RFC 8751: Hierarchical Stateful Path Computation Element (PCE)
In plain English — editorial summary, not part of the RFC
A stateful Path Computation Element (PCE) maintains information on the current network state received from the Path Computation Clients (PCCs), including computed Label Switched Paths (LSPs), reserved resources within the network, and pending path computation requests. This information may then be considered when computing the path for a new traffic-engineered LSP or for any associated/dependent LSPs. The path-computation response from a PCE helps the PCC to gracefully establish the computed LSP. The Hierarchical Path Computation Element (H-PCE) architecture allows the optimum sequence of interconnected domains to be selected and network policy to be applied if applicable, via the use of a hierarchical relationship between PCEs. Combining the capabilities of stateful PCE and the hierarchical PCE would be advantageous. This document describes general considerations and use cases for the deployment of stateful, but not stateless, PCEs using the hierarchical PCE architecture.
Document record
- Document ID
- RFC8751
- Published
- March 2020
- Authors
- D. Dhody; Y. Lee; D. Ceccarelli; J. Shin; D. King
- Status
- INFORMATIONAL
- Stream
- IETF
- Area
- rtg
- Pages
- 21
- Also known as
- —
Related documents
Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.
- RFC 8745Path Computation Element Communication Protocol (PCEP) Extensions for Associating Working and Protection Label Switched Paths (LSPs) with Stateful PCEUpdated
March 2020
- RFC 8757Dynamic Link Exchange Protocol (DLEP) Latency Range ExtensionCurrent
March 2020
- RFC 8741Ability for a Stateful Path Computation Element (PCE) to Request and Obtain Control of a Label Switched Path (LSP)Current
March 2020
- RFC 8736PIM Message Type Space Extension and Reserved BitsObsoleted
February 2020
- RFC 8735Scenarios and Simulation Results of PCE in a Native IP NetworkCurrent
February 2020
- RFC 8733Path Computation Element Communication Protocol (PCEP) Extensions for MPLS-TE Label Switched Path (LSP) Auto-Bandwidth Adjustment with Stateful PCEUpdated
February 2020
- RFC 8770Host Router Support for OSPFv2Current
April 2020
- RFC 8775PIM Designated Router Load BalancingCurrent
April 2020
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
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