LSP-Ping Mechanisms for EVPN and PBB-EVPN
draft-ietf-bess-evpn-lsp-ping-02
BESS Workgroup P. Jain, Ed.
Internet-Draft S. Salam
Intended status: Standards Track A. Sajassi
Expires: January 3, 2021 Cisco Systems, Inc.
S. Boutros
Ciena
G. Mirsky
ZTE Corporation.
July 2, 2020
LSP-Ping Mechanisms for EVPN and PBB-EVPN
draft-ietf-bess-evpn-lsp-ping-02
Abstract
LSP-Ping is a widely deployed Operation, Administration, and
Maintenance (OAM) mechanism in MPLS networks. This document
describes mechanisms for detecting data-plane failures using LSP Ping
in MPLS based EVPN and PBB-EVPN networks.
Status of This Memo
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This Internet-Draft will expire on January 3, 2021.
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Internet-Draft MPLS OAM for EVPN July 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Specification of Requirements . . . . . . . . . . . . . . . . 3
3. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. Proposed Target FEC Stack Sub-TLVs . . . . . . . . . . . . . 3
4.1. EVPN MAC Sub-TLV . . . . . . . . . . . . . . . . . . . . 4
4.2. EVPN Inclusive Multicast Sub-TLV . . . . . . . . . . . . 4
4.3. EVPN Auto-Discovery Sub-TLV . . . . . . . . . . . . . . . 5
4.4. EVPN IP Prefix Sub-TLV . . . . . . . . . . . . . . . . . 6
5. Encapsulation of OAM Ping Packets . . . . . . . . . . . . . . 7
6. Operations . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.1. Unicast Data-plane connectivity checks . . . . . . . . . 7
6.2. Inclusive Multicast Data-plane Connectivity Checks . . . 8
6.2.1. Ingress Replication . . . . . . . . . . . . . . . . . 9
6.2.2. Using P2MP P-tree . . . . . . . . . . . . . . . . . . 10
6.2.3. Controlling Echo Responses when using P2MP P-tree . . 11
6.3. EVPN Aliasing Data-plane connectivity check . . . . . . . 11
6.4. EVPN IP Prefix (RT-5) Data-plane connectivity check . . . 11
7. Security Considerations . . . . . . . . . . . . . . . . . . . 12
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
8.1. Sub-TLV Type . . . . . . . . . . . . . . . . . . . . . . 12
8.2. Proposed new Return Codes . . . . . . . . . . . . . . . . 12
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 12
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 13
10.1. Normative References . . . . . . . . . . . . . . . . . . 13
10.2. Informative References . . . . . . . . . . . . . . . . . 13
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 14
1. Introduction
[RFC7432] describes MPLS based Ethernet VPN (EVPN) technology. An
EVPN comprises CE(s) connected to PE(s). The PEs provide layer 2
EVPN among the CE(s) over the MPLS core infrastructure. In EVPN
networks, PEs advertise the MAC addresses learned from the locally
connected CE(s), along with MPLS Label, to remote PE(s) in the
control plane using multi-protocol BGP. EVPN enables multi-homing of
CE(s) connected to multiple PEs and load balancing of traffic to and
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