Tal Mizrahi Marvell IETF Meeting 78, July 2010 An Overview of Operations, Administration, and Maintenance (OAM) Mechanisms draft-ietf-opsawg-oam-overview-01 Tal Mizrahi Marvell IETF Meeting 78, July 2010

History of This Draft First draft submitted – Oct 2009. Accepted as WG document – Jan 2010 (draft 00). Current draft (01): Updated following feedbacks from the WG. Updated recent OAM standards (BFD, MPLS-TP OAM).

Introduction OAM: Operations, Admistration, Maintenance Scope of this document: OAM in the context of monitoring communication links. Out of scope: other stuff, e.g. management. This document summarizes: OAM standards. OAM terminology. OAM functions.

Summary of OAM Standards Description RFC / Standard ICMP Ping Internet Control Message Protocol RFC 792, RFC 4443 BFD Bidirectional Forwarding Detection RFC 5880, RFC 5881, RFC 5882, RFC 5583, RFC 5884, RFC 5885 IETF MPLS OAM (LSP Ping) Operations and Management (OAM) for Multi-Protocol Label Switched (MPLS) Networks RFC 4377, RFC 4378, RFC 4379, RFC 4687 PW VCCV Pseudowire Virtual Circuit Connectivity Verification (VCCV). RFC 5085 IPPM IP Performance Metrics RFC 2330 ITU-T MPLS OAM Operation & Maintenance mechanism for MPLS networks ITU-T Y.1711 Assignment of the 'OAM Alert Label‘ for MPLS OAM functions RFC 3429 MPLS-TP OAM Requirements for OAM in MPLS RFC 5860 MPLS Generic Associated Channel RFC 5586 ITU-T Ethernet OAM OAM Functions and Mechanisms for Ethernet-based Networks ITU-T Y.1731 IEEE CFM Connectivity Fault Management IEEE 802.1ag IEEE 802.3 link level OAM Ethernet on the First Mile (EFM) IEEE 802.3ah

Summary of OAM Functions Unidirectional Connectivity Check Bidirectional Connectivity Check Path Discovery Defect Indication Performance Monitoring Other Functions ICMP Ping Echo BFD BFD Control BFD Echo IETF MPLS OAM (LSP Ping) Ping mode Traceroute mode PW VCCV VCCV IPPM -Delay Measurement -Packet loss measurement ITU-T MPLS OAM -CV -FFD MPLS-TP OAM ITU-T Ethernet OAM ETH-CC ETH-LB ETH-LT -ETH-RDI -ETH-AIS -ETH-LM -ETH-DM -ETH-LCK -ETH-APS -ETH-TST IEEE CFM CC Loopback Linktrace IEEE 802.3 link level OAM Remote Loopback -Remote failure indication -Link monitoring

Next Steps Get more feedback from the WG. Proceed towards last call.