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SCTP MIB

SCTP MIB. PRESENTATION. María C. Belinchón Maria.C.Belinchon@ericsson.com J. Javier Pastor J.Javier.Pastor@ericsson.com. 47th IETF Meeting Adelaide-Australia 26-31 March 2000. Contents. Intended Features MIB Structure Improvements Open Issues. MIB’s INTENDED FEATURES.

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SCTP MIB

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  1. SCTP MIB PRESENTATION María C. Belinchón Maria.C.Belinchon@ericsson.com J. Javier Pastor J.Javier.Pastor@ericsson.com 47th IETF Meeting Adelaide-Australia 26-31 March 2000

  2. Contents • Intended Features • MIB Structure • Improvements • Open Issues

  3. MIB’s INTENDED FEATURES • SCTP version 7 • Based on • RFC 2012: “SNMPv2 Management Information Base for the Transmission Control Protocol” • RFC 2452: “IP Version 6 Management Information Base for the Transmission Control Protocol” • Written using SMIv2 • Ready for SNMPv3 • Submission to IESG in May 2000

  4. MIB STRUCTURE (I) Per Association Variables General Variables Per Association Statistics Associations Table Local IP Addresses Table Remote IP Addresses Table Per TAddress variables Per TAddress Statistics State Related Variables Other Statistics

  5. MIB STRUCTURE (ii) General Variables RTO algorithm RTO minimum RTO maximum RTO initial Valid Cookie Life Max HB misses Max number of Retransmissions for Data Sending Max number of Retransmissions for start-up phase T1 initial value T2 initial value Maximum number of Input Streams Maximum number of associations

  6. MIB STRUCTURE (iii) Association Id Local SCTP Port Remote SCTP Port Number of Input Streams Number of Output Streams Remote Primary Address Association State Number of Retransmission Chunks Number of times this association goes down Number of dropped datagrams TABLE: Local Address TABLE: Remote Address Association TABLE

  7. MIB STRUCTURE (iv) Local IP Addresses TABLE IP Address Associations Table IP Address IP Address Status Retransmission Time-Out Heartbeat-flag Number of HB missed Number of Retransmitted Chunks Number of Times T1 has expired Number of Times T2 has expired Number of Times T3 has expired Remote IP Addresses TABLE

  8. MIB STRUCTURE (v) State Related Variables Number of Associations for which current state is ESTABLISHED or SHUTDOWN RECEIVED Number of transitions from COOKIE-SENT to ESTABLISHED Nr Transitions: CLOSED -> ESTABLISHED Nr of Times of direct transition from any state to CLOSED using an ABORT chunk Nr of Times of direct transition from SHUTDOWN-XXX to CLOSED

  9. MIB STRUCTURE (vi) Other Layer Statistics Number of OOTB messages Number of sent chunks Number of received chunks Number of chunks retransmitted Number of out-of-band chunks sent Number of out-of-band received chunks

  10. IMPROVEMENTS (I) • Syntax errors • Change the introduction into the recommended one • New Structure to clarify • Change Integer32 into INTEGER when appropriate • Range specification • Update MAX-ACCESS clause • Row Status

  11. IMPROVEMENTS (II) • Counter64 when needed • Handle of IPv4 and IPv6 for Multihoming (draft-ops-endpoint-07.txt ) • DropDatagrams counter in Association Table • Definitions of Units of Conformance • Fill up the References Section

  12. OPEN ISSUES • Object Identifier Branch • What does the word “chunks” mean in “Other Statistics”? • Out of band data can be excluded in “Other Statistics” • Consider to use the Counter64 type for statistics. It is no backwards compatible with SNMPv1

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