Technical Specification MEF 16 Ethernet Local Management Interface

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Ethernet Local Management Interface (E-LMI) 5.6.10 Handling of Error Conditions ................................................................................................ 33 5.6.10.1 Protocol Version Error ...................................................................................................... 34 5.6.10.2 Message too short .............................................................................................................. 34 5.6.10.3 Message type errors ........................................................................................................... 34 5.6.10.4 General information element errors .................................................................................. 34 5.6.10.4.1 Information element out of sequence ....................................................................................................... 34 5.6.10.4.2 Duplicated information and sub-information elements ........................................................................... 34 5.6.10.4.3 Mandatory information element missing .................................................................................................. 34 5.6.10.4.4 Mandatory information element error ...................................................................................................... 35 5.6.10.4.5 Unexpected recognized information element ........................................................................................... 35 5.6.11 E-LMI Operational Status Determination ............................................................................. 35 5.6.11.1 UNI-C Procedures ............................................................................................................. 35 5.6.11.2 UNI-N Procedures ............................................................................................................. 36 6. References .......................................................................................................................... 36 List of Figures Figure 1 – E-LMI Scope ................................................................................................................. 2 Figure 2 – E-LMI Termination in Functional Components ............................................................ 3 Figure 3 – E-LMI Framing structure .............................................................................................. 3 Figure 4 – General E-LMI message organization example ............................................................ 5 Figure 5 – STATUS message ......................................................................................................... 8 Figure 6 – Relationship between the Report Type and Information Elements in the STATUS message ................................................................................................................................... 9 Figure 7 – STATUS ENQUIRY message ...................................................................................... 9 Figure 8 – Coding of Protocol Version ........................................................................................... 9 Figure 9 – Message Type Information Element ........................................................................... 10 Figure 10 – Message Type Coding ............................................................................................... 10 Figure 11 – Report Type Information Element ............................................................................. 10 Figure 12 – Report Type Coding .................................................................................................. 10 Figure 13 –Sequence Numbers Information Element ................................................................... 11 Figure 14 – CE-VLAN ID/EVC Map Information Element ........................................................ 12 Figure 15 – UNI Status Information Element ............................................................................... 13 Figure 16 – CE-VLAN ID/EVC Map Type Coding ..................................................................... 13 Figure 17 – EVC Status Information Element .............................................................................. 13 Figure 18 – EVC Status Coding ................................................................................................... 13 Figure 19 – Data Instance Information Element ........................................................................... 14 Figure 20 – Bandwidth Profile Sub-information Element ............................................................ 15 Figure 21 – Coding in Bandwidth Profile Sub-information Element ........................................... 16 Figure 22 – EVC Map Entry Sub-information Element ............................................................... 16 Figure 23 – UNI Identifier Sub-information Element .................................................................. 17 Figure 24 – EVC Identifier Sub-information Element ................................................................. 17 Figure 25 – EVC Parameters Sub-Information Element .............................................................. 17 Figure 26 – EVC Type Coding ..................................................................................................... 18 Figure 27 – E-LMI Status Check Example ................................................................................... 22 Figure 28 – Full Status Continued Enquiry Operation ................................................................. 24 Figure 29 – Data Instance Exchange and Update in UNI-C and UNI-N ...................................... 26 Figure 30 – UNI-C Receives Errored Full Status Continued Response ....................................... 30 MEF 16 © The Metro Ethernet Forum 2006. Any reproduction of this document, or any portion thereof, shall contain the following statement: "Reproduced with permission of the Metro Ethernet Forum." No user of this document is authorized to modify any of the information contained herein. Page ii
Ethernet Local Management Interface (E-LMI) Figure 31 – UNI-C PT Expiry on Full Status Continued Response ............................................. 31 Figure 32 – UNI-N Receives Errored Full Status Continued Enquiry ......................................... 32 Figure 33 – UNI-N PVT Expiry ................................................................................................... 33 List of Tables Table 1 – Possible Status Combinations for a Point-to-Point EVC ................................................ 4 Table 2 – Possible Status Combinations for a Multipoint-to-Multipoint EVC .............................. 4 Table 3 – Information Element Identifiers ...................................................................................... 6 Table 4 – Sub-information Element Identifiers .............................................................................. 6 Table 5 – Presence of Sub-information Elements in the EVC Status Information Element ........ 14 Table 6 – System parameters – Counters ...................................................................................... 18 Table 7 – System parameters – Timers ......................................................................................... 19 Table 8 – Status for a Multipoint-to-Multipoint EVC .................................................................. 22 MEF 16 © The Metro Ethernet Forum 2006. Any reproduction of this document, or any portion thereof, shall contain the following statement: "Reproduced with permission of the Metro Ethernet Forum." No user of this document is authorized to modify any of the information contained herein. Page iii
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Page 3: Table of Contents Ethernet Local Ma
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Page 13 and 14: The structure of the STATUS message
Page 23 and 24: Bits 3 2 1 EVC Type 0 0 0 Point-to-
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Technical Specification MEF 16 Ethernet Local Management Interface

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