft-sajassi-bess-evpn-ac-aware-bundling-00
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2018-10-22
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BESS WorkGroup Ali. Sajassi
Internet-Draft Mankamana. Mishra
Intended status: Standards Track Samir. Thoria
Expires: April 25, 2019 Patrice. Brissette
Cisco Systems
October 22, 2018
AC-Aware Bundling Service Interface in EVPN
draft-sajassi-bess-evpn-ac-aware-bundling-00
Abstract
EVPN provides an extensible and flexible multi-homing VPN solution
over an MPLS/IP network for intra-subnet connectivity among Tenant
Systems and End Devices that can be physical or virtual.
EVPN multihoming with IRB is one of the common deployment scenarios.
There are deployments which requires capability to have multiple
subnets designated with multiple VLAN IDs in single bridge domain.
RFC7432 defines three different type of service interface which serve
different requirements but none of them address the requirement to be
able to support multiple subnets within single bridge domain. In
this draft we define new service interface type to support multiple
subnets in single bridge domain.
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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on April 25, 2019.
Sajassi, et al. Expires April 25, 2019 [Page 1]
Internet-Draft AC-Aware Bundling Service Interface in EVPN October 2018
Copyright Notice
Copyright (c) 2018 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Problem with Unicast MAC route processing for multihome
case . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2. Problem with Multicast route synchronization . . . . . . 6
1.3. Potential Security concern caused by misconfiguration . . 6
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. Requirements . . . . . . . . . . . . . . . . . . . . . . . . 8
4. Solution Description . . . . . . . . . . . . . . . . . . . . 9
4.1. Control Plane Operation . . . . . . . . . . . . . . . . . 11
4.1.1. MAC/IP Address Advertisement . . . . . . . . . . . . 11
4.1.1.1. Local Unicast MAC learning . . . . . . . . . . . 11
4.1.1.2. Remote Unicast MAC learning . . . . . . . . . . . 11
4.1.2. Multicast route Advertisement . . . . . . . . . . . . 11
4.1.2.1. Local multicast state . . . . . . . . . . . . . . 11
4.1.2.2. Remote multicast state . . . . . . . . . . . . . 12
4.2. Data Plane Operation . . . . . . . . . . . . . . . . . . 12
4.2.1. Unicast Forwarding . . . . . . . . . . . . . . . . . 12
4.2.2. Multicast Forwarding . . . . . . . . . . . . . . . . 13
5. BGP Encoding . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1. Attachment Circuit ID Extended Community . . . . . . . . 13
6. Security Considerations . . . . . . . . . . . . . . . . . . . 14
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
8. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 14
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 14
9.1. Normative References . . . . . . . . . . . . . . . . . . 14
9.2. Informative References . . . . . . . . . . . . . . . . . 14
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 15
Sajassi, et al. Expires April 25, 2019 [Page 2]
Internet-Draft AC-Aware Bundling Service Interface in EVPN October 2018
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