Label Switched Path (LSP) and Pseudowire (PW) Ping/Trace over MPLS Networks Using Entropy Labels (ELs)
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From: The IESG <email@example.com> To: "IETF-Announce" <firstname.lastname@example.org> Cc: email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, "The IESG" <email@example.com>, firstname.lastname@example.org, email@example.com Subject: Protocol Action: 'Label Switched Path (LSP) and Pseudowire (PW) Ping/Trace over MPLS Network using Entropy Labels (EL)' to Proposed Standard (draft-ietf-mpls-entropy-lsp-ping-05.txt) The IESG has approved the following document: - 'Label Switched Path (LSP) and Pseudowire (PW) Ping/Trace over MPLS Network using Entropy Labels (EL)' (draft-ietf-mpls-entropy-lsp-ping-05.txt) as Proposed Standard This document is the product of the Multiprotocol Label Switching Working Group. The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-entropy-lsp-ping/
Technical Summary Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute are methods used to test Equal-Cost Multipath (ECMP) paths. Ping is known as a connectivity verification method and Traceroute as a fault isolation method, as described in RFC 4379. When an LSP is signaled using the Entropy Label (EL) described in RFC 6790, the ability for LSP Ping and Traceroute operations to discover and exercise ECMP paths is lost for scenarios where LSRs apply different load balancing techniques. One such scenario is when some LSRs apply EL-based load balancing while other LSRs apply non-EL based load balancing (e.g., IP). Another scenario is when an EL-based LSP is stitched with another LSP which can be EL-based or non-EL based. This document extends the MPLS LSP Ping and Traceroute multipath mechanisms in RFC 6424 to allow the ability of exercising LSPs which make use of the EL. This document updates RFC 4379, RFC 6424, and RFC 6790. Working Group Summary The working group process was smooth, but generated quite a bit of discussion, all the discussion was focused on how to support the solution specified in the document. Document Quality We know of implementations of this draft. An implementation poll has been started and the shepherd write-up will be updated if and when further information is received. Personnel Loa Andersson is the Document Shepherd. Deborah Brungard is the Responsible Area Director.