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TRILL OAM

TRILL OAM. Tissa Senevirathne 87 th IETF, Berlin Germany 2013. Requirements document is now RFC 6905 Framework document cleared WG last call. Fault management document is a WG document -01 of Performance management document published -00 of OAM MIB document available for review

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TRILL OAM

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  1. TRILL OAM Tissa Senevirathne 87th IETF, Berlin Germany 2013

  2. Requirements document is now RFC 6905 • Framework document cleared WG last call. • Fault management document is a WG document • -01 of Performance management document published • -00 of OAM MIB document available for review • We are behind on advertised (Vancouver) timelines for Fault-management document Updates

  3. Fault management document • MIB • Performance Management • Next steps Agenda

  4. Fault Management

  5. Added based on the review comments • IEEE CFM is flexible and extensible • Does not have out of the box, default operations mode • Base Mode provide out of the box, default mode, where all RBridges are members of a default Maintenance Association. • Virtual MEP is at the CPU • Allow to use Ping to test liveliness, • Trace route to test reachability • Can not be used to isolate faults to port level TRILL OAM Base Mode

  6. MEPID: RB-nickname MA Domain Name: TrillBaseMode MA Name : 65532 (0xFFFC) MD Level : 3 TRILL Base Mode Please refer to appendix B: draft-ietf-trill-oam-fm

  7. CCM was originally designed for single path 802.1 bridged networks • CCM uses a single RDI flag to denote failure to receive CCM probes. • In TRILL only a single flow/Path may be at fault among many flows. • In TRILL we use • Single RDI flag on CCM message: which is set on timeout of any flow from any remote partner • SNMP Notifications (traps) that notify last good flow and first good flow after the failure • Idea here is • RDI Flag tells there is a fault seen • Logs/SNMP allow to further isolate the failure to the exact flow • Path Trace message utilized to further isolate the failure along the path CCM and variation for TRILL (multipath)

  8. SNMP notification-1: Upon CCM timeout send with {Remote MEP-ID, flow-ID of the last good flow and last sequence number received } RDI flag is set on TO Can be sticky or reset After full cycle CCM from remote MEP-1 MEP-A SNMP notification-2: Upon CCM resumption {Remote MEP-ID, flow-ID of the first good flow and first sequence number received } CCM in TRILL Ref: Section 12.1 draft-ietf-trill-oam-fm

  9. RDI flag set for MEP-1 CCM from remote MEP-1 CCM {RDI=1} MEP-A OR => RDI No RDI flag set for MEP-2 CCM in TRILL – multiple remote MEP CCM from remote MEP-2 Ref: Section 12.1 draft-ietf-trill-oam-fm

  10. Second last paragraph, the last sentence reads: . . . “In the foregoing example, it is MEP-A, flow-id (1) and sequence number 9”. • This should read as . . . “In the foregoing example, it is MEP-A, flow-id (3)and sequence number 9”. Errata section 12.1

  11. Official liaison letter to SDOs to review fault management document • Review and WG adoption of Performance management document • Review of MIB document • Update of fault management and MIB document based on SDO comments • Target: Prior to next IETF Next steps

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