1. draft-nadeau-pwe3-msgmap-00.txt IETF #56 San Francisco, CA USA
Thomas D. Nadeau
Monique Morrow
George Swallow
ftp://ftp-eng.cisco.com/tnadeau/oam/draft-nadeau-pwe3-oam-msgmap-00.txt

2. Based on MPLS OAM and Customer Requirements
Driven by a need to provide a common set of OAM mappings from PWE3 transport networks to native OAM types.
ftp://ftp-eng.cisco.com/tnadeau/oam/draft-nadeau-mpls-oam-requirements-00.txt
Soon to be draft-ietf-mpls-oam-requirements-00.txt
Existing PW3 encapsulation drafts were spotty in their specification of OAM:
Some skipped this and some did not.
Inconsistent for implementations.

3. Overview
Provides details of how LSP ping/VCCV failures should translate into native ATM/FR OAM messages that PEs return to the native attachment interfaces.
OAM Emulation
AIS and RDI Generation for ATM AAL5 over MPLS
AIS/RDI Generation for ATM upon reception of label withdrawal and vice versa
LMI/ILMI based status notification upon label withdrawal reception for AToM VCs
LC-ATM/XTAG Interface status notification using OAM cells

4. OAM Message Mapping Example
ATM UNI/NNI
FR UNI/NNI
IP/MPLS
ATM
ATM CPE
ATM UNI FR
FR CPE
FR UNI
FR PVC
ATM PVC
MPLS PSN
Q.933
messages
MPLS PING, Traceroute, VCCV
F5/F4 end-to-end AOM cells
F5/F4 segment OAM cells
Interworking AOM cells
Interworking Q.933
AIS
RDI CC
Loopback
Loopback (I.620)

5. Open Issues Ethernet encapsulation OAM left as TBD.
Possible draft name change.

6. Next Steps Refinements
Editorial enhancements.
Accept as a PWE3 WG document to keep as a central point of OAM definition for PWE encapsulations.

7. Thank You