| draft-akiya-mpls-entropy-lsp-ping-02.txt | draft-akiya-mpls-entropy-lsp-ping-03.txt | |||
|---|---|---|---|---|
| Internet Engineering Task Force N. Akiya | Internet Engineering Task Force N. Akiya | |||
| Internet-Draft G. Swallow | Internet-Draft G. Swallow | |||
| Updates: 4379,6424,6790 (if approved) C. Pignataro | Updates: 4379,6424,6790 (if approved) C. Pignataro | |||
| Intended status: Standards Track Cisco Systems | Intended status: Standards Track Cisco Systems | |||
| Expires: January 5, 2015 A. Malis | Expires: April 25, 2015 A. Malis | |||
| S. Aldrin | S. Aldrin | |||
| Huawei Technologies | Huawei Technologies | |||
| July 4, 2014 | October 22, 2014 | |||
| Label Switched Path (LSP) and Pseudowire (PW) Ping/Trace over | Label Switched Path (LSP) and Pseudowire (PW) Ping/Trace over | |||
| MPLS Network using Entropy Labels (EL) | MPLS Network using Entropy Labels (EL) | |||
| draft-akiya-mpls-entropy-lsp-ping-02 | draft-akiya-mpls-entropy-lsp-ping-03 | |||
| Abstract | Abstract | |||
| The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) | The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) | |||
| Ping and Traceroute are used to exercise specific paths of Equal-Cost | Ping and Traceroute are used to exercise specific paths of Equal-Cost | |||
| Multipath (ECMP). When LSP is signaled to use Entropy Label (EL) | Multipath (ECMP). When LSP is signaled to use Entropy Label (EL) | |||
| described in RFC6790, the ability for LSP Ping and Traceroute | described in RFC6790, the ability for LSP Ping and Traceroute | |||
| operation to discover and exercise ECMP paths has been lost in | operation to discover and exercise ECMP paths has been lost in | |||
| scenarios which LSRs apply deviating load balance techniques. One | scenarios which LSRs apply deviating load balance techniques. One | |||
| such scenario is when some LSRs apply EL based load balancing while | such scenario is when some LSRs apply EL based load balancing while | |||
| skipping to change at page 2, line 10 | skipping to change at page 2, line 10 | |||
| Internet-Drafts are working documents of the Internet Engineering | Internet-Drafts are working documents of the Internet Engineering | |||
| Task Force (IETF). Note that other groups may also distribute | Task Force (IETF). Note that other groups may also distribute | |||
| working documents as Internet-Drafts. The list of current Internet- | working documents as Internet-Drafts. The list of current Internet- | |||
| Drafts is at http://datatracker.ietf.org/drafts/current/. | Drafts is at http://datatracker.ietf.org/drafts/current/. | |||
| Internet-Drafts are draft documents valid for a maximum of six months | Internet-Drafts are draft documents valid for a maximum of six months | |||
| and may be updated, replaced, or obsoleted by other documents at any | and may be updated, replaced, or obsoleted by other documents at any | |||
| time. It is inappropriate to use Internet-Drafts as reference | time. It is inappropriate to use Internet-Drafts as reference | |||
| material or to cite them other than as "work in progress." | material or to cite them other than as "work in progress." | |||
| This Internet-Draft will expire on January 5, 2015. | This Internet-Draft will expire on April 25, 2015. | |||
| Copyright Notice | Copyright Notice | |||
| Copyright (c) 2014 IETF Trust and the persons identified as the | Copyright (c) 2014 IETF Trust and the persons identified as the | |||
| document authors. All rights reserved. | document authors. All rights reserved. | |||
| This document is subject to BCP 78 and the IETF Trust's Legal | This document is subject to BCP 78 and the IETF Trust's Legal | |||
| Provisions Relating to IETF Documents | Provisions Relating to IETF Documents | |||
| (http://trustee.ietf.org/license-info) in effect on the date of | (http://trustee.ietf.org/license-info) in effect on the date of | |||
| publication of this document. Please review these documents | publication of this document. Please review these documents | |||
| skipping to change at page 2, line 49 | skipping to change at page 2, line 49 | |||
| 6.2. IP Based Load Balancer & Pushes ELI/EL . . . . . . . . . 10 | 6.2. IP Based Load Balancer & Pushes ELI/EL . . . . . . . . . 10 | |||
| 6.3. Label Based Load Balancer & Not Pushing ELI/EL . . . . . 11 | 6.3. Label Based Load Balancer & Not Pushing ELI/EL . . . . . 11 | |||
| 6.4. Label Based Load Balancer & Pushes ELI/EL . . . . . . . . 11 | 6.4. Label Based Load Balancer & Pushes ELI/EL . . . . . . . . 11 | |||
| 6.5. Flow Aware MS-PW Stitching LSR . . . . . . . . . . . . . 12 | 6.5. Flow Aware MS-PW Stitching LSR . . . . . . . . . . . . . 12 | |||
| 7. Entropy Label FEC . . . . . . . . . . . . . . . . . . . . . . 12 | 7. Entropy Label FEC . . . . . . . . . . . . . . . . . . . . . . 12 | |||
| 8. DS Flags: L and E . . . . . . . . . . . . . . . . . . . . . . 13 | 8. DS Flags: L and E . . . . . . . . . . . . . . . . . . . . . . 13 | |||
| 9. New Multipath Information Type: 10 . . . . . . . . . . . . . 14 | 9. New Multipath Information Type: 10 . . . . . . . . . . . . . 14 | |||
| 10. Supported and Unsupported Cases . . . . . . . . . . . . . . . 16 | 10. Supported and Unsupported Cases . . . . . . . . . . . . . . . 16 | |||
| 11. Security Considerations . . . . . . . . . . . . . . . . . . . 18 | 11. Security Considerations . . . . . . . . . . . . . . . . . . . 18 | |||
| 12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18 | 12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18 | |||
| 12.1. New Sub-Registries . . . . . . . . . . . . . . . . . . . 18 | 12.1. DS Flags . . . . . . . . . . . . . . . . . . . . . . . . 18 | |||
| 12.1.1. DS Flags . . . . . . . . . . . . . . . . . . . . . . 18 | 12.2. Multpath Type . . . . . . . . . . . . . . . . . . . . . 18 | |||
| 12.1.2. Multipath Type . . . . . . . . . . . . . . . . . . . 19 | 12.3. Entropy Label FEC . . . . . . . . . . . . . . . . . . . 19 | |||
| 12.2. Entropy Label FEC . . . . . . . . . . . . . . . . . . . 19 | 13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 19 | |||
| 14. Contributing Authors . . . . . . . . . . . . . . . . . . . . 19 | ||||
| 13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 20 | 15. References . . . . . . . . . . . . . . . . . . . . . . . . . 19 | |||
| 14. Contributing Authors . . . . . . . . . . . . . . . . . . . . 20 | 15.1. Normative References . . . . . . . . . . . . . . . . . . 19 | |||
| 15. References . . . . . . . . . . . . . . . . . . . . . . . . . 20 | ||||
| 15.1. Normative References . . . . . . . . . . . . . . . . . . 20 | ||||
| 15.2. Informative References . . . . . . . . . . . . . . . . . 20 | 15.2. Informative References . . . . . . . . . . . . . . . . . 20 | |||
| Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 21 | Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 20 | |||
| 1. Introduction | 1. Introduction | |||
| 1.1. Terminology | 1.1. Terminology | |||
| The following acronyms/terminologies are used in this document: | The following acronyms/terminologies are used in this document: | |||
| o MPLS - Multiprotocol Label Switching. | o MPLS - Multiprotocol Label Switching. | |||
| o LSP - Label Switched Path. | o LSP - Label Switched Path. | |||
| skipping to change at page 18, line 30 | skipping to change at page 18, line 30 | |||
| Responder node that pushes ELI/EL will need to compute and return | Responder node that pushes ELI/EL will need to compute and return | |||
| multipath data including associated EL. Initiator node will need to | multipath data including associated EL. Initiator node will need to | |||
| store and handle both IP multipath and label multipath information, | store and handle both IP multipath and label multipath information, | |||
| and include destination IP addresses and/or ELs in MPLS echo request | and include destination IP addresses and/or ELs in MPLS echo request | |||
| packet as well as in carried multipath information to downstream | packet as well as in carried multipath information to downstream | |||
| nodes. Due to additional processing, it is critical that proper | nodes. Due to additional processing, it is critical that proper | |||
| security measures described in [RFC4379] and [RFC6424] are followed. | security measures described in [RFC4379] and [RFC6424] are followed. | |||
| 12. IANA Considerations | 12. IANA Considerations | |||
| 12.1. New Sub-Registries | 12.1. DS Flags | |||
| [RFC4379] defines the Downstream Mapping TLV, which has the Type 2 | The IANA is requested to assign new bit numbers from the "DS flags" | |||
| assigned from the "Multi-Protocol Label Switching (MPLS) Label | sub-registry from the "Multi-Protocol Label Switching (MPLS) Label | |||
| Switched Paths (LSPs) Ping Parameters - TLVs" registry. [RFC6424] | Switched Paths (LSPs) Ping Parameters - TLVs" registry | |||
| defines the Downstream Detailed Mapping TLV, which has the Type 20 | ([IANA-MPLS-LSP-PING]). | |||
| assigned from the "Multi-Protocol Label Switching (MPLS) Label | ||||
| Switched Paths (LSPs) Ping Parameters - TLVs" registry. Both TLVs | Note: the "DS flags" sub-registry is created by | |||
| shares two fields: "DS Flags" and "Multipath Type". This document | [I-D.decraene-mpls-lsp-ping-registry]. | |||
| requires allocation of new values in both the "DS Flags" and | ||||
| "Multipath Type" fields, which are not maintained by IANA today. | ||||
| Therefore, this document requests IANA to create new registries | ||||
| within [IANA-MPLS-LSP-PING] protocol to maintain "DS Flags" and | ||||
| "Multipath Type" fields. Name of registries and initial values are | ||||
| described in immediate sub-sections to follow. | ||||
| 12.1.1. DS Flags | ||||
| Bit number Name Reference | Bit number Name Reference | |||
| ---------- ---------------------------------------- --------- | ---------- ---------------------------------------- --------- | |||
| 7 N: Treat as a Non-IP Packet RFC4379 | TBD2(5) E: ELI/EL push indicator this document | |||
| 6 I: Interface and Label Stack Object Request RFC4379 | TBD3(4) L: Label based load balance indicator this document | |||
| 5 E: ELI/EL push indicator this document | ||||
| 4 L: Label based load balance indicator this document | ||||
| 3-0 Unassigned | ||||
| Assignments of DS Flags are via Standards Action [RFC5226] or IESG | This document requests the bit number 5 as TBD2, and the bit number 4 | |||
| Approval [RFC5226]. | as TBD3. | |||
| Note that "DS Flags" is a field included in two TLVs defined in | 12.2. Multpath Type | |||
| "Multi-Protocol Label Switching (MPLS) Label Switched Paths (LSPs) | ||||
| Ping Parameters - TLVs" registry: Downstream Mapping TLV (value 2) | ||||
| and Downstream Detailed Mapping TLV (value 20). Modification to "DS | ||||
| Flags" registry will affect both TLVs. | ||||
| 12.1.2. Multipath Type | The IANA is requested to assign a new value from the "Multipath Type" | |||
| sub-registry from the "Multi-Protocol Label Switching (MPLS) Label | ||||
| Switched Paths (LSPs) Ping Parameters - TLVs" registry | ||||
| ([IANA-MPLS-LSP-PING]). | ||||
| Note: the "Multipath Type" sub-registry is created by | ||||
| [I-D.decraene-mpls-lsp-ping-registry]. | ||||
| Value Meaning Reference | Value Meaning Reference | |||
| ---------- ---------------------------------------- --------- | ---------- ---------------------------------------- --------- | |||
| 0 no multipath RFC4379 | TBD4(10) IP and label set this document | |||
| 1 Unassigned | ||||
| 2 IP address RFC4379 | ||||
| 3 Unassigned | ||||
| 4 IP address range RFC4379 | ||||
| 5-7 Unassigned | ||||
| 8 Bit-masked IP address set RFC4379 | ||||
| 9 Bit-masked label set RFC4379 | ||||
| 10 IP and label set this document | ||||
| 11-255 Unassigned | ||||
| Assignments of Multipath Type are via IETF Review [RFC5226] or IESG | ||||
| Approval [RFC5226]. | ||||
| Note that "Multipath Type" is a field included in two TLVs defined in | This document requests the value 10 as TBD4. | |||
| "Multi-Protocol Label Switching (MPLS) Label Switched Paths (LSPs) | ||||
| Ping Parameters - TLVs" registry: Downstream Mapping TLV (value 2) | ||||
| and Downstream Detailed Mapping TLV (value 20). Modification to | ||||
| "Multipath Type" registry will affect both TLVs. | ||||
| 12.2. Entropy Label FEC | 12.3. Entropy Label FEC | |||
| IANA is requested to assign a new sub-TLV from the "Sub-TLVs for TLV | The IANA is requested to assign a new sub-TLV from the "Sub-TLVs for | |||
| Types 1 and 16" section from "Multi-Protocol Label Switching (MPLS) | TLV Types 1 and 16" section from the "Multi-Protocol Label Switching | |||
| Label Switched Paths (LSPs) Ping Parameters - TLVs" registry. | (MPLS) Label Switched Paths (LSPs) Ping Parameters - TLVs" registry | |||
| ([IANA-MPLS-LSP-PING]). | ||||
| Sub-Type Sub-TLV Name Reference | Sub-Type Sub-TLV Name Reference | |||
| -------- ------------ --------- | -------- ------------ --------- | |||
| TBD1 Entropy Label FEC this document | TBD1 Entropy Label FEC this document | |||
| 13. Acknowledgements | 13. Acknowledgements | |||
| Authors would like to thank Loa Andersson, Curtis Villamizar, Daniel | Authors would like to thank Loa Andersson, Curtis Villamizar, Daniel | |||
| King and Sriganesh Kini for performing thorough review and providing | King and Sriganesh Kini for performing thorough review and providing | |||
| valuable comments. | valuable comments. | |||
| skipping to change at page 20, line 38 | skipping to change at page 20, line 11 | |||
| [RFC4379] Kompella, K. and G. Swallow, "Detecting Multi-Protocol | [RFC4379] Kompella, K. and G. Swallow, "Detecting Multi-Protocol | |||
| Label Switched (MPLS) Data Plane Failures", RFC 4379, | Label Switched (MPLS) Data Plane Failures", RFC 4379, | |||
| February 2006. | February 2006. | |||
| [RFC6790] Kompella, K., Drake, J., Amante, S., Henderickx, W., and | [RFC6790] Kompella, K., Drake, J., Amante, S., Henderickx, W., and | |||
| L. Yong, "The Use of Entropy Labels in MPLS Forwarding", | L. Yong, "The Use of Entropy Labels in MPLS Forwarding", | |||
| RFC 6790, November 2012. | RFC 6790, November 2012. | |||
| 15.2. Informative References | 15.2. Informative References | |||
| [I-D.decraene-mpls-lsp-ping-registry] | ||||
| Decraene, B., Akiya, N., Pignataro, C., Andersson, L., and | ||||
| S. Aldrin, "IANA registries for LSP ping Code Points", | ||||
| draft-decraene-mpls-lsp-ping-registry-00 (work in | ||||
| progress), October 2014. | ||||
| [I-D.ietf-mpls-forwarding] | [I-D.ietf-mpls-forwarding] | |||
| Villamizar, C., Kompella, K., Amante, S., Malis, A., and | Villamizar, C., Kompella, K., Amante, S., Malis, A., and | |||
| C. Pignataro, "MPLS Forwarding Compliance and Performance | C. Pignataro, "MPLS Forwarding Compliance and Performance | |||
| Requirements", draft-ietf-mpls-forwarding-09 (work in | Requirements", draft-ietf-mpls-forwarding-09 (work in | |||
| progress), March 2014. | progress), March 2014. | |||
| [I-D.ravisingh-mpls-el-for-seamless-mpls] | [I-D.ravisingh-mpls-el-for-seamless-mpls] | |||
| Singh, R., Shen, Y., and J. Drake, "Entropy label for | Singh, R., Shen, Y., and J. Drake, "Entropy label for | |||
| seamless MPLS", draft-ravisingh-mpls-el-for-seamless- | seamless MPLS", draft-ravisingh-mpls-el-for-seamless- | |||
| mpls-01 (work in progress), October 2013. | mpls-02 (work in progress), July 2014. | |||
| [IANA-MPLS-LSP-PING] | [IANA-MPLS-LSP-PING] | |||
| IANA, "Multi-Protocol Label Switching (MPLS) Label | IANA, "Multi-Protocol Label Switching (MPLS) Label | |||
| Switched Paths (LSPs) Ping Parameters", | Switched Paths (LSPs) Ping Parameters", | |||
| <http://www.iana.org/assignments/mpls-lsp-ping-parameters/ | <http://www.iana.org/assignments/mpls-lsp-ping-parameters/ | |||
| mpls-lsp-ping-parameters.xhtml>. | mpls-lsp-ping-parameters.xhtml>. | |||
| [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an | ||||
| IANA Considerations Section in RFCs", BCP 26, RFC 5226, | ||||
| May 2008. | ||||
| [RFC6391] Bryant, S., Filsfils, C., Drafz, U., Kompella, V., Regan, | [RFC6391] Bryant, S., Filsfils, C., Drafz, U., Kompella, V., Regan, | |||
| J., and S. Amante, "Flow-Aware Transport of Pseudowires | J., and S. Amante, "Flow-Aware Transport of Pseudowires | |||
| over an MPLS Packet Switched Network", RFC 6391, November | over an MPLS Packet Switched Network", RFC 6391, November | |||
| 2011. | 2011. | |||
| [RFC6424] Bahadur, N., Kompella, K., and G. Swallow, "Mechanism for | [RFC6424] Bahadur, N., Kompella, K., and G. Swallow, "Mechanism for | |||
| Performing Label Switched Path Ping (LSP Ping) over MPLS | Performing Label Switched Path Ping (LSP Ping) over MPLS | |||
| Tunnels", RFC 6424, November 2011. | Tunnels", RFC 6424, November 2011. | |||
| Authors' Addresses | Authors' Addresses | |||
| End of changes. 20 change blocks. | ||||
| 69 lines changed or deleted | 46 lines changed or added | |||
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