Network Working Group J. Pastor INTERNET-DRAFT M. Belinchon Expires: April 2002 Ericsson November, 2001 Stream Control Transmission Protocol Management Information Base using SMIv2 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. Pastor, Belinchon [Page 1] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 Open Issues - Remove this section. - Remove Revision History - Decide under which object identifier branch of the SNMP tree, SCTP will be placed (value obtained when submitted to the IETF editor). - Update references to [RFC2851-update] TABLE OF CONTENTS Open Issues.........................................................2 1. Introduction.....................................................3 1.1 Abbreviations...................................................3 2. The SNMP Framework...............................................3 3. Structure of the MIB.............................................4 3.1 Objects........................................................5 3.1.1 Scalars......................................................5 3.1.2 MIB Tables...................................................6 3.1.2.1 Association Table..........................................6 3.1.2.1.1 Local IP addresses Table..................................8 3.1.2.1.2 Remote IP addresses Table.................................8 3.2 Conformance.....................................................9 3.2.1 Groups........................................................9 3.2.2 Compliance...................................................10 4. Definitions.....................................................10 5. References.....................................................36 6. Security Consideration..........................................39 7. Acknowledgments.................................................39 8. Authors' Addresses..............................................39 9. Revision History................................................40 9.1 Changes from ........................40 9.2 Changes from ..............40 9.3 Changes from ..............42 9.3 Changes from ..............43 9.4 Changes from ..............43 9.5 Changes from ..............44 Pastor, Belinchon [Page 2] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 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 RFC 2012: "SNMPv2 Management Information Base for the Transmission Control Protocol using SMIv2" [RFC 2012] and "IP Version 6 Management Information Base for the Transmission Control Protocol" [RFC 2452]. Terms related to the SCTP architecture are explained in [1]. 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 RFC 2119 [RFC2119]. 1.1 Abbreviations DNS - Domain Name System IANA - Internet Assigned Numbers Authority ICANN - Internet Corporation for Assigned Names and Numbers 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 RFC 2271 [SNMPArch]. Pastor, Belinchon [Page 3] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 - 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 RFC 1155 [SMIv1], RFC 1212 [SNMPv1MIBDef] and RFC 1215 [SNMPv1Traps]. The second version, called SMIv2, is described in RFC 1902 [SMIv2], RFC 1903 [SNMPv2TC] and RFC 1904 [SNMPv2Conf]. - Message protocols for transferring management information. The first version of the SNMP message protocol is called SNMPv1 and described in RFC 1157 [SNMPv1]. A second version of the SNMP message protocol, which is not an Internet standards track protocol, is called SNMPv2c and described in RFC 1901 [SNMPv2c] and RFC 1906 [SNMPv2TM]. The third version of the message protocol is called SNMPv3 and described in RFC 1906 [SNMPv2TM], RFC 2272 [SNMPv3MP] and RFC 2574 [SNMPv3USM]. - Protocol operations for accessing management information. The first set of protocol operations and associated PDU formats is described in RFC 1157 [SNMPv1]. A second set of protocol operations and associated PDU formats is described in RFC 1905 [SNMPv2PO]. - A set of fundamental applications described in RFC 2273 [SNMPv3App] and the view-based access control mechanism described in RFC 2575 [SNMPv3VACM]. 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. Structure of the MIB The MIB is structured in the following way: sctpMib / \ sctpObjects sctpConformance / \ / \ sctpScalars sctpTables sctpGroups sctpCompliances Pastor, Belinchon [Page 4] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 | sctpCompliance where: - sctpObjects, all the SCTP objects are defined under this branch. - sctpScalars, containing only scalars values. It can be split into: - General variables, listing the main SCTP variables. - Statistics for traffic measurements. - SCTP state related statistics - other statistics - sctpTables, tables per association, per local and remote IP address and lookup tables for an easy search. - sctpConformance, for the Unit of Conformance. - sctpGroups, SCTP MIB variables have been grouped according to their function and the context they belong to (general variables, variables/statistics per association, variables per local IP address and variables/statistics per remote IP address). - sctpCompliances, Minimal list of objects in the SCTP MIB module that an agent developer must implement. 3.1 Objects 3.1.1 Scalars 3.1.1.1 Protocol General Variables The first section of the MIB contains the general variables of the SCTP protocol. Maximum, minimum, values by default and initial values are listed here. Based on the TCP MIB [RFC2012], SCTP RTO mechanism is defined in the same way. In SCTP protocol, only options 'other' and 'vanj' remain because SCTP protocol defines Van Jacobson's algorithm as the one to be used to calculate RTO. 'Other' is left for future use ('rsre' algorithm was eliminated because MIL-STD-1778 is Cancelled-No Superseding Document according to the Military Standard library and 'constant' option doesn't fulfill the SCTP protocol description). 3.1.1.2 Statistics for traffic Measurements Pastor, Belinchon [Page 5] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 Statistics included here are related to the whole SCTP layer. Statistics related to a specific association, or local/remote IP addresses are defined inside its concerned table. 3.1.1.2.1 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). 3.1.1.2.2 Other Statistics There is a statistic related to the SCTP packets, i.e., the number of out of the blue packets received by the local host. The remainder statistics are based on the data unit of SCTP: the chunk. In this way, the whole picture of the SCTP layer is covered. 3.1.2 MIB Tables 3.1.2.1 Association Table The part of the MIB to define each association is structured according to an expanded table. There is a main table (called association table, sctpAssocTable), indexed by the association identification. The association identification is a value to identify in a unique way an association. The MIB does not restrict which value must be written here. It can be the tag value, or the TCB creation time, or any other value the implementers decide. This main table contains common information for a given association and two other tables inside: local IP addresses table (sctpAssocLocalAddressTable), and remote IP addresses table (sctpAssocRemAddressTable). 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. sctpAssocTable +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocId (index) / ... | Pastor, Belinchon [Page 6] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocRemHostName \ ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocLocalSCTPPort / ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocRemSCTPPort \ ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocRemPrimaryAddressType / ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocRemPrimaryAddress \ ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocHeartBeatTimer / ...| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocState \ ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocInStreams / ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocOutStreams \ ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocMaxRetr / ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocT1expireds \ ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocT2expireds / ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocRtxChunks \ ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocStartTime / ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocLocalAddressTable | | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocLocalAddressIPType(index) \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocLocalAddressIP (index) \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocLocalAddressStartTime \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocRemAddressTable | | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocRemAddressIPType (index) \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocRemAddressIP (index) \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocRemAddressStatus \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocRemAddressHBFlag \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-++-+| | Pastor, Belinchon [Page 7] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 | | sctpAssocRemAddressRTO \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocRemAddressMaxPathRtx \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocRemAddressRtx \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | sctpAssocRemAddressStartTime \ ... | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-/+-+-+-+ | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Every entry is explained when defining the MIB. Note that the IP address indexing the tables is valid for IPv4, IPv6 and DNS. Therefore, IP address is defined by the Internet address type and the value of the IP address, according to the Textual Conventions for Internet Network Address [RFC2851-update]. The IP addresses that the MIB supports are defined in the [RFC2851- update]: global and non-global (either with a zone index or not) IPv4 addresses, global and non-global (either with a zone index or not) IPv6 addresses. 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, an entry has been created in the association table (sctpAssocRemHostName). When no DNS name is provided by the remote endpoint at initialization time, this value will be NULL. Otherwise, the received DNS name will be stored. It is NOT possible creating rows in any table (sctpAssocTable, sctpAssocLocalAddressTable, sctpRemAddressTable and Reverse Lookup tables). 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. 3.1.2.1.1 Local IP addresses Table Table for local IP addresses information. This table stores information related to the local IP address/-es reserved for the association. It is indexed by the local IP addresses (and the shared index sctpAssocId). 3.1.2.1.2 Remote IP addresses Table Pastor, Belinchon [Page 8] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 Table for remote IP addresses information. This table stores information related to the remote IP address/-es reserved for the association. It is indexed by the remote IP addresses (and the shared index sctpAssocId). 3.1.2.2 Reverse Lookup Tables There are five reverse lookup tables. These tables are optional 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. It is not possible to either create or delete rows in this table. All the lookup tables contains a timestamp to indicate when a row in the table was created. Several tables have been created for this purpose: - Local Port: It allows finding the associations in which the local endpoint is using the specified local port. - Remote Port: It allows finding the associations in which the remote endpoint is using the specified remote port. - Remote Host Name: It allows finding the associations that have defined the specified host name as remote endpoint. - Remote Primary IP Address: It allows finding the associations that have defined the specified remote IP address as primary. - Remote IP address: List of all the associations that have the specified IP address belonging to the set of remote addresses. As an example the picture below shows the table to look up by remote port. sctpLookupRemPortTable +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocRemSCTPPort (index) / ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpAssocId (index) \ ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sctpLookupRemPortStartTime / ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 3.2 Conformance 3.2.1 Groups This section includes all the variables defined in the MIB grouped by function (variables or statistics) and context (SCTP general parameters, association context, local IP address context or remote IP address context). Pastor, Belinchon [Page 9] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 Therefore the following groups have been created: - General variables for the SCTP layer. - General statistics for the states of the SCTP layer. - General statistics for the SCTP layer. - Variables and statistics per association, and variables per local and remote IP address. - Statistics per remote IP address. 3.2.2 Compliance Requirements of the SCTP MIB to be implemented. 4. Definitions SCTP-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, Unsigned32, Gauge32, Counter32 FROM SNMPv2-SMI -- RFC2578 TimeStamp FROM SNMPv2-TC -- RFC2579 MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF -- RFC2580 InetAddressType, InetAddress, InetPortNumber FROM INET-ADDRESS-MIB -- RFC2851-update ; -- RFC2851 is being update. Needed to update the import clause -- as well as other references to RFC2851 to include all the -- textual conventions defined in the new RFC2851-update sctpMIB MODULE-IDENTITY LAST-UPDATED "200110170000Z" -- 17th October 2001 ORGANIZATION "IETF SIGTRAN Working Group" CONTACT-INFO " Maria-Carmen Belinchon-Vergara Jose-Javier Pastor-Balbas Postal: Ericsson Espana S. A. Ombu street 3, 4th floor 28045 Madrid Spain Phones: +34 91 339 3535 +34 91 339 3819 Pastor, Belinchon [Page 10] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 Emails: Maria.C.Belinchon@ericsson.com J.Javier.Pastor@ericsson.com" DESCRIPTION "The MIB module for managing an SCTP implementation." REVISION "200110170000Z" -- 17th October 2001 DESCRIPTION "MIB module developed for the SIGTRAN IETF group. Based on SCTP, RFC2960" ::= { xxxx } -- IANA needs to choose this value -- when sent to the RFC editor -- Top-level structure of the MIB sctpObjects OBJECT IDENTIFIER ::= { sctpMIB 1 } sctpConformance OBJECT IDENTIFIER ::= { sctpMIB 2 } sctpScalars OBJECT IDENTIFIER ::= { sctpObjects 1 } sctpTables OBJECT IDENTIFIER ::= { sctpObjects 2 } -- 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." ::= { sctpScalars 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. Pastor, Belinchon [Page 11] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 Minimum recommended value is 1000 milliseconds. Some telephony applications could require less than 1 second." ::= { sctpScalars 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." ::= { sctpScalars 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." ::= { sctpScalars 4 } sctpMaxAssoc OBJECT-TYPE SYNTAX Unsigned32 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." ::= { sctpScalars 5 } sctpValCookieLife OBJECT-TYPE SYNTAX Unsigned32 UNITS "milliseconds" MAX-ACCESS read-only Pastor, Belinchon [Page 12] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 STATUS current DESCRIPTION "Valid cookie life in the 4-way start-up handshake procedure. Recommended value: 60000 milliseconds." ::= { sctpScalars 6 } sctpMaxInitRetr OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "The maximum number of retransmissions at the start-up phase (INIT and COOKIE ECHO chunks). Recommended value: 8 attempts." ::= { sctpScalars 7 } -- 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." ::= { sctpScalars 8 } 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." ::= { sctpScalars 9 } sctpPassiveEstabs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION Pastor, Belinchon [Page 13] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 "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." ::= { sctpScalars 10 } sctpAborteds 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 any state using the primitive 'ABORT': AnyState --Abort--> CLOSED. Ungraceful termination of the association." ::= { sctpScalars 11 } 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." ::= { sctpScalars 12 } -- OTHER LAYER STATISTICS sctpStatOutOfBlues 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." ::= { sctpScalars 13 } sctpStatChecksumErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only Pastor, Belinchon [Page 14] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 STATUS current DESCRIPTION "Number of SCTP packets received from the peers with an invalid checksum." ::= { sctpScalars 14 } sctpStatSentCtrlChunks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of SCTP control chunks sent to the peers (no retransmissions included)." ::= { sctpScalars 15 } sctpStatSentOrderChunks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of SCTP ordered data chunks sent to the peers (no retransmissions included)." ::= { sctpScalars 16 } sctpStatSentUnorderChunks OBJECT-TYPE SYNTAX Counter32 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)." ::= { sctpScalars 17 } sctpStatRecCtrlChunks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of SCTP control chunks received from the peers (no duplicated included)." ::= { sctpScalars 18 } sctpStatRecOrderChunks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only Pastor, Belinchon [Page 15] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 STATUS current DESCRIPTION "Number of SCTP ordered data chunks received from the peers (no duplicated included)." ::= { sctpScalars 19 } sctpStatRecUnorderChunks OBJECT-TYPE SYNTAX Counter32 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)." ::= { sctpScalars 20 } sctpStatFragmentedUsrMessages OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of user messages that have to be fragmented because of the MTU." ::= { sctpScalars 21 } sctpStatReassembledUsrMessages OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of user messages reassembled." ::= { sctpScalars 22 } sctpStatSentSCTPPacks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of SCTP packets received from the peers." ::= { sctpScalars 23 } Pastor, Belinchon [Page 16] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 sctpStatRecSCTPPacks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of SCTP packets received from the peers." ::= { sctpScalars 24 } -- SCTP ASSOCIATION DESCRIPTION PARAMETERS -- *************************************** -- the SCTP Association TABLE -- ************************** -- The SCTP association table contains information about each -- association that the local endpoint is taking part. sctpAssocTable OBJECT-TYPE SYNTAX SEQUENCE OF SctpAssocEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table containing SCTP association-specific information." ::= { sctpTables 1 } 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, sctpAssocLocalSCTPPort InetPortNumber, sctpAssocRemSCTPPort InetPortNumber, sctpAssocRemPrimaryAddressType InetAddressType, sctpAssocRemPrimaryAddress InetAddress, Pastor, Belinchon [Page 17] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 sctpAssocHeartBeatTimer Unsigned32, sctpAssocState INTEGER, sctpAssocInStreams Unsigned32, sctpAssocOutStreams Unsigned32, sctpAssocMaxRetr Unsigned32, sctpAssocT1expireds Counter32, -- Statistic sctpAssocT2expireds Counter32, -- Statistic sctpAssocRtxChunks Counter32, -- Statistic sctpAssocStartTime TimeStamp } sctpAssocId OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "Association Identification. Value identifying the association (typically the Initiate Verification Tag). If the selected AssocID is the Initiate Verification Tag, this value must not be zero." ::= { sctpAssocEntry 1 } sctpAssocRemHostName OBJECT-TYPE SYNTAX OCTET STRING (SIZE(0..255)) MAX-ACCESS read-only STATUS current DESCRIPTION "Peer's DNS name. 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 NULL value. Otherwise, the remote host name received at init time will be stored." ::= { sctpAssocEntry 2 } sctpAssocLocalSCTPPort OBJECT-TYPE SYNTAX InetPortNumber MAX-ACCESS read-only STATUS current DESCRIPTION "Local SCTP port number used for this association. A zero value means unknown according to the RFC-update." ::= { sctpAssocEntry 3 } sctpAssocRemSCTPPort OBJECT-TYPE Pastor, Belinchon [Page 18] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 SYNTAX InetPortNumber MAX-ACCESS read-only STATUS current DESCRIPTION "Remote SCTP port number used for this association. A zero value means unknown according to the RFC2851-update." ::= { sctpAssocEntry 4 } sctpAssocRemPrimaryAddressType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "Internet type of primary destination IP address. - unknown (0) An unknown address type. This value MUST be used if the value of the corresponding InetAddress object is a zero-length string. It may also be used to indicate an IP address different from IPv4 or IPv6. This value is used in this MIB for error conditions. - ipv4 (1): An IPv4 address as defined by the InetAddressIPv4 textual convention [RFC2851-update]. - ipv6 (2): An IPv6 address as defined by the InetAddressIPv6 textual convention [RFC2851-update]. It represents global IPv6 addresses and non-global IPv6 addresses in case where no zone index is needed. - ipv4z(3): A non-global IPv4 address including a zone index as defined by the InetAddressIPv4z textual convention [RFC2851-update]. - ipv6z(4): A non-global IPv6 address including a zone index as defined by the InetAddressIPv6z textual convention [RFC2851-update]. This value will be filled in after the INIT or INIT ACK chunks have been received (when the primary path is selected by SCTP)." ::= { sctpAssocEntry 5 } sctpAssocRemPrimaryAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS read-only STATUS current DESCRIPTION Pastor, Belinchon [Page 19] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 "Primary destination IP address. An InetAddress value is always interpreted within the context of an InetAddressType value. This value will be filled in after INIT or INIT ACK chunks have been received (when the primary path is selected by SCTP)." ::= { sctpAssocEntry 6 } sctpAssocHeartBeatTimer OBJECT-TYPE SYNTAX Unsigned32 UNITS "milliseconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The current heartbeat time-out. The recommended default value is 30000 milliseconds." ::= { sctpAssocEntry 7 } sctpAssocState OBJECT-TYPE 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. Accordingly, it is appropriate for an agent to return a 'badValue' response if a management station attempts to set this object to any other value. 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. As an implementation-specific option, an ABORT chunk may be sent from the managed node to the other SCTP endpoint." ::= { sctpAssocEntry 8 } Pastor, Belinchon [Page 20] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 sctpAssocInStreams OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "Inbound Streams according to the negotiation at association start up. This parameter has to be read-only by the manager." ::= { sctpAssocEntry 9 } sctpAssocOutStreams OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "Outbound Streams according to the negotiation at association start up. This parameter has to be read-only by the manager." ::= { 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." ::= { sctpAssocEntry 11 } -- Association Statistics sctpAssocT1expireds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of times that T1 timer expired (timer for sending either INIT or COOKIE-ECHO chunks and receiving an acknowledgment)." Pastor, Belinchon [Page 21] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 ::= { sctpAssocEntry 12 } sctpAssocT2expireds OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of times that T2-shutdown timer expired (shutdown timer)." ::= { sctpAssocEntry 13 } sctpAssocRtxChunks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of data chunks retransmitted to the peer in the current association." ::= { sctpAssocEntry 14 } sctpAssocStartTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of SysUpTime at the time that this row was created." ::= { sctpAssocEntry 15 } -- 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." Pastor, Belinchon [Page 22] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 ::= { sctpTables 2 } sctpAssocLocalAddressEntry OBJECT-TYPE SYNTAX SctpAssocLocalAddressEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Local information about the available addresses." INDEX { sctpAssocId, -- shared index sctpAssocLocalAddressIPType, sctpAssocLocalAddressIP } ::= { sctpAssocLocalAddressTable 1 } SctpAssocLocalAddressEntry ::= SEQUENCE { sctpAssocLocalAddressIPType InetAddressType, sctpAssocLocalAddressIP InetAddress, sctpAssocLocalAddressStartTime TimeStamp } sctpAssocLocalAddressIPType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS not-accessible STATUS current DESCRIPTION "Internet type of local IP address used for this association. - unknown (0) An unknown address type. This value MUST be used to indicate an IP address different from IPv4 or IPv6. This value is used in this MIB for error conditions. - ipv4 (1): An IPv4 address as defined by the InetAddressIPv4 textual convention [RFC2851-update]. - ipv6 (2): An IPv6 address as defined by the InetAddressIPv6 textual convention [RFC2851-update]. It represents global IPv6 addresses and non-global IPv6 addresses in case where no zone index is needed. - ipv4z(3): A non-global IPv4 address including a zone index as defined by the InetAddressIPv4z textual convention [RFC2851-update]. - ipv6z(4): A non-global IPv6 address including a zone index as defined by the InetAddressIPv6z textual convention [RFC2851-update]. " ::= { sctpAssocLocalAddressEntry 1 } Pastor, Belinchon [Page 23] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 sctpAssocLocalAddressIP OBJECT-TYPE SYNTAX InetAddress (SIZE(1..64)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The value of a local IP address available for this association. An InetAddress value is always interpreted within the context of an InetAddressType value. If SCTP is using a DNS name, the mapping to IP address/-es will be done at reception of INIT or INIT_ACK chunks. The sctpAssocRemAddressIP may not be empty due to the SIZE restriction." ::= { 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 } -- 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." ::= { sctpTables 3 } sctpAssocRemAddressEntry OBJECT-TYPE SYNTAX SctpAssocRemAddressEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION Pastor, Belinchon [Page 24] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 "Information about the most important variables for every remote IP address " INDEX { sctpAssocId, -- shared index sctpAssocRemAddressIPType, sctpAssocRemAddressIP } ::= { sctpAssocRemAddressTable 1 } SctpAssocRemAddressEntry ::= SEQUENCE { sctpAssocRemAddressIPType InetAddressType, sctpAssocRemAddressIP InetAddress, sctpAssocRemAddressStatus INTEGER, sctpAssocRemAddressHBFlag INTEGER, sctpAssocRemAddressRTO Unsigned32, sctpAssocRemAddressMaxPathRtx Unsigned32, sctpAssocRemAddressRtx Counter32, -- Statistic sctpAssocRemAddressStartTime TimeStamp } sctpAssocRemAddressIPType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS not-accessible STATUS current DESCRIPTION "Internet type of a remote IP address available for this association. - unknown (0) An unknown address type. This value MUST be used to indicate an IP address different from IPv4 or IPv6. This value is used in this MIB for error conditions. - ipv4 (1): An IPv4 address as defined by the InetAddressIPv4 textual convention [RFC2851-update]. - ipv6 (2): An IPv6 address as defined by the InetAddressIPv6 textual convention [RFC2851-update]. It represents global IPv6 addresses and non-global IPv6 addresses in case where no zone index is needed. - ipv4z(3): A non-global IPv4 address including a zone index as defined by the InetAddressIPv4z textual convention [RFC2851-update]. - ipv6z(4): A non-global IPv6 address including a zone index as defined by the InetAddressIPv6z textual convention [RFC2851-update]. " ::= { sctpAssocRemAddressEntry 1 } Pastor, Belinchon [Page 25] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 sctpAssocRemAddressIP OBJECT-TYPE SYNTAX InetAddress (SIZE(1..64)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The value of a remote IP address available for this association. An InetAddress value is always interpreted within the context of an InetAddressType value. If SCTP is using a DNS name, the mapping to IP address/-es will be done at reception of INIT or INIT_ACK chunks The sctpAssocRemAddressIP may not be empty due to the SIZE restriction." ::= { sctpAssocRemAddressEntry 2 } sctpAssocRemAddressStatus OBJECT-TYPE SYNTAX INTEGER { active(0), inactive(1) } MAX-ACCESS read-only STATUS current DESCRIPTION "The current status of the remote transport address, according to [SCTP]. Active means that the threshold of no answer received from this IP address has not been reached. Inactive means that either no heartbeat was received from this address, or any other message, reaching the threshold defined by the protocol." ::= { sctpAssocRemAddressEntry 3 } sctpAssocRemAddressHBFlag OBJECT-TYPE SYNTAX INTEGER { active(0), inactive(1) } MAX-ACCESS read-only STATUS current DESCRIPTION "The optional Heartbeat associated to one destination transport address could be active or not (value equal to 0 or 1, respectively). Pastor, Belinchon [Page 26] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 An active destination transport address is the one considered available by a peer endpoint for receiving SCTP packets, as it is described in [sctp]." ::= { sctpAssocRemAddressEntry 4 } 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 [sctp]. 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 [sctp]." ::= { 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 } Pastor, Belinchon [Page 27] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 -- 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" ::= { sctpTables 4 } 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 { sctpAssocLocalSCTPPort, 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 Pastor, Belinchon [Page 28] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 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" ::= { sctpTables 5 } 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 { sctpAssocRemSCTPPort, 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 Pastor, Belinchon [Page 29] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 "With the use of this table, a list of associations with that particular host can be got" ::= { sctpTables 6 } 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 " ::= { sctpTables 7 } Pastor, Belinchon [Page 30] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 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" ::= { sctpTables 8 } sctpLookupRemIPAddrEntry OBJECT-TYPE SYNTAX SctpLookupRemIPAddrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION Pastor, Belinchon [Page 31] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 "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 { sctpAssocRemAddressIPType, sctpAssocRemAddressIP, 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 sctpGroups OBJECT IDENTIFIER ::= { sctpConformance 1 } sctpCompliances OBJECT IDENTIFIER ::= { sctpConformance 2 } -- 4.1.1 Units of conformance -- -- MODULE GROUPS -- sctpGeneralVariablesGroup OBJECT-GROUP OBJECTS { sctpRtoAlgorithm, sctpRtoMin, sctpRtoMax, sctpRtoInitial, sctpMaxAssoc, sctpValCookieLife, sctpMaxInitRetr } Pastor, Belinchon [Page 32] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 STATUS current DESCRIPTION "Common parameters for all the associations. They can usually be referred as configuration parameters" ::= { sctpGroups 1 } sctpStateStatGroup OBJECT-GROUP OBJECTS {sctpCurrEstab, sctpActiveEstabs, sctpPassiveEstabs, sctpAborteds, sctpShutdowns } STATUS current DESCRIPTION "The sctp group of objects to control state changes in the SCTP protocol local layer. They include the data for all the associations." ::= { sctpGroups 2 } sctpOtherStatGroup OBJECT-GROUP OBJECTS {sctpStatOutOfBlues, sctpStatChecksumErrors, sctpStatSentCtrlChunks, sctpStatSentOrderChunks, sctpStatSentUnorderChunks, sctpStatRecCtrlChunks, sctpStatRecOrderChunks, sctpStatRecUnorderChunks, sctpStatFragmentedUsrMessages, sctpStatReassembledUsrMessages, sctpStatSentSCTPPacks, sctpStatRecSCTPPacks } STATUS current DESCRIPTION "The sctp group of objects providing for management of SCTP most common statistics for the local SCTP layer." ::= { sctpGroups 3 } sctpAssocTablesVariablesGroup OBJECT-GROUP OBJECTS {sctpAssocRemHostName, sctpAssocLocalSCTPPort, Pastor, Belinchon [Page 33] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 sctpAssocRemSCTPPort, sctpAssocRemPrimaryAddressType, sctpAssocRemPrimaryAddress, sctpAssocHeartBeatTimer, sctpAssocState, sctpAssocInStreams, sctpAssocOutStreams, sctpAssocMaxRetr, sctpAssocT1expireds, sctpAssocT2expireds, sctpAssocRtxChunks, sctpAssocStartTime, sctpAssocLocalAddressStartTime, sctpAssocRemAddressStatus, sctpAssocRemAddressHBFlag, sctpAssocRemAddressRTO, sctpAssocRemAddressMaxPathRtx, sctpAssocRemAddressStartTime } STATUS current DESCRIPTION "The sctp group of objects to manage specific local and remote SCTP variables (local and remote tables). These variables include all the SCTP basic features." ::= { sctpGroups 4 } sctpAssocStatGroup OBJECT-GROUP OBJECTS {sctpAssocRemAddressRtx } STATUS current DESCRIPTION "The sctp group of objects to manage SCTP statistics related to the remote endpoint." ::= { sctpGroups 5 } sctpInverseGroup OBJECT-GROUP OBJECTS {sctpLookupLocalPortStartTime, sctpLookupRemPortStartTime, sctpLookupRemHostNameStartTime, sctpLookupRemPrimIPAddrStartTime, sctpLookupRemIPAddrStartTime } STATUS current DESCRIPTION "Objects used in the inverse lookup table." Pastor, Belinchon [Page 34] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 ::= { sctpGroups 6 } -- 4.1.2 Compliance Statements -- -- MODULE COMPLIANCES -- sctpCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for SNMPv3 entities which implement SCTP. The SCTP MIB specifies in this compliant implementation that only need to support IPv4/IPv6 addresses without a zone index, unknown type and DNS names. Support for IPv4/IPv6 addresses without zone indices is not required." MODULE -- this module MANDATORY-GROUPS { sctpGeneralVariablesGroup, sctpAssocTablesVariablesGroup } GROUP sctpStateStatGroup DESCRIPTION "The sctp group of objects to control state changes in the SCTP protocol." GROUP sctpOtherStatGroup DESCRIPTION "The sctp group of objects providing for management of SCTP general statistics." GROUP sctpAssocStatGroup DESCRIPTION "The sctp group of objects to manage SCTP statistics related to the remote endpoint." GROUP sctpInverseGroup DESCRIPTION "Objects used in inverse lookup tables. This should be implemented for easier lookups in the association tables." Pastor, Belinchon [Page 35] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 OBJECT sctpAssocRemPrimaryAddressType SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2), dns(16) } DESCRIPTION "It is only required to have IPv4 and IPv6 addresses without zone indices. Unknown values must also be supported in case the IP address has a zero string length or an invalid/unknown format." OBJECT sctpAssocLocalAddressIPType SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2), dns(16) } DESCRIPTION "It is only required to have IPv4 and IPv6 addresses without zone indices. Unknown values must also be supported in case the IP address has an invalid/unknown format " OBJECT sctpAssocRemAddressIPType SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2), dns(16) } DESCRIPTION "It is only required to have IPv4 and IPv6 addresses without zone indices. Unknown values must also be supported in case the IP address has an invalid/unknown format " ::= { sctpCompliances 1 } END 5. References [sctp] 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", RFC 2960, October 2000. Pastor, Belinchon [Page 36] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 [MIBMPLS] Cucchiara et al. "Definnitions of Managed Objects for the Multiprotocol Label Switching, Label Distribution Protocol (LDP)", Internet Draf , January 2000. [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. [RFC2012] K. McCloghrie, "SNMPv2 Management Information Base for the Transmission Control Protocol using SMIv2", RFC 2012, November 1996. [RFC2571] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing SNMP Management Frameworks", RFC 2571, April 1999. [RFC1155] Rose, M., and K. McCloghrie, "Structure and Identification of Management Information for TCP/IP-based Internets", STD 16, RFC 1155, 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. [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. [RFC1157] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple Network Management Protocol", STD 15, RFC 1157, May 1990. [RFC1901] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Introduction to Community-based SNMPv2", RFC 1901, January 1996. Pastor, Belinchon [Page 37] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 [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. [RFC2452] M. Daniele, "IP Version 6 Management Information Base for the Transmission Control Protocol", RFC 2452, December 1998 [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. [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. [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. [RFC2573] Levi, D., Meyer, P., and B. Stewart, "SNMPv3 Applications", RFC 2573, April 1999. [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. [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. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, Harvard University, March 1997 [RFC2851-update] M. Daniele, B. Haberman, S. Routhier, J. Schoenwaelder, "Textual Conventions for Internet Network Addresses", draft-ietf-ops-rfc2851-update-05.txt, October 31, 2001. Work in progress. [TADDRESS] M. Daniele , J. Schoenwaelder , "Textual Conventions for Transport Addresses", draft-ietf-ops-taddress-mib-01.txt, September 17, 2001. Work in progress. [TCPMIB] Management Information Base for the Transmission Control Protocol (TCP), draft-ietf-ipngwg-rfc2012-update-00.txt, July 2001. Work in progress. [UDPMIB] Bill Fenner, Brian Haberman, Keith McCloghrie, Juergen Schoenwalder, Dave Thaler, "Management Information Base for User Datagram Protocol (UDP)", draft-ietf-ipngwg-rfc2013- update-00.txt, July 2001. Work in progress. Pastor, Belinchon [Page 38] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 [IPv6ARCH] Deering, S., Haberman, B., Jinmei, T., Nordmark, E., Onoe, A. and B. Zill, "IPv6 Scoped Address Architecture", draft- ietf-ipngwg-scoping-arch-02.txt, September 2001. Work in progress. 6. Security Consideration There are a number of management objects defined in this MIB that have a MAX-ACCESS clause of read-write and/or read-create. Such objects 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. 7. Acknowledgments The authors wish to thank David Partain, Ed Yarwood and Shyamal Prasad for their invaluable comments. 8. Authors' Addresses Javier Pastor-Balbas Tel: +34-91-339-3819 Ericsson Espana S.A. eMail: J.Javier.Pastor@ericsson.com Network Communication Services Ombu 3, 4th floor Pastor, Belinchon [Page 39] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 Madrid, 28045 Spain Maria-Carmen Belinchon Tel: +34-91-339-3535 Ericsson Espana S.A. eMail: Maria.C.Belinchon@ericsson.com Network Communication Services Ombu 3, 4th floor Madrid, 28045 Spain 9. Revision History 9.1 Changes from 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. 9.2 Changes from 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: sctpMIB \- sctpObjects \- sctpScalars \- sctpTables \- sctpConformance 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 []) Pastor, Belinchon [Page 40] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 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. 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. Pastor, Belinchon [Page 41] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 o Removed sctpAssocRemAddressT3expired variable from the remote IP address table. o Updated variables to the new SCTP states defined in v10. 9.3 Changes from 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. Pastor, Belinchon [Page 42] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 o sctpMaxInStreams “ ItËs a sctp-user feature. o sctpStatRetransChunks “ ItËs 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 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. 9.3 Changes from 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. 9.4 Changes from 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 Ÿs÷ o Include Ÿunknown÷ 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 Pastor, Belinchon [Page 43] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 o Rework inverse tables: five new lookup tables o Remove INTEGER32 and change it to UNSIGNED32 o Replace Counter32 by Counter64 o Split Sent and Received chunks per association into control, ordered and unordered chunks 9.5 Changes from 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 Pastor, Belinchon [Page 44] INTERNET-DRAFT SCTP MIB using SMIv2 October, 2001 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. 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. Pastor, Belinchon [Page 45]