Updates on EVPN BUM Procedures
draft-zzhang-bess-evpn-bum-procedure-updates-01
BESS Z. Zhang
Internet-Draft W. Lin
Updates: 7432 (if approved) Juniper Networks, Inc.
Intended status: Standards Track J. Rabadan
Expires: June 20, 2016 Alcatel-Lucent
K. Patel
Cisco Systems
December 18, 2015
Updates on EVPN BUM Procedures
draft-zzhang-bess-evpn-bum-procedure-updates-01
Abstract
This document specifies procedure updates for broadcast, unknown
unicast, and multicast (BUM) traffic in Ethernet VPNs (EVPN),
including selective multicast, and provider tunnel segmentation.
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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://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 June 20, 2016.
Copyright Notice
Copyright (c) 2015 IETF Trust and the persons identified as the
document authors. All rights reserved.
Zhang, et al. Expires June 20, 2016 [Page 1]
Internet-Draft evpn-bum-procedure-update December 2015
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Table of Contents
1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Reasons for Tunnel Segmentation . . . . . . . . . . . . . 4
3. Additional Route Types of EVPN NLRI . . . . . . . . . . . . . 5
3.1. Per-Region I-PMSI A-D route . . . . . . . . . . . . . . . 6
3.2. S-PMSI A-D route . . . . . . . . . . . . . . . . . . . . 6
3.3. Leaf-AD route . . . . . . . . . . . . . . . . . . . . . . 6
4. Selective Multicast . . . . . . . . . . . . . . . . . . . . . 7
5. Inter-AS Segmentation . . . . . . . . . . . . . . . . . . . . 7
5.1. Changes to Section 7.2.2 of RFC 7117 . . . . . . . . . . 7
5.2. I-PMSI Leaf Tracking . . . . . . . . . . . . . . . . . . 8
5.3. Backward Compatibility . . . . . . . . . . . . . . . . . 9
6. Inter-Region Segmentation . . . . . . . . . . . . . . . . . . 10
6.1. Area vs. Region . . . . . . . . . . . . . . . . . . . . . 10
6.2. Per-region Aggregation . . . . . . . . . . . . . . . . . 12
6.3. Use of S-NH-EC . . . . . . . . . . . . . . . . . . . . . 13
6.4. Ingress PE's I-PMSI Leaf Tracking . . . . . . . . . . . . 13
7. Intra-region Segmentation and Assisted Ingress Replication . 13
7.1. Reducing Leaf A-D Routes . . . . . . . . . . . . . . . . 14
7.2. Mix of inter-region and intra-region segmentation . . . . 15
8. Multi-homing Support . . . . . . . . . . . . . . . . . . . . 15
9. EVPN DCI . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9.1. Non-GW Option . . . . . . . . . . . . . . . . . . . . . . 16
9.2. GW option . . . . . . . . . . . . . . . . . . . . . . . . 17
10. Security Considerations . . . . . . . . . . . . . . . . . . . 18
11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 18
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
12.1. Normative References . . . . . . . . . . . . . . . . . . 18
12.2. Informative References . . . . . . . . . . . . . . . . . 19
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 19
1. Terminology
To be added
Zhang, et al. Expires June 20, 2016 [Page 2]
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