{"draft":"draft-ietf-pce-pcep-xro-06","doc_id":"RFC5521","title":"Extensions to the Path Computation Element Communication Protocol (PCEP) for Route Exclusions","authors":["E. Oki","T. Takeda","A. Farrel"],"format":["ASCII","HTML"],"page_count":"16","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Path Computation Element","abstract":"The Path Computation Element (PCE) provides functions of path\r\ncomputation in support of traffic engineering (TE) in Multi-Protocol\r\nLabel Switching (MPLS) and Generalized MPLS (GMPLS) networks.\r\n\r\nWhen a Path Computation Client (PCC) requests a PCE for a route, it\r\nmay be useful for the PCC to specify, as constraints to the path\r\ncomputation, abstract nodes, resources, and Shared Risk Link Groups\r\n(SRLGs) that are to be explicitly excluded from the computed route.\r\nSuch constraints are termed \"route exclusions\".\r\n\r\nThe PCE Communication Protocol (PCEP) is designed as a communication\r\nprotocol between PCCs and PCEs.  This document presents PCEP\r\nextensions for route exclusions.  [STANDARDS-TRACK]","pub_date":"April 2009","keywords":["[--------]","MPLS","GMPLS","Traffic Engineering","Label Switched Path"],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC5521","errata_url":"https:\/\/www.rfc-editor.org\/errata\/rfc5521"}