Label Switched Path (LSP) Ping and Traceroute Multipath Support for Link Aggregation Group (LAG) Interfaces
RFC 8611
Document | Type |
RFC - Proposed Standard
(June 2019; No errata)
Updates RFC 8029
|
|
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Authors | Nobo Akiya , George Swallow , Stephane Litkowski , Bruno Decraene , John Drake , Mach Chen | ||
Last updated | 2019-06-19 | ||
Replaces | draft-akiya-mpls-lsp-ping-lag-multipath | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Loa Andersson | ||
Shepherd write-up | Show (last changed 2018-08-03) | ||
IESG | IESG state | RFC 8611 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) N. Akiya Request for Comments: 8611 Big Switch Networks Updates: 8029 G. Swallow Category: Standards Track SETC ISSN: 2070-1721 S. Litkowski B. Decraene Orange J. Drake Juniper Networks M. Chen Huawei June 2019 Label Switched Path (LSP) Ping and Traceroute Multipath Support for Link Aggregation Group (LAG) Interfaces Abstract This document defines extensions to the MPLS Label Switched Path (LSP) Ping and Traceroute mechanisms as specified in RFC 8029. The extensions allow the MPLS LSP Ping and Traceroute mechanisms to discover and exercise specific paths of Layer 2 (L2) Equal-Cost Multipath (ECMP) over Link Aggregation Group (LAG) interfaces. Additionally, a mechanism is defined to enable the determination of the capabilities supported by a Label Switching Router (LSR). This document updates RFC 8029. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8611. Akiya, et al. Standards Track [Page 1] RFC 8611 LSP Ping for LAG June 2019 Copyright Notice Copyright (c) 2019 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 Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1. Background . . . . . . . . . . . . . . . . . . . . . . . 3 1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4 1.3. Requirements Language . . . . . . . . . . . . . . . . . . 4 2. Overview of Solution . . . . . . . . . . . . . . . . . . . . 4 3. LSR Capability Discovery . . . . . . . . . . . . . . . . . . 6 3.1. Initiator LSR Procedures . . . . . . . . . . . . . . . . 7 3.2. Responder LSR Procedures . . . . . . . . . . . . . . . . 7 4. Mechanism to Discover L2 ECMP . . . . . . . . . . . . . . . . 7 4.1. Initiator LSR Procedures . . . . . . . . . . . . . . . . 7 4.2. Responder LSR Procedures . . . . . . . . . . . . . . . . 8 4.3. Additional Initiator LSR Procedures . . . . . . . . . . . 10 5. Mechanism to Validate L2 ECMP Traversal . . . . . . . . . . . 11 5.1. Incoming LAG Member Links Verification . . . . . . . . . 11 5.1.1. Initiator LSR Procedures . . . . . . . . . . . . . . 11 5.1.2. Responder LSR Procedures . . . . . . . . . . . . . . 12 5.1.3. Additional Initiator LSR Procedures . . . . . . . . . 12 5.2. Individual End-to-End Path Verification . . . . . . . . . 14 6. LSR Capability TLV . . . . . . . . . . . . . . . . . . . . . 14 7. LAG Description Indicator Flag: G . . . . . . . . . . . . . . 15 8. Local Interface Index Sub-TLV . . . . . . . . . . . . . . . . 16 9. Remote Interface Index Sub-TLV . . . . . . . . . . . . . . . 17 10. Detailed Interface and Label Stack TLV . . . . . . . . . . . 17 10.1. Sub-TLVs . . . . . . . . . . . . . . . . . . . . . . . . 19 10.1.1. Incoming Label Stack Sub-TLV . . . . . . . . . . . . 19 10.1.2. Incoming Interface Index Sub-TLV . . . . . . . . . . 20 11. Rate-Limiting on Echo Request/Reply Messages . . . . . . . . 21 12. Security Considerations . . . . . . . . . . . . . . . . . . . 21Show full document text