| draft-ietf-sigtran-sctp-mib-08Description: Request For CommentsYou can download source copies of the file as follows:
Listed below is the contents of file draft-ietf-sigtran-sctp-mib-08.txt.
Network Working Group J. Pastor
INTERNET-DRAFT M. Belinchon
Expires: May 2003 Ericsson
November, 2002
Stream Control Transmission Protocol
Management Information Base
<draft-ietf-sigtran-sctp-mib-08.txt>
Status of this memo
This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that other
groups may also distribute working documents as Internet-Drafts.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or cite them other than as "work in progress".
The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/lid-abstracts.txt
The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html
This document is an individual submission to the IETF. Comments
should be directed to the authors.
Abstract
The Stream Control Transmission Protocol (SCTP) is a reliable
transport protocol operating on top of a connectionless packet
network such as IP, designed to transport PSTN signaling messages
over the connectionless packet network, but is capable of broader
applications.
This memo defines the Management Information Base (MIB) module which
describes the minimum amount of objects needed to manage the
implementation of the SCTP.
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Open Issues
- Remove this section.
- Remove Revision History
- Decide under which object identifier branch of the SNMP tree,
SCTP should be placed. This value will be obtained when
submitted to the IETF queue.
- Update references to [RFC2012-update]
- Syntax of sctpAssocRemHostName
TABLE OF CONTENTS
Open Issues.........................................................2
1. Introduction.....................................................3
1.1 Abbreviations...................................................3
2. The SNMP Framework...............................................3
3. MIB Structure....................................................4
3.1 SCTP Objets.....................................................5
3.1.1 SCTP Statistics...............................................5
3.1.2 SCTP Parameters...............................................6
3.1.3 MIB Tables....................................................6
3.1.3.1 Association Table..........................................7
3.1.3.2 Reverse Lookup Table.......................................9
3.2 Conformance....................................................10
4. Definitions.....................................................11
5. Compiling Notes.................................................36
6. References......................................................37
6.1 Normative References...........................................37
6.1 Informative References.........................................38
7. Security Consideration..........................................39
8. Acknowledgments.................................................40
9. Authors' Addresses..............................................40
10. Revision History...............................................41
10.1 Changes from <SCTP-MIB-predraft-01.txt>.......................41
10.2 Changes from <draft-ietf-sigtran-sctp-mib-00.txt>.............41
10.3 Changes from <draft-ietf-sigtran-sctp-mib-01.txt>.............43
10.3 Changes from <draft-ietf-sigtran-sctp-mib-02.txt>.............44
10.4 Changes from <draft-ietf-sigtran-sctp-mib-03.txt>.............44
10.5 Changes from <draft-ietf-sigtran-sctp-mib-04.txt>.............45
10.6 Changes from <draft-ietf-sigtran-sctp-mib-05.txt>.............46
10.7 Changes from <draft-ietf-sigtran-sctp-mib-06.txt>.............47
10.8 Changes from <draft-ietf-sigtran-sctp-mib-07.txt>.............48
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1. Introduction
This memo defines the Management Information Base (MIB) module which
describes managed objects for implementations of the SCTP.
The document starts with a brief description of the SNMP framework
and continues with the MIB explanation and security consideration
among others.
The managed objects in this MIB module have been based on [RFC2012]
update: "Management Information Base for the Transmission Control
Protocol (TCP)" [TCPMIB], work in progress, and the RFC 3291 "Textual
Conventions for Internet Network Addresses" [TADDRESS], work in
progress.
Terms related to the SCTP architecture are explained in [RFC2960].
Other specific abbreviations are listed below.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
1.1 Abbreviations
DNS - Domain Name System
IANA - Internet Assigned Numbers Authority
IETF - Internet Engineering Task Force
IP - Internet Protocol
MIB - Management Information Base
RFC - Request For Comment
RTO - Retransmission Time Out
SCTP - Stream Control Transmission Protocol
SMI - Structure of Management Information
SNMP - Simple Network Management Protocol
TCB - Transmission Control Block
TCP - Transmission Control Protocol
2. The SNMP Framework
The SNMP Management Framework presently consists of five major
components:
- An overall architecture, described in [RFC2571].
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- Mechanisms for describing and naming objects and events for the
purpose of management. The first version of this Structure of
Management Information (SMI) is called SMIv1 and described in
[RFC1155] , [RFC1212] and [RFC1215]. The second version,
called SMIv2, is described in [RFC1902], [RFC1903] and
[RFC1904].
- Message protocols for transferring management information. The
first version of the SNMP message protocol is called SNMPv1 and
described in [RFC1157]. A second version of the SNMP message
protocol, which is not an Internet standards track protocol, is
called SNMPv2c and described in [RFC1901] and [RFC1906]. The
third version of the message protocol is called SNMPv3 and
described in [RFC1906], [RFC2272] and [RFC2574].
- Protocol operations for accessing management information. The
first set of protocol operations and associated PDU formats is
described in [RFC1157]. A second set of protocol operations
and associated PDU formats is described in [RFC1905].
- A set of fundamental applications described in [RFC2273] and
the view-based access control mechanism described in [RFC2575].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. Objects in the MIB are
defined using the mechanisms defined in the SMI. This memo specifies
a MIB module that is compliant to the SMIv2. A MIB conforming to the
SMIv1 can be produced through the appropriate translations. The
resulting translated MIB must be semantically equivalent, except
where objects or events are omitted because no translation is
possible (use of Counter64). Some machine-readable information in
SMIv2 will be converted into textual descriptions in SMIv1 during the
translation process. However, this loss of machine-readable
information is not considered to change the semantics of the MIB.
3. MIB Structure
This chapter will explain the main objects this MIB defines. A
detailed view of the MIB structure with the OID values is below.
MIB-2 {1 3 6 1 2 2}
+--(xxx)sctpMIB
|
+--(1) sctpObjects
| |
| +--(1) sctpStats
| | |
| | +-- <scalars>
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| |
| +--(2)sctpParameters
| | |
| | +-- <scalars>
| |
| +--(3) sctpAssocTable
| |
| +--(4) sctpAssocLocalAddressTable
| |
| +--(5) sctpAssocRemAddressTable
| |
| +--(6) sctpLookupLocalPortTable
| |
| +--(7) sctpLookupRemPortTable
| |
| +--(8) sctpLookupRemHostNameTable
| |
| +--(9) sctpLookupRemPrimIPAddrTable
| |
| +--(10) sctpLookupRemIPAddrTable
|
|
+--(2)sctpConformance
|
+--(1) sctpCompliances
| |
| +--(1) sctpCompliance
|
+--(2) sctpGroups
|
+--(1) sctpLayerParamsGroup
|
+--(2) sctpStatsGroup
|
+--(3) sctpPerAssocParamsGroup
The main groups are further explained along the MIB definition.
3.1 SCTP Objets
This branch contains the SCTP statistics and general parameters (both
of them scalars) and the SCTP MIB tables.
3.1.1 SCTP Statistics
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SCTP MIB includes both Counter32 and Counter64 to deal with
statistics. Counter64 has been applied to those counters, which are
likely to wrap around in less than one hour, according to [RFC2863].
In addition Gauge32 is also used.
3.1.1.1 State-Related Statistics
These measures are based in the TCP model, but adapted to the SCTP
states. They store the number of succeeded association attempts, how
many associations have been initiated by the local or the remote SCTP
layer, or just the number of associations terminated in a graceful
(by means of SHUTDOWN procedure) or ungraceful way (by means of CLOSE
procedure).
3.1.1.2 Statistics for traffic Measurements
It has been specified statistics related to the whole SCTP layer.
There are, e.g., statistics related to either SCTP packets or SCTP
chunks.
Statistics related to a specific association, or local/remote IP
addresses are defined inside its concerned table.
3.1.2 SCTP Parameters
This section of the MIB contains the general variables of the
SCTP protocol. Maximum, minimum, initial values, and values by
default are listed here.
SCTP RTO mechanism definition is based on the TCP MIB [RFC2012-
update]. In SCTP protocol, only options 'other' and 'vanj' are valid
since SCTP protocol defines Van Jacobson's algorithm as the one to
be used to calculate RTO. 'Other' is left for future use.
3.1.3 MIB Tables
There are several tables included in the SCTP MIB. The first group
deals with the Association variables and is composed of a main and
two extended tables. The second group is a bunch of tables used for
the reverse lookup.
It is NOT possible to create rows in any table (sctpAssocTable,
sctpAssocLocalAddressTable, sctpRemAddressTable and Reverse Lookup
tables).
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It is NOT possible to delete rows in any table except in
sctpAssocTable under the particular conditions explained below.
3.1.3.1 Association Table
This is the main MIB table, where all the association related
information is stored per association basis. It is structured
according to expanded tables. The main table is called sctpAssocTable
and is indexed by sctpAssocId (the association identification) that
is a value that uniquely identifies an association. The MIB does not
restrict which value must be written here,, however it must be unique
within the table.
The sctpAssoc index is also shared by two more tables:
- sctpAssocLocalAddressTable: to store the local IP address(-es).
- sctpAssocRemAddressTable: to store the remote addresses and the
per-remote-address(-es)related information.
Entries in the sctpAssocTable are created when trying to establish
the association, i.e., when sending the COOKIE-ECHO message
(originating side) or the COOKIE-ACK message (server side). At this
point, i.e., at established state, all entry fields are filled in
with valid values.
Note: The following representation is a conceptual mode of describing
the relationship between the tables in this MIB. Note that the real
relationship of the tables is by sharing an index, so tables are not
truly within tables. Every entry is explained when defining the
corresponding objects in the MIB.
MIB-2 {1 3 6 1 2 2}
+--(xxx)sctpMIB
|
+--(1) sctpObjects
| |
. .
. .
|
+--(3) sctpAssocTable
| |
| +--(1) sctpAssocId (index)
| |
| +--(1) sctpAssocRemHostName
| |
| +--(1) sctpAssocLocalPort
| |
| +--(1) sctpAssocRemPort
| |
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| +--(1) sctpAssocRemPrimaryAddressType
| |
| +--(1) sctpAssocRemPrimaryAddress
| |
| +--(1) sctpAssocHeartBeatInterval
| |
| +--(1) sctpAssocState
| |
| +--(1) sctpAssocInStreams
| |
| +--(1) sctpAssocOutStreams
| |
| +--(1) sctpAssocMaxRetr
| |
| +--(1) sctpAssocPrimaryProcess
| |
| +--(1) sctpAssocT1expireds
| |
| +--(1) sctpAssocT2expireds
| |
| +--(1) sctpAssocRtxChunks
| |
| +--(1) sctpAssocStartTime
| |
| +--(1) sctpAssocDiscontinuityTime
|
|
+--(4) sctpAssocLocalAddressTable
| |
| |-- sctpAssocId (shared index)
| |
| +--(1) sctpAssocLocalAddressType(index)
| |
| +--(1) sctpAssocLocalAddress (index)
| |
| +--(1) sctpAssocLocalAddressStartTime
|
|
+--(5) sctpAssocRemAddressTable
| |
| |-- sctpAssocId (shared index)
| |
| +--(1) sctpAssocRemAddressType (index)
. |
. +--(1) sctpAssocRemAddress (index)
. |
+--(1) sctpAssocRemAddressActive
|
+--(1) sctpAssocRemAddressHBActive
|
+--(1) sctpAssocRemAddressRTO
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|
+--(1) sctpAssocRemAddressMaxPathRtx
|
+--(1) sctpAssocRemAddressRtx
|
+--(1) sctpAssocRemAddressStartTime
Both sctpAssocLocalAddressTable and sctpAssocRemAddressTable are
indexed by addresses. 'Address' and 'AddressType' use the syntax
InetAddress and InetAddressType defined in the Textual Conventions
for Internet Network Address [RFC 3291]. In the general case this
syntax is valid for Unknown IP addresses, IPv4, IPv6, non-global
IPv4, non-global IPv6 address and DNS, but only the IPv4 and IPv6
address options will be allowed in this MIB.
The sctpAssocLocalAddressTable table will have as many entries as
local IP addresses have been defined. The sctpAssocRemAddressTable
table will contain as many entries as remote IP addresses are known
to reach the peer. For multihoming concept see reference [RFC2960].
DNS value is not used to identify an IP address since it is only
valid during initialization (once this stage is finished, both sides
only use IP addresses).
To keep the name of the remote peer (when provided by the peer at
initialization time), an entry has been created in the sctpAssocTable
(sctpAssocRemHostName). When no DNS name is provided by the remote
endpoint, this value will be NULL (zero-length string). Otherwise,
the received DNS name will be stored here.
If it is required to abort an existing association, the value
deleteTCB has to be written in the variable sctpAssocState. That is
the only way to delete rows in any of the mentioned tables.
3.1.3.2 Reverse Lookup Table
There are five reverse lookup tables to help management applications
to efficiently access conceptual rows in other tables. This is the
way for not performing expensive tree walks through large number of
associations.
All of these tables are optional. In case of implementing them, any
entry must be created after the main table (sctpAssocTable) concerned
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entry has been created. This ensures that the field indexing the
lookup table exists.
The defined reversed lookup tables allow performing a lookup using
the following variables:
- Local Port: It allows a management application to find out all
the associations that use a specific local port
- Remote Port: It allows a management application to find out all
the associations that use a specific remote port
- Remote Host Name: It allows a management application to find
out all the associations to a specific host name.
- Remote Primary IP Address: It allows a management application
to find out all the associations that use a specific remote IP
address as primary.
- Remote IP address: a management application to find out all the
associations that use a specific remote IP address.
As an example the picture below shows the table to look up by local
port.
MIB-2 {1 3 6 1 2 2}
+--(xxx)sctpMIB
|
+--(1) sctpObjects
| |
. .
. .
| |
| +--(6) sctpLookupLocalPortTable
| | |
. . +--(1) sctpAssocLocalPort (index)
. . |
+--(2) sctpAssocId (index)
|
+--(3) sctpAssocState
All the lookup tables contains the sctpAssocState object. This allows
getting the three objects in an easier way.
It is not possible to either create or delete rows in these tables.
3.2 Conformance
The conformance section recommends as optional the general SCTP
statistics and those per association or remote IP address statistics.
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Also, IP address will take the format of IPv4 and IPv6 addresses (not
scoped). DNS name will not be accepted either (since names will be
stored � if present � in the sctpRemoteHostName variable).
4. Definitions
SCTP-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, Integer32, Unsigned32, Gauge32,
Counter32, Counter64, mib-2
FROM SNMPv2-SMI -- RFC2578
TimeStamp, TruthValue
FROM SNMPv2-TC -- RFC2579
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF -- RFC2580
InetAddressType, InetAddress, InetPortNumber
FROM INET-ADDRESS-MIB -- RFC 3291
;
sctpMIB MODULE-IDENTITY
LAST-UPDATED "200208290000Z" -- 29th August 2002
ORGANIZATION "IETF SIGTRAN Working Group"
CONTACT-INFO
" Maria-Carmen Belinchon-Vergara
Jose-Javier Pastor-Balbas
Postal: Ericsson Espana S. A.
C/ Retama 1
28045 Madrid
Spain
Phones: +34 91 339 3535
+34 91 339 3819
Emails: [email protected]
[email protected]"
DESCRIPTION
"The MIB module for managing an SCTP implementation."
REVISION "200208290000Z" -- 29th August 2002
DESCRIPTION " Initial version, published as RFC XXXX"
-- RFC Editor to assign XXXX
::= { mib-2 xxxx 300 } -- IANA to assign xxxx
-- the SCTP base variables group
sctpObjects OBJECT IDENTIFIER ::= { sctpMIB 1 }
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sctpStats OBJECT IDENTIFIER ::= { sctpObjects 1 }
sctpParams OBJECT IDENTIFIER ::= { sctpObjects 2 }
-- STATISTICS
-- **********
-- STATE-RELATED STATISTICS
sctpCurrEstab OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of SCTP associations for which the current state
is either ESTABLISHED, SHUTDOWN-RECEIVED or SHUTDOWN-PENDING."
::= { sctpStats 1 }
sctpActiveEstabs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times that SCTP associations have made a direct
transition to the ESTABLISHED state from the COOKIE-ECHOED
state: COOKIE-ECHOED -> ESTABLISHED. The upper layer has
initiated the association attempt."
::= { sctpStats 2 }
sctpPassiveEstabs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times that SCTP associations have made a direct
transition to the ESTABLISHED state from the CLOSED state:
CLOSED -> ESTABLISHED. The remote endpoint has initiated the
association attempt."
::= { sctpStats 3 }
sctpAborteds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
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STATUS current
DESCRIPTION
"The number of times that SCTP associations have made a direct
transition to the CLOSED state from any state using the
primitive 'ABORT': AnyState --Abort--> CLOSED. Ungraceful
termination of the association."
::= { sctpStats 4 }
sctpShutdowns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times that SCTP associations have made a direct
transition to the CLOSED state from either the SHUTDOWN-SENT
state or the SHUTDOWN-ACK-SENT state. Graceful termination of
the association."
::= { sctpStats 5 }
-- OTHER LAYER STATISTICS
sctpOutOfBlues OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of out of the blue packets (SCTP packet correctly
formed -right checksum- but the receiver is not able to
identify the association to which this packet belongs)
received by the host."
::= { sctpStats 6 }
sctpChecksumErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of SCTP packets received from the peers with an
invalid checksum."
::= { sctpStats 7 }
sctpOutCtrlChunks OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"Number of SCTP control chunks sent to the peers (no
retransmissions included)."
::= { sctpStats 8 }
sctpOutOrderChunks OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of SCTP ordered data chunks sent to the peers (no
retransmissions included)."
::= { sctpStats 9 }
sctpOutUnorderChunks OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of SCTP unordered chunks (data chunks in which the U
bit is set to 1) sent to the peers (no retransmissions
included)."
::= { sctpStats 10 }
sctpInCtrlChunks OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of SCTP control chunks received from the peers (no
duplicated included)."
::= { sctpStats 11 }
sctpInOrderChunks OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of SCTP ordered data chunks received from the peers
(no duplicated included)."
::= { sctpStats 12 }
sctpInUnorderChunks OBJECT-TYPE
SYNTAX Counter64
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MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of SCTP unordered chunks (data chunks in which the U
bit is set to 1) received from the peers (no duplicated
included)."
::= { sctpStats 13 }
sctpFragUsrMsgs OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of user messages that have to be fragmented because of
the MTU."
::= { sctpStats 14 }
sctpReasmUsrMsgs OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of user messages reassembled."
::= { sctpStats 15 }
sctpOutSCTPPacks OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of SCTP packets sent to the peers."
::= { sctpStats 16 }
sctpInSCTPPacks OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of SCTP packets received from the peers."
::= { sctpStats 17 }
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-- PROTOCOL GENERAL VARIABLES
-- **************************
sctpRtoAlgorithm OBJECT-TYPE
SYNTAX INTEGER {
other(1), -- Other new one. Future use
vanj(2) -- Van Jacobson's algorithm
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The algorithm used to determine the timeout value (T3-rtx)
used for re-transmitting unacknowledged chunks."
::= { sctpParams 1 }
sctpRtoMin OBJECT-TYPE
SYNTAX Unsigned32
UNITS "milliseconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum value permitted by a SCTP implementation for the
retransmission timeout, measured in milliseconds. More
refined semantics for objects of this type depend upon the
algorithm used to determine the retransmission timeout.
The recommended value is 1000 milliseconds as per [RFC2960].
Zero value means immediate re-transmission.
The value of this object has to be lower or equal than
stcpRtoMax's value."
::= { sctpParams 2 }
sctpRtoMax OBJECT-TYPE
SYNTAX Unsigned32
UNITS "milliseconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum value permitted by a SCTP implementation for the
retransmission timeout, measured in milliseconds. More
refined semantics for objects of this type depend upon the
algorithm used to determine the retransmission timeout.
Recommended value is 60000 milliseconds as per [RFC2960]. Zero
value means immediate re-transmission.
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The value of this object has to be greater or equal than
stcpRtoMin's value."
::= { sctpParams 3 }
sctpRtoInitial OBJECT-TYPE
SYNTAX Unsigned32
UNITS "milliseconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Initial value for the Retransmission timer. Recommended value
is 3000 milliseconds as per [RFC2960]. Zero value means
immediate re-transmission."
::= { sctpParams 4 }
sctpMaxAssociations OBJECT-TYPE
SYNTAX Integer32 (-1 | 0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The limit on the total number of SCTP associations the entity
can support. In entities where the maximum number of
associations is dynamic, this object should contain the value
-1."
::= { sctpParams 5 }
sctpValCookieLife OBJECT-TYPE
SYNTAX Unsigned32
UNITS "milliseconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Valid cookie life in the 4-way start-up handshake procedure.
Recommended value: 60000 milliseconds."
::= { sctpParams 6 }
sctpMaxInitRetr OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
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"The maximum number of retransmissions at the start-up phase
(INIT and COOKIE ECHO chunks). Recommended value: 8 attempts."
::= { sctpParams 7 }
-- TABLES
-- ******
-- the SCTP Association TABLE
-- The SCTP association table contains information about each
-- association in which the local endpoint is involved.
sctpAssocTable OBJECT-TYPE
SYNTAX SEQUENCE OF SctpAssocEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing SCTP association-specific information."
::= { sctpObjects 3 }
sctpAssocEntry OBJECT-TYPE
SYNTAX SctpAssocEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"General common variables and statistics for the whole
association."
INDEX { sctpAssocId }
::= { sctpAssocTable 1 }
SctpAssocEntry ::= SEQUENCE {
sctpAssocId Unsigned32,
sctpAssocRemHostName OCTET STRING,
sctpAssocLocalPort InetPortNumber,
sctpAssocRemPort InetPortNumber,
sctpAssocRemPrimaryAddressType InetAddressType,
sctpAssocRemPrimaryAddress InetAddress,
sctpAssocHeartBeatInterval Unsigned32,
sctpAssocState INTEGER,
sctpAssocInStreams Unsigned32,
sctpAssocOutStreams Unsigned32,
sctpAssocMaxRetr Unsigned32,
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sctpAssocPrimaryProcess Unsigned32,
sctpAssocT1expireds Counter32, -- Statistic
sctpAssocT2expireds Counter32, -- Statistic
sctpAssocRtxChunks Counter32, -- Statistic
sctpAssocStartTime TimeStamp,
sctpAssocDiscontinuityTime TimeStamp
}
sctpAssocId OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Association Identification. Value identifying the
association. The recommended option is to use the local
Initiate Tag, a.k.a. Verification Tag (see [RFC2960]). "
::= { sctpAssocEntry 1 }
sctpAssocRemHostName OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..115))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Peer's DNS name. Currently only US ASCII format is the only
one allowed by DNS. But this object is open to include UTF-8
names if DNS evolve in this way.
If no DNS domain name was received at init time (embedded in
the INIT or INIT-ACK chunk) from the peer, this entry will be
meaningless, therefore it will contain a zero-length string
value. Otherwise, the remote host name received at init time
will be stored."
::= { sctpAssocEntry 2 }
sctpAssocLocalPort OBJECT-TYPE
SYNTAX InetPortNumber (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Local SCTP port number used for this association.."
::= { sctpAssocEntry 3 }
sctpAssocRemPort OBJECT-TYPE
SYNTAX InetPortNumber (1..65535)
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MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Remote SCTP port number used for this association."
::= { sctpAssocEntry 4 }
sctpAssocRemPrimaryAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Internet type of primary remote IP address.
Only IPv4 and IPv6 addresses are expected."
::= { sctpAssocEntry 5 }
sctpAssocRemPrimaryAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Primary remote IP address. The type of this address is
determined by the value of sctpAssocRemPrimaryAddressType.
The client side will know this value after INIT_ACK message
reception, the server side will know this value when sending
INIT ACK message. However, values will be filled in at
established state."
::= { sctpAssocEntry 6 }
sctpAssocHeartBeatInterval OBJECT-TYPE
SYNTAX Unsigned32
UNITS "milliseconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current heartbeat interval. The recommended default value
is 30000 milliseconds as per [RFC2960].
Zero value means no HeartBeat, even when the concerned
sctpAssocRemAddressHBFlag object is active."
::= { sctpAssocEntry 7 }
sctpAssocState OBJECT-TYPE
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SYNTAX INTEGER {
closed(1),
cookieWait(2),
cookieEchoed(3),
established(4),
shutdownPending(5),
shutdownSent(6),
shutdownReceived(7),
shutdownAckSent(8),
deleteTCB(9)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The state of this SCTP association.
As in TCP, deleteTCB is the only value that may be set by a
management station. If any other value is received, then the
agent must return a badValue error.
If a management station sets this object to the value
deleteTCB(9), then this has the effect of deleting the TCB (as
defined in SCTP) of the corresponding association on the
managed node, resulting in immediate termination of the
association.
A SET operation to the same(current) value is allowed.
As an implementation-specific option, an ABORT chunk may be
sent from the managed node to the other SCTP endpoint."
::= { sctpAssocEntry 8 }
sctpAssocInStreams OBJECT-TYPE
SYNTAX Unsigned32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Inbound Streams according to the negotiation at association
start up. "
::= { sctpAssocEntry 9 }
sctpAssocOutStreams OBJECT-TYPE
SYNTAX Unsigned32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Outbound Streams according to the negotiation at association
start up. "
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::= { sctpAssocEntry 10 }
sctpAssocMaxRetr OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of data retransmissions in the association
context. This value is specific for each association and the
upper layer can change it calling the appropriate primitives.
This value has to be smaller than the addition of all the
maximum number for all the paths
(sctpAssocRemAddressMaxPathRtx).
Recommended value: 10 attempts.
Zero value means no retransmissions."
::= { sctpAssocEntry 11 }
sctpAssocPrimaryProcess OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number identifies the system level process which
holds primary responsibility of the SCTP association.
Wherever possible, this should be the system's native
unique identification number. The special value 0 can
be used to indicate that no primary process is known.
Note that the value of this object can be used as a
pointer into the swRunTable of the HOST-RESOURCES-MIB
(if the value is smaller than 2147483647) or into the
sysApplElmtRunTable of the SYSAPPL-MIB."
::= { sctpAssocEntry 12 }
-- Association Statistics
sctpAssocT1expireds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
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"Number of times that T1 timer expired (timer for sending
either INIT or COOKIE-ECHO chunks and receiving an
acknowledgment).
Discontinuities in the value of this counter can occur at re-
initialization of the management system, and at other times as
indicated by the value of sctpAssocDiscontinuityTime."
::= { sctpAssocEntry 13 }
sctpAssocT2expireds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times that T2-shutdown timer expired (shutdown
timer).
Discontinuities in the value of this counter can occur at re-
initialization of the management system, and at other times as
indicated by the value of sctpAssocDiscontinuityTime."
::= { sctpAssocEntry 14 }
sctpAssocRtxChunks OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of data chunks retransmitted to the peer in the
current association.
Discontinuities in the value of this counter can occur at re-
initialization of the management system, and at other times as
indicated by the value of sctpAssocDiscontinuityTime."
::= { sctpAssocEntry 15 }
sctpAssocStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of SysUpTime at the time that this row association
was established. The value of this object will be zero:
- before the association enters the established state, or
- if the established state was entered prior to the last
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re-initialization of the local network management
subsystem."
::= { sctpAssocEntry 16 }
sctpAssocDiscontinuityTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime on the most recent occasion at which
any one or more of this sctp's counters suffered a
discontinuity. The relevant counters are the specific
instances associated with this interface of any Counter32 or
Counter64 object contained in the sctpAssocTable or
sctpXTable. If no such discontinuities have occurred since
the last re-initialization of the local management subsystem,
then this object contains a zero value. The inclusion of this
object is recommended by [RFC2578]"
::= { sctpAssocEntry 17 }
-- Expanded tables: Including Multi-home feature
-- Local Address TABLE
-- *******************
sctpAssocLocalAddressTable OBJECT-TYPE
SYNTAX SEQUENCE OF SctpAssocLocalAddressEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Expanded table of sctpAssocTable based on the AssocId index.
This table shows data related to each local IP address which
is used by this association."
::= { sctpObjects 4 }
sctpAssocLocalAddressEntry OBJECT-TYPE
SYNTAX SctpAssocLocalAddressEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Local information about the available addresses. There will
be an entry for every local IP address defined for this
association."
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INDEX { sctpAssocId, -- shared index
sctpAssocLocalAddressType,
sctpAssocLocalAddress }
::= { sctpAssocLocalAddressTable 1 }
SctpAssocLocalAddressEntry ::= SEQUENCE {
sctpAssocLocalAddressType InetAddressType,
sctpAssocLocalAddress InetAddress,
sctpAssocLocalAddressStartTime TimeStamp
}
sctpAssocLocalAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Internet type of local IP address used for this association.
Only IPv4 and IPv6 addresses are expected."
::= { sctpAssocLocalAddressEntry 1 }
sctpAssocLocalAddress OBJECT-TYPE
SYNTAX InetAddress (SIZE(1..36))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of a local IP address available for this
association. The type of this address is determined by the
value of sctpAssocLocalAddressType. "
::= { sctpAssocLocalAddressEntry 2 }
sctpAssocLocalAddressStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of SysUpTime at the time that this row was
created."
::= { sctpAssocLocalAddressEntry 3 }
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-- Remote Addresses TABLE
-- **********************
sctpAssocRemAddressTable OBJECT-TYPE
SYNTAX SEQUENCE OF SctpAssocRemAddressEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Expanded table of sctpAssocTable based on the AssocId index.
This table shows data related to each remote peer IP address
which is used by this association."
::= { sctpObjects 5 }
sctpAssocRemAddressEntry OBJECT-TYPE
SYNTAX SctpAssocRemAddressEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about the most important variables for every
remote IP address. There will be an entry for every remote IP
address defined for this association."
INDEX { sctpAssocId, -- shared index
sctpAssocRemAddressType,
sctpAssocRemAddress }
::= { sctpAssocRemAddressTable 1 }
SctpAssocRemAddressEntry ::= SEQUENCE {
sctpAssocRemAddressType InetAddressType,
sctpAssocRemAddress InetAddress,
sctpAssocRemAddressActive TruthValue,
sctpAssocRemAddressHBActive INTEGER,
sctpAssocRemAddressRTO Unsigned32,
sctpAssocRemAddressMaxPathRtx Unsigned32,
sctpAssocRemAddressRtx Counter32, -- Statistic
sctpAssocRemAddressStartTime TimeStamp
}
sctpAssocRemAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Internet type of a remote IP address available for this
association.
Only IPv4 and IPv6 addresses are expected."
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::= { sctpAssocRemAddressEntry 1 }
sctpAssocRemAddress OBJECT-TYPE
SYNTAX InetAddress (SIZE(1..36))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of a remote IP address available for this
association. The type of this address is determined by the
value of sctpAssocLocalAddressType. "
::= { sctpAssocRemAddressEntry 2 }
sctpAssocRemAddressActive OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object gives information about the reachability of this
specific remote IP address.
When the object is set to 'true' (1), the remote IP address is
understood as Active. Active means that the threshold of no
answers received from this IP address has not been reached.
When the object is set to 'false' (2), the remote IP address
in understood as Inactive. Inactive means that either no
heartbeat or any other message was received from this address,
reaching the threshold defined by the protocol."
REFERENCE
"The remote transport states are defined as Active and
Inactive in the SCTP, [RFC2960]."
::= { sctpAssocRemAddressEntry 3 }
sctpAssocRemAddressHBActive OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates whether the optional Heartbeat check
associated to one destination transport address is activated
or not (value equal to true or false, respectively). "
::= { sctpAssocRemAddressEntry 4 }
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sctpAssocRemAddressRTO OBJECT-TYPE -- T3-rtx- Timer
SYNTAX Unsigned32
UNITS "milliseconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current Retransmission Timeout. T3-rtx timer as defined
in the protocol SCTP."
::= { sctpAssocRemAddressEntry 5 }
sctpAssocRemAddressMaxPathRtx OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Maximum number of DATA chunks retransmissions allowed to a
remote IP address before it is considered inactive, as defined
in [RFC2960]. Recommended value 5 attempts."
::= { sctpAssocRemAddressEntry 6 }
-- Remote Address Statistic
sctpAssocRemAddressRtx OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of DATA chunks retransmissions as defined in
[RFC2960].
Discontinuities in the value of this counter can occur at re-
initialization of the management system, and at other times as
indicated by the value of sctpAssocDiscontinuityTime."
::= { sctpAssocRemAddressEntry 7 }
sctpAssocRemAddressStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of SysUpTime at the time that this row was
created."
::= { sctpAssocRemAddressEntry 8 }
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-- ASSOCIATION INVERSE TABLE
-- *************************
-- BY LOCAL PORT
sctpLookupLocalPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF SctpLookupLocalPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"With the use of this table, a list of associations which are
using the specified local port can be got"
::= { sctpObjects 6 }
sctpLookupLocalPortEntry OBJECT-TYPE
SYNTAX SctpLookupLocalPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is indexed by local port and association ID.
Specifying a local port, we would get a list of the
associations whose local port is the one specified"
INDEX { sctpAssocLocalPort,
sctpAssocId }
::= { sctpLookupLocalPortTable 1 }
SctpLookupLocalPortEntry::= SEQUENCE {
sctpLookupLocalPortStartTime TimeStamp
}
sctpLookupLocalPortStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of SysUpTime at the time that this row was
created."
::= { sctpLookupLocalPortEntry 1 }
-- BY REMOTE PORT
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sctpLookupRemPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF SctpLookupRemPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"With the use of this table, a list of associations which are
using the specified remote port can be got"
::= { sctpObjects 7 }
sctpLookupRemPortEntry OBJECT-TYPE
SYNTAX SctpLookupRemPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is indexed by remote port and association ID.
Specifying a remote port we would get a list of the
associations whose local port is the one specified "
INDEX { sctpAssocRemPort,
sctpAssocId }
::= { sctpLookupRemPortTable 1 }
SctpLookupRemPortEntry::= SEQUENCE {
sctpLookupRemPortStartTime TimeStamp
}
sctpLookupRemPortStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of SysUpTime at the time that this row was
created."
::= { sctpLookupRemPortEntry 1 }
-- BY REMOTE HOST NAME
sctpLookupRemHostNameTable OBJECT-TYPE
SYNTAX SEQUENCE OF SctpLookupRemHostNameEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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"With the use of this table, a list of associations with that
particular host can be got"
::= { sctpObjects 8 }
sctpLookupRemHostNameEntry OBJECT-TYPE
SYNTAX SctpLookupRemHostNameEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is indexed by remote host name and association ID.
Specifying a host name we would get a list of the associations
specifying that host name as the remote one"
INDEX { sctpAssocRemHostName,
sctpAssocId }
::= { sctpLookupRemHostNameTable 1 }
SctpLookupRemHostNameEntry::= SEQUENCE {
sctpLookupRemHostNameStartTime TimeStamp
}
sctpLookupRemHostNameStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of SysUpTime at the time that this row was
created."
::= { sctpLookupRemHostNameEntry 1 }
-- BY REMOTE PRIMARY IP ADDRESS
sctpLookupRemPrimIPAddrTable OBJECT-TYPE
SYNTAX SEQUENCE OF SctpLookupRemPrimIPAddrEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"With the use of this table, it can be got a list of
associations that have that the specified IP address as
primary within the remote set of active addresses "
::= { sctpObjects 9 }
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sctpLookupRemPrimIPAddrEntry OBJECT-TYPE
SYNTAX SctpLookupRemPrimIPAddrEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is indexed by primary address and association ID.
Specifying a primary address, we would get a list of the
associations that have the specified remote IP address marked
as primary. "
INDEX { sctpAssocRemPrimaryAddressType,
sctpAssocRemPrimaryAddress,
sctpAssocId }
::= { sctpLookupRemPrimIPAddrTable 1 }
SctpLookupRemPrimIPAddrEntry::= SEQUENCE {
sctpLookupRemPrimIPAddrStartTime TimeStamp
}
sctpLookupRemPrimIPAddrStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of SysUpTime at the time that this row was
created."
::= { sctpLookupRemPrimIPAddrEntry 1 }
-- BY REMOTE IP ADDRESS
sctpLookupRemIPAddrTable OBJECT-TYPE
SYNTAX SEQUENCE OF SctpLookupRemIPAddrEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"With the use of this table, a list of associations that have
the specified IP address as one of the remote ones can be got"
::= { sctpObjects 10 }
sctpLookupRemIPAddrEntry OBJECT-TYPE
SYNTAX SctpLookupRemIPAddrEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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"This table is indexed by a remote IP address and association
ID. Specifying an IP address we would get a list of the
associations that have the specified IP address included
within the set of remote IP addresses"
INDEX { sctpAssocRemAddressType,
sctpAssocRemAddress,
sctpAssocId }
::= { sctpLookupRemIPAddrTable 1 }
SctpLookupRemIPAddrEntry::= SEQUENCE {
sctpLookupRemIPAddrStartTime TimeStamp
}
sctpLookupRemIPAddrStartTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of SysUpTime at the time that this row was
created."
::= { sctpLookupRemIPAddrEntry 1 }
-- 4.1 Conformance Information
sctpConformance OBJECT IDENTIFIER ::= { sctpMIB 2 }
sctpCompliances OBJECT IDENTIFIER ::= { sctpConformance 1 }
sctpGroups OBJECT IDENTIFIER ::= { sctpConformance 2 }
-- 4.1.1 Units of conformance
--
-- MODULE GROUPS
--
sctpLayerParamsGroup OBJECT-GROUP
OBJECTS { sctpRtoAlgorithm,
sctpRtoMin,
sctpRtoMax,
sctpRtoInitial,
sctpMaxAssociations,
sctpValCookieLife,
sctpMaxInitRetr
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}
STATUS current
DESCRIPTION
"Common parameters for the SCTP layer, i.e. for all the
associations. They can usually be referred as configuration
parameters."
::= { sctpGroups 1 }
sctpStatsGroup OBJECT-GROUP
OBJECTS {sctpCurrEstab,
sctpActiveEstabs,
sctpPassiveEstabs,
sctpAborteds,
sctpShutdowns,
sctpOutOfBlues,
sctpChecksumErrors,
sctpOutCtrlChunks,
sctpOutOrderChunks,
sctpOutUnorderChunks,
sctpInCtrlChunks,
sctpInOrderChunks,
sctpInUnorderChunks,
sctpFragUsrMsgs,
sctpReasmUsrMsgs,
sctpOutSCTPPacks,
sctpInSCTPPacks,
sctpAssocT1expireds,
sctpAssocT2expireds,
sctpAssocRtxChunks,
sctpAssocRemAddressRtx
}
STATUS current
DESCRIPTION
"Statistics group. It includes the objects to collect state
changes in the SCTP protocol local layer and flow control
statistics. Also per-association statistics are included."
::= { sctpGroups 2 }
sctpPerAssocParamsGroup OBJECT-GROUP
OBJECTS {sctpAssocRemHostName,
sctpAssocLocalPort,
sctpAssocRemPort,
sctpAssocRemPrimaryAddressType,
sctpAssocRemPrimaryAddress,
sctpAssocHeartBeatInterval,
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sctpAssocState,
sctpAssocInStreams,
sctpAssocOutStreams,
sctpAssocMaxRetr,
sctpAssocPrimaryProcess,
sctpAssocStartTime,
sctpAssocDiscontinuityTime,
sctpAssocLocalAddressStartTime,
sctpAssocRemAddressActive,
sctpAssocRemAddressHBActive,
sctpAssocRemAddressRTO,
sctpAssocRemAddressMaxPathRtx,
sctpAssocRemAddressStartTime
}
STATUS current
DESCRIPTION
"The SCTP group of objects to manage per-association
parameters. These variables include all the SCTP basic
features."
::= { sctpGroups 3 }
sctpInverseGroup OBJECT-GROUP
OBJECTS {sctpLookupLocalPortStartTime,
sctpLookupRemPortStartTime,
sctpLookupRemHostNameStartTime,
sctpLookupRemPrimIPAddrStartTime,
sctpLookupRemIPAddrStartTime
}
STATUS current
DESCRIPTION
"Objects used in the inverse lookup table."
::= { sctpGroups 4 }
-- 4.1.2 Compliance Statements
--
-- MODULE COMPLIANCES
--
sctpCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
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"The compliance statement for SNMP entities which implement
SCTP. "
MODULE -- this module
MANDATORY-GROUPS { sctpLayerParamsGroup,
sctpPerAssocParamsGroup,
sctpStatsGroup
}
GROUP sctpInverseGroup
DESCRIPTION
"Objects used in inverse lookup tables. This should be
implemented for easier lookups in the association tables,
when it is required."
OBJECT sctpAssocRemPrimaryAddressType
SYNTAX InetAddressType { ipv4(1),
ipv6(2)
}
DESCRIPTION
"It is only required to have IPv4 and IPv6 addresses
without zone indices.
The address with zone indices is required if an
implementation can connect multiple zones."
OBJECT sctpAssocRemPrimaryAddress
SYNTAX InetAddress (SIZE(4|16))
DESCRIPTION
"An implementation is only required to support globally
unique IPv4 and globally unique IPv6 addresses."
OBJECT sctpAssocState
WRITE-SYNTAX INTEGER { deleteTCB(9) }
DESCRIPTION
"Only the deletedTCB(9) object's value can be written"
::= { sctpCompliances 1 }
END
5. Compiling Notes
After compiling the MIB the following warning can be got:
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@ index of row `sctpLookupRemPrimIPAddrEntry' can exceed OID size
limit by 141 subidentifier(s)
This comes from the fact that sctpAssocRemPrimaryAddress has the
default InetAddress size of (0..255) which exceeds OID size
limitations. Introducing a size restriction on
sctpAssocRemPrimaryAddress would make the warning go away � although
it would be one of those more arbitrary restrictions.
6. References
6.1 Normative References
[RFC2960] R. Stewart, Q. Xie, K. Morneault, C. Sharp, H. J.
Schwarzbauer, T. Taylor, I. Rytina, M. Kalla, L. Zhang, V.
Paxson, "Stream Control Transmission Protocol", October 2000.
[sctpcheck] R. Stewart, J. Stone, D. Otis, "SCTP Checksum Change",
January 18, 2002, draft-ietf-tsvwg-sctpcsum-07.txt, work in
progress
[sctpImplem] R. Stewart, L. Ong, I. Arias-Rodriguez, A. Caro, M.
Tuexen, "Stream Control Transmission Protocol (SCTP)
Implementers Guide", January 18, 2002, draft-ietf-tsvwg-
sctpimpguide-06.txt, work in progress
[RFC1905] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
"Protocol Operations for Version 2 of the Simple Network
Management Protocol (SNMPv2)", RFC 1905, January 1996.
[RFC1906] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
"Transport Mappings for Version 2 of the Simple Network
Management Protocol (SNMPv2)", RFC 1906, January 1996.
[RFC2571] D. Harrington, R. Presuhn, B. Wijnen, "An Architecture for
Describing SNMP Management Frameworks", RFC 2571, April 1999.
[RFC2572] Case, J., Harrington D., Presuhn R., and B. Wijnen,
"Message Processing and Dispatching for the Simple Network
Management Protocol (SNMP)", RFC 2572, April 1999.
[RFC2573] Levi, D., Meyer, P., and B. Stewart, "SNMPv3 Applications",
RFC 2573, April 1999.
[RFC2574] Blumenthal, U., and B. Wijnen, "User-based Security Model
(USM) for version 3 of the Simple Network Management Protocol
(SNMPv3)", RFC 2574, April 1999.
Pastor, Belinchon [Page 37]
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[RFC2575] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based
Access Control Model (VACM) for the Simple Network Management
Protocol (SNMP)", RFC 2575, April 1999.
[RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M., and S. Waldbusser, "Structure of Management
Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.
[RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M., and S. Waldbusser, "Textual Conventions for SMIv2",
STD 58, RFC 2579, April 1999.
[RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M., and S. Waldbusser, "Conformance Statements for
SMIv2", STD 58, RFC 2580, April 1999.
6.1 Informative References
[SecSNMP] Stallings, W., "SNMP3: A Security Enhancement for SNMP",
IEEE Communication Surveys, Forth quarter 1998, Vol. 1 No. 1.
[Cong] Jacobson, V., "Congestion Avoidance and Control", SIGCOMM
1988, Stanford, California.
[RFC1155] Rose, M., and K. McCloghrie, "Structure and Identification
of Management Information for TCP/IP-based Internets", STD 16,
RFC 1155, May 1990.
[RFC1157] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
Network Management Protocol", STD 15, RFC 1157, May 1990.
[RFC1212] Rose, M., and K. McCloghrie, "Concise MIB Definitions", STD
16, RFC 1212, March 1991.
[RFC1215] M. Rose, "A Convention for Defining Traps for use with the
SNMP", RFC 1215, March 1991.
[RFC1901] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
"Introduction to Community-based SNMPv2", RFC 1901, January
1996.
[RFC2012] K. McCloghrie, "SNMPv2 Management Information Base for the
Transmission Control Protocol using SMIv2", RFC 2012, November
1996.
[RFC2570] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction to Version 3 of the Internet-standard Network
Management Framework", RFC 2570, April 1999.
Pastor, Belinchon [Page 38]
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[RFC3291] M. Daniele, B. Haberman, S. Routhier, J. Schoenwaelder,
"Textual Conventions for Internet Network Addresses", May 2002.
[IPv6ARCH] Deering, S., Haberman, B., Jinmei, T., Nordmark, E., Onoe,
A. and B. Zill, "IPv6 Scoped Address Architecture", draft-
ietf-ipngwg-scoping-arch-04.txt, December 2002. Work in
progress.
[TADDRESS] M. Daniele , J. Schoenwaelder , "Textual Conventions for
Transport Addresses", draft-ietf-ops-taddress-mib-03.txt, July
22, 2002. Work in progress.
[TCPMIB] Bill Fenner, Keith McCloghrie, Rajiv Raghunarayan, Juergen
Schoenwalder, "Management Information Base for the Transmission
Control Protocol (TCP) ", draft-ietf-ipv6-rfc2012-update-00.txt
, June 2002. Work in progress.
[UDPMIB] Bill Fenner, "Management Information Base for User Datagram
Protocol (UDP draft-ietf-ipv6-rfc2013-update-00.txt, June 2002.
Work in progress.
7. Full Copyright Statement
Copyright (C) The Internet Society (2002). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
8. Security Consideration
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The deleteTCB management object, defined in this MIB, has a MAX-
ACCESS clause of read-write. This is because it allows operators to
tear down the associations. Such object may be considered sensitive
or vulnerable in some network environments. The support for SET
operations in a non-secure environment without proper protection can
have a negative effect on network operations.
It is thus important to control even GET access to these objects and
possibly to even encrypt the values of these object when sending them
over the network via SNMP. Not all versions of SNMP provide features
for such a secure environment.
SNMPv1 by itself is not a secure environment. Even if security
measures are taken (e.g., using IPSEC), there is no per-user control
as to who (once an IPSEC association is established between hosts) is
allowed to GET or SET the objects in this MIB
It is recommended that the implementers consider the security
features as provided by the SNMPv3 framework. Specifically, the use
of the User-based Security Model RFC 2574 [RFC2574] and the View-
based Access Control Model RFC 2575 [RFC2575] is recommended.
It is then a customer/user responsibility to ensure that the SNMP
entity giving access to an instance of this MIB, is properly
configured to give access to the objects only to those principals
(users) that have legitimate rights to indeed GET or SET
(change/create/delete) them.
8. Acknowledgments
The authors wish to thank Juergen Schoenwaelder, David Partain, Shawn
A. Routhier, Ed Yarwood, John Linton, Shyamal Prasad Juan-Francisco
Martin, Dave Thaler, and Bert Wijnen for their invaluable comments.
9. Authors' Addresses
Javier Pastor-Balbas Tel: +34-91-339-3819
Ericsson Espana S.A. eMail: [email protected]
Network Communication Services
Ombu 3, 4th floor
Madrid, 28045
Spain
Maria-Carmen Belinchon Tel: +34-91-339-3535
Ericsson Espana S.A. eMail: [email protected]
Network Communication Services
Ombu 3, 4th floor
Madrid, 28045
Spain
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10. Revision History
RFC-Editor to remove this section before publication as RFC.
10.1 Changes from <SCTP-MIB-predraft-01.txt>
o Open issues updated
o Section 2: Reference to RFC227x changed to RFC257x
o Section 4: Inside the sctpRtoAlgorithm definition has been put
"other" first rather than last. That way, it won't end up in the
middle of things when new enumerations are added later.
10.2 Changes from <draft-ietf-sigtran-sctp-mib-00.txt>
o Change of "Simple" word to "Stream" word in SCTP acronyms
o Version of the MIB based on SCTPv10
o Section 2: Update SNMP Framework to include the standard
explanation
o New Structure for the MIB:
sctp
\- sctpObjects
\- sctpScalars
\- sctpTables
\- sctpMIBConformance
o Section 4.1.2: Unit of Conformance updated (functional structure).
o MAX-ACCESS clauses reviewed
o The general statistics has been re-ordered, placed before the
tables.
o In SMIv2, indexes should be not-accessible (= the object type is a
column in a table used as index and may not be used as an operand in
any operation != SMIv1) (pp109-110 in [])
o IPv6 compatible:
- Change of Primary/Local/Remote addresses
- PENDING: check "MODULE-COMPLIANCE"
o Row Status included in AssocTable, AssocLocal and AssocRem to
create, modify and delete rows in the tables.
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o SCTP general statistics changed from Counter32 to Counter64 since
it supports more data changes.
o sctpCurrEstab ("State-related variables and statistics" section)
variable changed from Gauge32 to Counter32.
o sctpAssocRemAddressT1expired and sctpAssocRemAddressT2expired have
been removed from the remote table and added in the general
association data since they are variables per association (not per IP
address).
o sctpAssocDropDatag statistic has been removed from the general
association statistics since it had an ambiguous meaning.
o Explained the meaning of the unordered chunks (chunks in which the
U bit is set to 1) in sctpStatOutOfOrderSentChunks and
sctpStatOutOfOrderRecChunks.
o Added sctpChecksumErrorCounter to collect information about wrong
checksums received from the peer.
o Specify that sctpStatSentChunks and sctpStatRecChunks does not
contain retransmission chunks.
o Reword the Security Considerations chapter pointing out that IPsec
does not secure the network but it provides end-to-end security over
a network.
o sctpAssocRemAddressRtxChunks replaced as a variable per
association, meaning the number of chunks retransmited to the peer in
the current association.
o sctpHeartBeatMisses and sctpMaxRetr have been replaced from the
general SCTP statistics to the remote IP address table
(sctpHeartBeatMisses) and in the association table (sctpMaxRetr).
o Specify that the retransmissions in the general SCTP statistics
include control plus data chunks.
o Included heartbeat timer for remote IP address.
o Removed sctpAssocRemAddressHeartBeatMisses variable from the remote
IP address table.
o Removed sctpAssocRemAddressT3expired variable from the remote IP
address table.
o Updated variables to the new SCTP states defined in v10.
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10.3 Changes from <draft-ietf-sigtran-sctp-mib-01.txt>
o sctpRtoMin - stray "." outside the double-quotes in the DESCRIPTION
clause.
o sctpRtoMax - stray "." outside the double-quotes in the DESCRIPTION
clause.
o sctpAssocRemHostName - the type OCTECT STRING should be OCTET
STRING.
o sctpAssocRemPrimaryAddress - the DESCRIPTION clause is missing its
closing ouble-quote.
o sctpConformance - this is defined as { sctpMIB 2 }, then never
used; instead sctpMIBConformance (which is undefined) is used in the
definition of sctpMIBGroups and sctpMIBCompliances.
o Reworded the MIB organization
o Removed maximum number of concurrent associations
o In sctpMIBCompliance, removed a missing comma in MANDATORY-GROUPS.
o In sctpAssocTablesVariablesGroup and sctpAssocStatGroup, removed
extra commas at end of OBJECTS list.
o sctpAssocInStreams. ACCESS changed from read-create to read-only.
o sctpAssocRemAddressHeartBeatFlag and sctpAssocRemAddressHBTimer
changed from per remote IP address to per association.
o Comment on sctpAssocRemAddressHBTimer specifies now that the
manager can change it.
o ACCESS on sctpAssocRemAddressHBTimer changed from read-only to
read-write.
o ACCESS on sctpAssocRemAddressRetransCount changed from read-write
to read-only.
o Move sctpStatChecksumErrorCounter from general statistics to per
association.
o sctpMaxInStreams � It�s a sctp-user feature.
o sctpStatRetransChunks � It�s more useful to have this statistic in
a association basis
o sctpAssocRemAddressHeartBeatFlag and sctpAssocRemAddressHBTimer
have been created again instead of per association in order to follow
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the draft. If some implementations want to have the same value for
all the associations they have, they should set all the variables in
the different remote addresses to the same value.
10.3 Changes from <draft-ietf-sigtran-sctp-mib-02.txt>
o Deleting all the RowStatus Structure. Associated text rewording in
Tables section.
o Variable StartTime added in all the tables in order to specify the
creation time.
o Adding the Association reverse lookup table for easier management.
Associated text rewording in tables section.
o Remove sctpInitialT1 and sctpInitialT2, since these values are
equal to RTO.
o Change of the Heartbeats to a per-association basis
o Conformance up-to-date with all of this.
10.4 Changes from <draft-ietf-sigtran-sctp-mib-03.txt>
Main changes are due to the alignment with the TCP and UDP MIBs and
the inclusion of new lookup tables.
o Convert MIB to a read-only
o Counters ends with �s�
o Include �unknown� as an option for InetAddressType in conformance
o Terminology fix: CLOSED state, unordered chunks instead of out-of-
order, ..
o HBFlag changed to per remote address
o ChecksumErrors out of the AssocTable and hangs from Scalars
o Update Ports from Unsigned32 to InetPortNumber according to
RFC2851-update
o Rework inverse tables: five new lookup tables
o Remove INTEGER32 and change it to UNSIGNED32
o Replace Counter32 by Counter64
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o Split Sent and Received chunks per association into control,
ordered and unordered chunks
10.5 Changes from <draft-ietf-sigtran-sctp-mib-04.txt>
Changes due to the IETF-51 meeting and requests from the mailing
list.
o Typo errors
o Objects renumbering
o All counters to Counter32 to be backward compatible, not to waste
memory. Operators needing more than 32 bits will do it by
augmentations.
o Limit the number of IP address size when index
o Specify that a port number with value zero means unknown port
number according to the RFC2851-update
Changes due to the alignment with the RFC2851-update.
o Include clarification text of the IP address types supported in the
SCTP MIB. Chapter 3.1.2.1 (Association table)
o Remote Primary IP address: Addition of the ipv4z an ipv6z types for
non-globally IP addresses in which a scope identifier is needed.
Addition of the scope of ipv6 type. All of them according to the
RFC2851-update v04
o InetAddressType for local and remote IP addresses:
Limit UNKNOWN type only for unknown IP address format. Remove UNKNOWN
type for zero-length value in the InetAddress since it will be never
zero-length due to the size restriction (0..64)
Addition of the ipv4z an ipv6z types for non-globally IP addresses in
which a scope identifier is needed. Addition of the scope of ipv6
type. All of them according to the RFC2851-update v04
o Clarify when mapping DNS <-> IPaddress occurs with the remote IP
addresses
o Conformance:
Description: Specify that the SCTP MIB only need to support IPv4/IPv6
addresses without a zone index, unknown type and DNS names. Support
for IPv4/IPv6 addresses with zone indices is not required.
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InetAddressType for primary, local and remote IP addresses: Clarify
that the implementation is only required to support IPv4 and IPv6
address types without zone indices. Clarify also that UNKONWN type is
only used in case of local and remote addresses when invalid/unknown
IP address format
InetAddress value of primary, local and remote IP address: Removal of
the InetAddress values supported. Limitation of the supported IP
address types is already included in the InetAddressType
o Revision of the RFC2851-update v05. Changes in this draft does not
affect the SCTP MIB.
10.6 Changes from <draft-ietf-sigtran-sctp-mib-05.txt>
Changes due to the IPv6mib Design Team and the Sigtran mailing list.
o RFC2851-update v06 (changes) does not affect the SCTP MIB
o Typo errors
o Restructure the MIB organization (tree):
sctp
\- sctpParameters
\- sctpStats
o Modify conformance section according to the new MIB structure.
Statistics and lookup tables will be optional
o Clarify that the SCTP MIB is based on the TCP MIB update
(RFC2012update) and the TCs for Internet Network Addresses
(RFC2851update) � remove reference to RFC2452
o Replace "Sent" by "out" and "Received" by "in" in statistics
o Change the sctpAssocId to exclude the value zero. This allows other
MIBs to reference associations and to use the value 0 to indicate no
association
o Clarify sctpRemHostName to be zero-length value when no remote host
name was received at the initialization stage
o Limit the range of local and remote ports to (1..65535). Value 0
(unknown port number according to RFC2851-update) is not valid in
SCTP associations since there is no way of having an assoc with an
unknown local or remote port
o sctpAssocRemPrimaryAddressType and sctpAssocRemPrimaryAddress value
to be filled in with a zero length string until valid values are
received in the INIT or INIT ACK chunk
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o sctpAssocRemAddress and sctpAssocLocalAddressIP size upper limit
restriction to 36, as TCP MIB
o Change to Counter64 those counters which may wrap in less than an
hour
o Change sctpMaxAssoc variable to Integer32 since value �1 is allowed
for dynamic maximum number of associations
o Added a new column in the association table to give a pointer to
the primary system level process which holds the association
endpoint(sctpAssocPrimaryProcess)
o Specify in the security section, which object should be handled
carefully for security reasons
10.7 Changes from <draft-ietf-sigtran-sctp-mib-06.txt>
o Change of the variable structure to:
MIB-2 {1 3 6 1 2 2}
+--(xxx)sctpMIB
|
+--(1) sctpObjects
| |
| +--(1) sctpStats
| | |
| | +-- <scalars>
| |
| +--(2)sctpParameters
| | |
| | +-- <scalars>
| |
| +--(3) sctpAssocTable
| |
| +--(4) sctpAssocLocalAddressTable
| |
| +--(5) sctpAssocRemAddressTable
| |
| +--(6) sctpLookupLocalPortTable
| |
| +--(7) sctpLookupRemPortTable
| |
| +--(8) sctpLookupRemHostNameTable
| |
| +--(9) sctpLookupRemPrimIPAddrTable
| |
| +--(10) sctpLookupRemIPAddrTable
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|
|
+--(2)sctpConformance
|
+--(1) sctpCompliances
| |
| +-sctpCompliance
|
+--(2) sctpGroups
|
+--(1) sctpParametersGroup
|
+--(2) sctpStatGroup
|
+--(3) sctpAssocTableParametersGroup
|
+--(4) sctpInverseGroup
o New chapter for compilation notes created
o References ordered and updated
10.8 Changes from <draft-ietf-sigtran-sctp-mib-07.txt>
Changes due to the TSV WG, Sigtran technical advisor and O&M A-Ds
review.
o Typo errors
o Include a REVISION clause in the MODULE-IDENTITY macro
o Included a discontinuity timer object for sctpAssocTable. Such is
needed as per RFC2978, sect 7.1.6 and sect 7.1.10
o Define which objects allow to have a zero value and specify in
which cases.
o Eliminate zero value in indexes.
o sctpAssocRemHostName is OCTET STRING and it will be interpreted
under the DNS criteria.
o Eliminated redundant information from RFC 3291
o Only IPv4 and IPv6 addresses are expected
o Accept a SET for a value that is exactly the same as the
current value (a NO-OP). Comment added to show this.
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o Tables are created with values from INIT and INIT ACK SCTP
messages. All values are present when rows are created.
o Use of TruthValue for IP addresses state and Heart Beat.
o Reword of Lookup tables description
o Lookup Tables. Place Associatio State instead of Stamp Time object
o Removed �unknown� type from addresses. They will be always known,
otherwise row will not be created.
o Same restriction added for the the Address itself
o For the object sctpAssocState, formally indicated that only one
enum (deleteTCB) is writable
o SNMP boiler plate (Sect 2) changed.
o IPR section added as per RFC2026 Sect 10.
o Removed Tag value identifier as possible value inside AssocId
object.
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