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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

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
Contents
  • Intended Features
  • MIB Structure
  • Improvements
  • Open Issues
mib s intended features
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
mib structure i
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

mib structure ii
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

mib structure iii
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

mib structure iv
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

mib structure v
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

mib structure vi
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

improvements i
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
improvements ii
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
open issues
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