IGP Extension for Path Computation Element Communication Protocol Security Capability Support in PCE Discovery
RFC 9353, “IGP Extension for Path Computation Element Communication Protocol Security Capability Support in PCE Discovery”, is a Proposed Standard document published in January 2023 by D. Lopez, Q. Wu, D. Dhody, Q. Ma, D. King. It updates RFC 5088, RFC 5089, RFC 8231, RFC 8306. The canonical text is published by the RFC Editor.
Abstract
When a Path Computation Element (PCE) is a Label Switching Router (LSR) or a server participating in the Interior Gateway Protocol (IGP), its presence and path computation capabilities can be advertised using IGP flooding. The IGP extensions for PCE Discovery (PCED) (RFCs 5088 and 5089) define a method to advertise path computation capabilities using IGP flooding for OSPF and IS-IS, respectively. However, these specifications lack a method to advertise Path Computation Element Communication Protocol (PCEP) security (e.g., Transport Layer Security (TLS) and TCP Authentication Option (TCP-AO)) support capability.
This document defines capability flag bits for the PCE-CAP-FLAGS sub-TLV that can be announced as an attribute in the IGP advertisement to distribute PCEP security support information. In addition, this document updates RFCs 5088 and 5089 to allow advertisement of a Key ID or KEY-CHAIN-NAME sub-TLV to support TCP-AO security capability. This document also updates RFCs 8231 and 8306.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9353 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
- RFC 9352 IS-IS Extensions to Support Segment Routing over the IPv6 Data Plane
- RFC 9354 Transmission of IPv6 Packets over Power Line Communication Networks
- RFC 9351 Border Gateway Protocol - Link State Extensions for Flexible Algorithm Advertisement
- RFC 9355 OSPF Bidirectional Forwarding Detection Strict-Mode
- RFC 9350 IGP Flexible Algorithm
- RFC 9356 Advertising Layer 2 Bundle Member Link Attributes in OSPF
- RFC 9349 Definitions of Managed Objects for IP Traffic Flow Security
- RFC 9357 Label Switched Path Object Flag Extension for Stateful PCE