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Ethernet TSPEC and MEF Parameters

Ethernet TSPEC and MEF Parameters. draft-ietf-mef-ethernet-traffic-parameters-01.txt dimitri.papadimitriou@alcatel.be. Clarification Points. Point 1: Port vs Frame mode Point 2: VLAN Label. Port vs Frame mode (1). Switching Type (ST) in Label Request object = interface switching

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Ethernet TSPEC and MEF Parameters

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  1. Ethernet TSPEC and MEF Parameters draft-ietf-mef-ethernet-traffic-parameters-01.txt dimitri.papadimitriou@alcatel.be

  2. Clarification Points • Point 1: Port vs Frame mode • Point 2: VLAN Label

  3. Port vs Frame mode (1) • Switching Type (ST) in Label Request object = interface switching • Ethernet => L2SC (value 51) LABEL REQUEST object format: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Length | Class-Num ( ) | C-Type ( ) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | LSP Encoding |Switching Type | GPID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

  4. Port vs Frame mode (2) • Frame mode: individual Ethernet frame switching decision based on Ethernet MAC frame header e.g. VLAN • Port mode: Ethernet frame relayed from input to output port (independently of Ethernet MAC header) - framing only

  5. Port vs Frame mode (3) Ethernet SENDER_TSPEC object format: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Length | Class-Num (12)| C-Type (6) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Switching Granularity | MTU | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | ~ TLVs ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Switching Granularity (16 bits) indicates the type of link that comprises the requested Ethernet LSP. Defined values: Value Switching Granularity ----- --------------------- 1 Ethernet Port 2 Ethernet Frame

  6. Label • Port mode => port label (encoded over 32 bits) = component interface identifier • Frame mode => VLAN label (encoded over 12 bits - right justified)

  7. Label object and values • RFC4606 - VCAT case => multiple label values as part of Resv message • <label> set of one or more LABEL objects • CE-PE signaling (UNI) request for multiple labels => multiple TLV 129 in TSPEC (replaces multiplier field of SONET/SDH T_SPEC)

  8. Constraint set of labels • Per RFC 3473 include <label set> in Path message • <label_set> composed by a list of one or more LABEL_SET objects

  9. Question • Need to document these applicability statements in this I-D ? • My opinion: YES

  10. Update • mCoS LSP = single LSP (control plane) with multiple CoS (data plane) • index field in TLV 129 correspond to at least one of the index value included in the extended ClassType (CT) object [RFC4124], [MCOS] • WHY: base DS-TE nice but increase overhead of CP

  11. Next Step • Revision (soon after meeting) • Then LC • Liaison to OIF and other bodies looking at reusing “GMPLS” for Ethernet LSPs • Comments ?

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