RFC 1694 Network Working Group T. Brown Request for Comments: 1694 K. Tesink Obsoletes: RFC 1304 Editors Category: Standards Track Bell Communications Research August 1994 Definitions of Managed Objects for SMDS Interfaces using SMIv2 Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in TCP/IP-based internets. In particular, it defines objects for managing objects for SMDS access interfaces. This includes the following access protocols: SIP [13] SIP/DXI [18] and [20] SIP/FR [19] SIP/ATM [24] This memo replaces RFC 1304 [12], and defines a MIB module which is both compliant to the SNMPv2 SMI and semantically-identical to the existing RFC 1304-based definitions. This memo also assumes application of the MIB II Interfaces group as defined in [9]. Table of Contents 1. The SNMPv2 Network Management Framework ............... 2 2. Objects ............................................... 3 2.1 Format of Definitions ................................ 3 3. Overview .............................................. 4 3.1 SIP Level 3 .......................................... 5 4. Object Definitions .................................... 9 4.1 The SIP Level 3 Group ................................ 10 4.2 The SIP Level 2 Group ................................ 14 4.3 The SIP PLCP Group ................................... 17 Brown & Tesink [Page 1] RFC 1694 SMDS Interface Objects August 1994 4.3.1 The DS1 PLCP Group ................................. 17 4.3.2 The DS3 PLCP Group ................................. 19 4.4 The SMDS Applications Group .......................... 20 4.4.1 The IP over SMDS Group ............................. 21 4.5 The SMDS Carrier Selection Group ..................... 22 4.6 The SIP Error Log Group .............................. 23 4.7 The Data eXchange Interface Group .................... 27 4.8 Conformance Information .............................. 29 5. Acknowledgments ....................................... 32 6. References ............................................ 32 7. Security Considerations ............................... 34 8. Authors' Addresses .................................... 35 1. The SNMPv2 Network Management Framework The SNMPv2 Network Management Framework consists of four major components. They are: o RFC 1442 [1] which defines the SMI, the mechanisms used for describing and naming objects for the purpose of management. o STD 17, RFC 1213 [6] defines MIB-II, the core set of managed objects for the Internet suite of protocols. Reference [12] defines the evolution of the Interfaces Group of MIB II in terms of extensions and precise applications of the objects. o RFC 1445 [4] which defines the administrative and other architectural aspects of the framework. o RFC 1448 [5] which defines the protocol used for network access to managed objects. The Framework permits new objects to be defined for the purpose of experimentation and evaluation. This specification makes also use of: o RFC 1443 [2] which defines textual conventions for the specification of managed objects. o RFC 1444 [3] which defines conformance statements for the specification of managed objects. Brown & Tesink [Page 2] RFC 1694 SMDS Interface Objects August 1994 2. Objects Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the subset of Abstract Syntax Notation One (ASN.1) [7] defined in the SMI. In particular, each object has a name, a syntax, and an encoding. The name is an object identifier, an administratively assigned name, which specifies an object type. The object type together with an object instance serves to uniquely identify a specific instantiation of the object. For human convenience, we often use a textual string, termed the OBJECT DESCRIPTOR, to also refer to the object type. The syntax of an object type defines the abstract data structure corresponding to that object type. The ASN.1 language is used for this purpose. However, the SMI RFC 1442 purposely restricts the ASN.1 constructs which may be used. These restrictions are explicitly made for simplicity. The encoding of an object type is simply how that object type is represented using the object type's syntax. Implicitly tied to the notion of an object type's syntax and encoding is how the object type is represented when being transmitted on the network. The SMI specifies the use of the basic encoding rules of ASN.1 [8], subject to the additional requirements imposed by the SNMP. 2.1. Format of Definitions Section 4 contains contains the specification of all object types contained in this MIB module. The object types are defined using the conventions defined in the SMI, as amended by the extensions specified in the SNMPv2 SMI. Brown & Tesink [Page 3] RFC 1694 SMDS Interface Objects August 1994 3. Overview SMDS is a service that can be provided by numerous interface protocols as shown in the following figure: +-------------------+ +-------------------+ | SIP Level 3* [13] | | SIP Level 3* [13] | +-------------------+ +-------------------+ | SIP Level 2* [13] | | DXI Level 2* [20] | +-------------------+ +-------------------+ | SIP PLCP* [14] | | | +-------------------+ | DXI Level 1 [20] | | SIP Level 1 [14] | | | +-------------------+ +-------------------+ SIP based access DXI based access +-------------------+ +-------------------+ | SIP Level 3* [13] | | SIP Level 3* [13] | +-------------------+ +-------------------+ | ATM [21] | | Frame Relay [19] | +-------------------+ +-------------------+ | ATM PLCP [21] | | | +-------------------+ | Frame Relay [19] | | ATM Level 1 [21] | | Level 1 | +-------------------+ +-------------------+ ATM based access FR based access Brown & Tesink [Page 4] RFC 1694 SMDS Interface Objects August 1994 In the figure below, managed objects for the protocol levels marked with a (*) are defined in this memo. Additional managed objects that must be used to manage SMDS interfaces are defined in other MIB modules as indicated in the figure. +-------------------+ +-------------------+ | SIP Level 3* | | SIP Level 3* | +-------------------+ +-------------------+ | SIP Level 2* | | DXI Level 2* | +-------------------+ +-------------------+ | SIP PLCP* | | | +-------------------+ | DXI Level 1 | | SIP Level 1 | | | | [10] or [11] | | [10] | +-------------------+ +-------------------+ SIP based access DXI based access +-------------------+ +-------------------+ | SIP Level 3* | | SIP Level 3* | +-------------------+ +-------------------+ | ATM [22] | | Frame Relay [23] | +-------------------+ +-------------------+ | ATM PLCP/TC [22] | | | +-------------------+ | Frame Relay | | ATM Level 1 [10] | | Level 1 | | [11], or [25] | | [10] or [11] | +-------------------+ +-------------------+ ATM based access FR based access With the improved interpretation of the MIB II interfaces group [9], some objects can be represented by ifTable. This means that these objects have been deprecated from the MIB module defined in RFC 1304, and ifTable is used instead. No semantical changes have been made to these objects. Only the object identifiers and object descriptors have been changed to the objects defined in ifTable. Implementation experience has shown that the objects sipL3UnrecognizedIndividualDAs and sipL3UnrecognizedGAs were not supported. 3.1. SIP Level 3 Objects for SIP Level 3 apply to all methods to access SMDS shown in the figures above. With the improved interpretation of the MIB II interfaces group, most objects can be represented by ifTable. The appropriate mapping is defined below. Brown & Tesink [Page 5] RFC 1694 SMDS Interface Objects August 1994 This document does not specify objects for the management of subscription or configuration of Subscriber-Network Interfaces (SNIs). Those objects are defined in Definitions of Managed Objects for SMDS Subscription [17]. Bellcore requirements on these objects are specified in TR-TSV-001062 [16]. ifTable Object Use for ====================================================== ifIndex Interface index. ifDescr Interface description. For example, SIP Level 3 sublayer of a SNI. ifType Set to 31. ifMtu Set to 9232. ifSpeed Peak bandwidth in bits per second available for use as provided by the supporting Level 2 protocol. For example, 1.17 Mbps when using SIP based DS1 SNIs, and 1.536 Mbps when using DXI-based DS1 DXI-SNI. ifPhysAddress OCTET STRING of Size 8. Value is a 16-digit Binary Coded Decimal SMDS address that is assigned to this interface. ifAdminStatus The desired administrative status of the SMDS interface. ifOperStatus The current operational status of the SMDS interface. ifLastChange The elapsed time since the last re-initialization of the interface. The value of sysUpTime at the time the interface entered its current operational state. If the current state was entered prior to the last re-initialization of the local network management subsystem, then this object contains a zero value. ifInOctets Number of received octets at SIP Level 3. For SIP based SNIs, this is the number of sipL2ReceivedCounts multiplied by 44. Brown & Tesink [Page 6] RFC 1694 SMDS Interface Objects August 1994 ifInUcastPkts The total number of individually addressed SIP Level 3 PDUs received from the remote system across the SNI. The total includes only unerrored SIP Level 3 PDUs. [identical to RFC1304: sipL3ReceivedIndividualDAs] ifInDiscards The number of received SIP Level 3 PDUs discarded. For SMDS interfaces, this counter will always be zero. ifInErrors The total number of SIP Level 3 PDUs received from the remote system that were discovered to have errors (including protocol processing and bit errors but excluding addressing-related errors) and were discarded. Includes both group addressed SIP Level 3 PDUs and SIP Level 3 PDUs containing an individual destination address. [identical to RFC1304: sipL3Errors] ifInUnknownProtos The number of SIP Level 3 PDUs received from the remote system with a Source or Destination Address_Type subfields, (the four most significant bits of the 64 bit address field), not equal to the value 1100 or 1110. Also, an error is considered to have occurred if the Address_Type field for a Source Address is equal to 1110 (a group address). [identical to RFC1304: sipL3InvalidSMDSAddressTypes] ifOutOctets Number of received octets for transmission at SIP Level 3. For SIP based SNIs, this is the number of sipL2SentCounts multiplied by 44. ifOutUcastPkts The number of individually addressed SIP Level 3 PDUs that have been sent by this system across the interface. [identical to RFC1304: sipL3SentIndividualDAs] ifOutDiscards The number of SIP Level 3 PDUs discarded in the egress direction. For SMDS interfaces, this counter will always be zero. Brown & Tesink [Page 7] RFC 1694 SMDS Interface Objects August 1994 ifOutErrors The number of SIP Level 3 PDUs discarded in the egress direction, because of errors. For SMDS interfaces, this counter will always be zero. ifName The textual name of the interface. If not used, this variable contains a zero-length string. ifInMulticastPkts The total number of group addressed SIP Level 3 PDUs received from the remote system across the interface. The total includes only unerrored SIP Level 3 PDUs. [identical to RFC1304: sipL3ReceivedGAs] ifInBroadcastPkts This variable is not applicable for SMDS interfaces. Therefore, this counter is always zero. ifOutMulticastPkts The number of group addressed SIP Level 3 PDUs that have been sent by this system across the interface. [identical to RFC1304: sipL3SentGAs] ifOutBroadcastPkts This variable is not applicable for SMDS interfaces. Therefore, this counter is always zero. ifLinkUpDownTrapEnble The value of this object is disabled(2) for SIP Level 3 interfaces. ifHighSpeed Set to the user data rate of the interface in millions of bits per second. If the user data rate is less than 1 Mbps, then this value is zero. ifPromiscuousMode Set to false(2). ifConnectorPresent Set to false(2). Consult the Evolution of the Interfaces Group [9] for when to use the HC (High Capacity) counters (e.g., ifHCInOctets is a 64-bit counter). Brown & Tesink [Page 8] RFC 1694 SMDS Interface Objects August 1994 4. Object Definitions SIP-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, Counter32, Integer32, IpAddress FROM SNMPv2-SMI TimeStamp, TEXTUAL-CONVENTION FROM SNMPv2-TC MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF transmission, ifIndex, mib-2 FROM RFC1213-MIB; -- This is the MIB module for the SMDS Interface objects. sipMIB MODULE-IDENTITY LAST-UPDATED "9403311818Z" ORGANIZATION "IETF Interfaces Working Group" CONTACT-INFO " Tracy Brown Postal: Bell Communications Research 331 Newman Springs Road P.O. Box 7020 Red Bank, NJ 07701-7020 US Tel: +1 908 758-2107 Fax: +1 908 758-4177 E-mail: tacox@mail.bellcore.com Kaj Tesink Postal: Bell Communications Research 331 Newman Springs Road P.O. Box 7020 Red Bank, NJ 07701-7020 US Tel: +1 908 758 5254 Fax: +1 908 758 4177 E-mail: kaj@cc.bellcore.com." DESCRIPTION "The MIB module to describe SMDS interfaces objects." ::= { mib-2 36 } SMDSAddress ::= TEXTUAL-CONVENTION DISPLAY-HINT "1h:" STATUS current DESCRIPTION "The 60-bit SMDS address, Brown & Tesink [Page 9] RFC 1694 SMDS Interface Objects August 1994 preceded by 4 bits with the following values: 1100 when representing an individual address 1110 when representing a group address." SYNTAX OCTET STRING (SIZE (8)) IfIndex ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "The value of this object identifies the interface for which this entry contains management information. The value of this object for a particular interface has the same value as the ifIndex object, defined in RFC 1213, for the same interface." SYNTAX Integer32 sip OBJECT IDENTIFIER ::= { transmission 31 } sipMIBObjects OBJECT IDENTIFIER ::= { sipMIB 1 } -- The SIP Level 3 Group sipL3Table OBJECT-TYPE SYNTAX SEQUENCE OF SipL3Entry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains SIP L3 parameters and state variables, one entry per SIPL3 interface." ::= { sip 1 } sipL3Entry OBJECT-TYPE SYNTAX SipL3Entry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This list contains SIP L3 parameters and state variables." INDEX { sipL3Index } ::= { sipL3Table 1 } SipL3Entry ::= SEQUENCE { sipL3Index IfIndex, sipL3ReceivedIndividualDAs Counter32, sipL3ReceivedGAs Counter32, sipL3UnrecognizedIndividualDAs Counter32, sipL3UnrecognizedGAs Counter32, Brown & Tesink [Page 10] RFC 1694 SMDS Interface Objects August 1994 sipL3SentIndividualDAs Counter32, sipL3SentGAs Counter32, sipL3Errors Counter32, sipL3InvalidSMDSAddressTypes Counter32, sipL3VersionSupport Integer32 } sipL3Index OBJECT-TYPE SYNTAX IfIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The value of this object identifies the SIP L3 interface for which this entry contains management information. " ::= { sipL3Entry 1 } sipL3ReceivedIndividualDAs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated -- Moved to ifTable -- ifInUcastPkts defined in [9] must be used instead. DESCRIPTION "The total number of individually addressed SIP Level 3 PDUs received from the remote system across the SNI. The total includes only unerrored L3PDUs." ::= { sipL3Entry 2 } sipL3ReceivedGAs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated -- Moved to ifTable -- ifInMulticastPkts defined in [9] must be used instead. DESCRIPTION "The total number of group addressed SIP Level 3 PDUs received from the remote system across the SNI. The total includes only unerrored L3PDUs." ::= { sipL3Entry 3 } sipL3UnrecognizedIndividualDAs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of SIP Level 3 PDUs received from the Brown & Tesink [Page 11] RFC 1694 SMDS Interface Objects August 1994 remote system with invalid or unknown individual destination addresses (Destination Address Screening violations are not included). See SMDS Subscription MIB module." ::= { sipL3Entry 4 } sipL3UnrecognizedGAs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of SIP Level 3 PDUs received from the remote system with invalid or unknown group addresses. (Destination Address Screening violations are not included). See SMDS Subscription MIB module." ::= { sipL3Entry 5 } sipL3SentIndividualDAs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated -- Moved to ifTable -- ifOutUcastPkts defined in [9] must be used instead. DESCRIPTION "The number of individually addressed SIP Level 3 PDUs that have been sent by this system across the SNI." ::= { sipL3Entry 6 } sipL3SentGAs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated -- Moved to ifTable -- ifOutMulticastPkts defined in [9] must be used instead. DESCRIPTION "The number of group addressed SIP L3PDUs that have been sent by this system across the SNI." ::= { sipL3Entry 7 } -- The total number of SIP L3PDU errors can be calculated as -- (Syntactic errors + Semantic Service errors ) -- Syntactic errors include: -- sipL3Errors -- Latest occurrences of syntactic error types are logged in -- sipL3PDUErrorTable. -- Semantic Service errors include: Brown & Tesink [Page 12] RFC 1694 SMDS Interface Objects August 1994 -- sipL3UnrecognizedIndividualDAs -- sipL3UnrecognizedGAs -- sipL3InvalidSMDSAddressTypes -- Note that public networks supporting SMDS may discard -- SIP L3PDUs due to subscription violations. Related -- managed objects are defined in Definitions of Managed -- Objects for SMDS Subscription. sipL3Errors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated -- Moved to ifTable -- ifInErrors defined in [9] must be used instead. DESCRIPTION "The total number of SIP Level 3 PDUs received from the remote system that were discovered to have errors (including protocol processing and bit errors but excluding addressing-related errors) and were discarded. Includes both group addressed L3PDUs and L3PDUs containing an individual destination address." ::= { sipL3Entry 8 } sipL3InvalidSMDSAddressTypes OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated -- Moved to ifTable -- ifInUnknownProtos defined in [9] must be used instead. DESCRIPTION "The number of SIP Level 3 PDUs received from the remote system that had the Source or Destination Address_Type subfields, (the four most significant bits of the 64 bit address field), not equal to the value 1100 or 1110. Also, an error is considered to have occurred if the Address_Type field for a Source Address, the four most significant bits of the 64 bits, is equal to 1110 (a group address)." ::= { sipL3Entry 9 } sipL3VersionSupport OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "A value which indicates the version(s) of SIP Brown & Tesink [Page 13] RFC 1694 SMDS Interface Objects August 1994 that this interface supports. The value is a sum. This sum initially takes the value zero. For each version, V, that this interface supports, 2 raised to (V - 1) is added to the sum. For example, a port supporting versions 1 and 2 would have a value of (2^(1-1)+2^(2-1))=3. The sipL3VersionSupport is effectively a bit mask with Version 1 equal to the least significant bit (LSB)." ::= { sipL3Entry 10 } -- The SIP Level 2 Group sipL2Table OBJECT-TYPE SYNTAX SEQUENCE OF SipL2Entry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains SIP L2PDU parameters and state variables, one entry per SIP L2 interface." ::= { sip 2 } sipL2Entry OBJECT-TYPE SYNTAX SipL2Entry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This list contains SIP L2 parameters and state variables." INDEX { sipL2Index } ::= { sipL2Table 1 } SipL2Entry ::= SEQUENCE { sipL2Index IfIndex, sipL2ReceivedCounts Counter32, sipL2SentCounts Counter32, sipL2HcsOrCRCErrors Counter32, sipL2PayloadLengthErrors Counter32, sipL2SequenceNumberErrors Counter32, sipL2MidCurrentlyActiveErrors Counter32, sipL2BomOrSSMsMIDErrors Counter32, sipL2EomsMIDErrors Counter32 } sipL2Index OBJECT-TYPE SYNTAX IfIndex MAX-ACCESS read-only Brown & Tesink [Page 14] RFC 1694 SMDS Interface Objects August 1994 STATUS current DESCRIPTION "The value of this object identifies the SIP interface for which this entry contains management information." ::= { sipL2Entry 1 } sipL2ReceivedCounts OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of SIP Level 2 PDUs received from the remote system across the SNI. The total includes only unerrored L2PDUs." ::= { sipL2Entry 2 } sipL2SentCounts OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of SIP Level 2 PDUs that have been sent by this system across the SNI." ::= { sipL2Entry 3 } -- The following error types are counted, and -- preclude sipL2ReceivedCounts to be incremented: -- sipL2HcsOrCRCErrors -- sipL2PayloadLengthErrors -- sipL2SequenceNumberErrors -- sipL2BomOrSSMsMIDErrors -- sipL2EomsMIDErrors -- The receipt of SIP Level 2 PDUs which are BOMs and -- for with a MID that is already active will cause -- sipL2MidCurrentlyActiveErrors to increment. -- Any already accumulated (correct) segmentation -- units are discarded.The sipL2ReceivedCounts -- is incremented by 1. Thus, -- sipL2ReceivedCounts defines the number of -- correct SIP Level 2 PDUs delivered to the reassembly -- process. sipL2HcsOrCRCErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION Brown & Tesink [Page 15] RFC 1694 SMDS Interface Objects August 1994 "The number of received SIP Level 2 PDUs that were discovered to have either a Header Check Sequence error or a Payload CRC violation." ::= { sipL2Entry 4 } sipL2PayloadLengthErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of received SIP Level 2 PDUs that had Payload Length errors that fall in the following specifications: - SSM L2_PDU payload length field value less - than 28 octets or greater than 44 octets, - BOM or COM L2_PDU payload length field not - equal to 44 octets, - EOM L2_PDU payload length field value less - than 4 octets or greater than 44 octets." ::= { sipL2Entry 5 } sipL2SequenceNumberErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of received SIP Level 2 PDUs that had a sequence number within the L2PDU not equal to the expected sequence number of the SMDS SS receive process." ::= { sipL2Entry 6 } sipL2MidCurrentlyActiveErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of received SIP Level 2 PDUs that are BOMs for which an active receive process is already started." ::= { sipL2Entry 7 } sipL2BomOrSSMsMIDErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION Brown & Tesink [Page 16] RFC 1694 SMDS Interface Objects August 1994 "The number of received SIP Level 2 PDUs that are SSMs with a MID not equal to zero or are BOMs with MIDs equal to zero." ::= { sipL2Entry 8 } sipL2EomsMIDErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of received SIP Level 2 PDUs that are EOMs for which there is no active receive process for the MID (i.e., the receipt of an EOM which does not correspond to a BOM) OR the EOM has a MID equal to zero." ::= { sipL2Entry 9 } -- The SIP PLCP Group sipPLCP OBJECT IDENTIFIER ::= { sip 3 } -- The DS1 PLCP Group sipDS1PLCPTable OBJECT-TYPE SYNTAX SEQUENCE OF SipDS1PLCPEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains SIP DS1 PLCP parameters and state variables, one entry per SIP port." ::= { sipPLCP 1 } sipDS1PLCPEntry OBJECT-TYPE SYNTAX SipDS1PLCPEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This list contains SIP DS1 PLCP parameters and state variables." INDEX { sipDS1PLCPIndex } ::= { sipDS1PLCPTable 1 } SipDS1PLCPEntry ::= SEQUENCE { sipDS1PLCPIndex IfIndex, sipDS1PLCPSEFSs Counter32, sipDS1PLCPAlarmState INTEGER, Brown & Tesink [Page 17] RFC 1694 SMDS Interface Objects August 1994 sipDS1PLCPUASs Counter32 } sipDS1PLCPIndex OBJECT-TYPE SYNTAX IfIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The value of this object identifies the interface for which this entry contains management information. " ::= { sipDS1PLCPEntry 1 } sipDS1PLCPSEFSs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A DS1 Severely Errored Framing Second (SEFS) is a count of one-second intervals containing one or more SEF events. A Severely Errored Framing (SEF) event is declared when an error in the A1 octet and an error in the A2 octet of a framing octet pair (i.e., errors in both framing octets), or two consecutive invalid and/or nonsequential Path Overhead Identifier octets are detected." ::= { sipDS1PLCPEntry 2 } sipDS1PLCPAlarmState OBJECT-TYPE SYNTAX INTEGER { noAlarm (1), receivedFarEndAlarm (2), incomingLOF (3) } MAX-ACCESS read-only STATUS current DESCRIPTION "This variable indicates if there is an alarm present for the DS1 PLCP. The value receivedFarEndAlarm means that the DS1 PLCP has received an incoming Yellow Signal, the value incomingLOF means that the DS1 PLCP has declared a loss of frame (LOF) failure condition, and the value noAlarm means that there are no alarms present. See TR-TSV-000773 for a description of alarm states." ::= { sipDS1PLCPEntry 3 } Brown & Tesink [Page 18] RFC 1694 SMDS Interface Objects August 1994 sipDS1PLCPUASs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The counter associated with the number of Unavailable Seconds, as defined by TR-TSV-000773, encountered by the PLCP." ::= { sipDS1PLCPEntry 4 } -- The DS3 PLCP Group sipDS3PLCPTable OBJECT-TYPE SYNTAX SEQUENCE OF SipDS3PLCPEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains SIP DS3 PLCP parameters and state variables, one entry per SIP port." ::= { sipPLCP 2 } sipDS3PLCPEntry OBJECT-TYPE SYNTAX SipDS3PLCPEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This list contains SIP DS3 PLCP parameters and state variables." INDEX { sipDS3PLCPIndex } ::= { sipDS3PLCPTable 1 } SipDS3PLCPEntry ::= SEQUENCE { sipDS3PLCPIndex IfIndex, sipDS3PLCPSEFSs Counter32, sipDS3PLCPAlarmState INTEGER, sipDS3PLCPUASs Counter32 } sipDS3PLCPIndex OBJECT-TYPE SYNTAX IfIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The value of this object identifies the interface for which this entry contains management information. " ::= { sipDS3PLCPEntry 1 } Brown & Tesink [Page 19] RFC 1694 SMDS Interface Objects August 1994 sipDS3PLCPSEFSs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A DS3 Severely Errored Framing Second (SEFS) is a count of one-second intervals containing one or more SEF events. A Severely Errored Framing (SEF) event is declared when an error in the A1 octet and an error in the A2 octet of a framing octet pair (i.e., errors in both framing octets), or two consecutive invalid and/or nonsequential Path Overhead Identifier octets are detected." ::= { sipDS3PLCPEntry 2 } sipDS3PLCPAlarmState OBJECT-TYPE SYNTAX INTEGER { noAlarm (1), receivedFarEndAlarm (2), incomingLOF (3) } MAX-ACCESS read-only STATUS current DESCRIPTION "This variable indicates if there is an alarm present for the DS3 PLCP. The value receivedFarEndAlarm means that the DS3 PLCP has received an incoming Yellow Signal, the value incomingLOF means that the DS3 PLCP has declared a loss of frame (LOF) failure condition, and the value noAlarm means that there are no alarms present. See TR-TSV-000773 for a description of alarm states." ::= { sipDS3PLCPEntry 3 } sipDS3PLCPUASs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The counter associated with the number of Unavailable Seconds, as defined by TR-TSV-000773, encountered by the PLCP." ::= { sipDS3PLCPEntry 4 } -- The SMDS Applications group -- Applications that have been identified for this group are: Brown & Tesink [Page 20] RFC 1694 SMDS Interface Objects August 1994 -- * IP-over-SMDS (details are specified in RFC 1209) smdsApplications OBJECT IDENTIFIER ::= { sip 4 } ipOverSMDS OBJECT IDENTIFIER ::= { smdsApplications 1 } -- Although the objects in this group are read-only, at the -- agent's discretion they may be made read-write so that the -- management station, when appropriately authorized, may -- change the addressing information related to the -- configuration of a logical IP subnetwork implemented on -- top of SMDS. -- This table is necessary to support RFC1209 (IP-over-SMDS) -- and gives information on the Group Addresses and ARP -- Addresses used in the Logical IP subnetwork. -- One SMDS address may be associated with multiple IP -- addresses. One SNI may be associated with multiple LISs. ipOverSMDSTable OBJECT-TYPE SYNTAX SEQUENCE OF IpOverSMDSEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The table of addressing information relevant to this entity's IP addresses." ::= { ipOverSMDS 1 } ipOverSMDSEntry OBJECT-TYPE SYNTAX IpOverSMDSEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The addressing information for one of this entity's IP addresses." INDEX { ipOverSMDSIndex, ipOverSMDSAddress } ::= { ipOverSMDSTable 1 } IpOverSMDSEntry ::= SEQUENCE { ipOverSMDSIndex IfIndex, ipOverSMDSAddress IpAddress, ipOverSMDSHA SMDSAddress, ipOverSMDSLISGA SMDSAddress, ipOverSMDSARPReq SMDSAddress } ipOverSMDSIndex OBJECT-TYPE Brown & Tesink [Page 21] RFC 1694 SMDS Interface Objects August 1994 SYNTAX IfIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The value of this object identifies the interface for which this entry contains management information. " ::= { ipOverSMDSEntry 1 } ipOverSMDSAddress OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address to which this entry's addressing information pertains." ::= { ipOverSMDSEntry 2 } ipOverSMDSHA OBJECT-TYPE SYNTAX SMDSAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The SMDS Individual address of the IP station." ::= { ipOverSMDSEntry 3 } ipOverSMDSLISGA OBJECT-TYPE SYNTAX SMDSAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The SMDS Group Address that has been configured to identify the SMDS Subscriber-Network Interfaces (SNIs) of all members of the Logical IP Subnetwork (LIS) connected to the network supporting SMDS." ::= { ipOverSMDSEntry 4 } ipOverSMDSARPReq OBJECT-TYPE SYNTAX SMDSAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The SMDS address (individual or group) to which ARP Requests are to be sent." ::= { ipOverSMDSEntry 5 } -- The SMDS Carrier Selection group Brown & Tesink [Page 22] RFC 1694 SMDS Interface Objects August 1994 -- This group is used as a place holder -- for carrier selection objects. smdsCarrierSelection OBJECT IDENTIFIER ::= { sip 5 } -- The SIP Error Log sipErrorLog OBJECT IDENTIFIER ::= { sip 6 } sipL3PDUErrorTable OBJECT-TYPE SYNTAX SEQUENCE OF SipL3PDUErrorEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table that contains the latest occurrence of the following syntactical SIP L3PDU errors: - Destination Address Field Format Error, The following pertains to the 60 least significant bits of the 64 bit address field. The 60 bits contained in the address subfield can be used to represent addresses up to 15 decimal digits. Each decimal digit shall be encoded into four bits using Binary Coded Decimal (BCD), with the most significant digit occurring left-most. If not all 15 digits are required, then the remainder of this field shall be padded on the right with bits set to one. An error is considered to have occurred: a). if the first four bits of the address subfield are not BCD, OR b). if the first four bits of the address subfield are populated with the country code value 0001, AND the 40 bits which follow are not Binary Coded Decimal (BCD) encoded values of the 10 digit addresses, OR the remaining 16 least significant bits are not populated with 1's, OR c). if the address subfield is not correct according to another numbering plan which is dependent upon the carrier assigning the numbers and offering SMDS. - Source Address Field Format Error, The description of this parameter is the same as the description of the Destination Address Field Format Error. Brown & Tesink [Page 23] RFC 1694 SMDS Interface Objects August 1994 - Invalid BAsize Field Value, An error is considered to have occurred when the BAsize field of an SIP L3PDU contains a value less that 32, greater than 9220 octets without the CRC32 field present, greater than 9224 octets with the CRC32 field present, or not equal to a multiple of 4 octets, - Invalid Header Extension Length Field Value, An error is considered to have occurred when the Header Extension Length field value is not equal 3. - Invalid Header Extension - Element Length, An error is considered to have occurred when the Header Extension - Element Length is greater than 12. - Invalid Header Extension - Version Element Position, Length, or Value, An error is considered to have occurred when a Version element with Length=3, Type=0, and Value=1 does not appear first within the Header Extension, or an element Type=0 appears somewhere other than within the first three octets in the Header Extension. - Invalid Header Extension - Carrier Selection Element Position, Length, Value or Format, An error is considered to have occurred when a Carrier Selection element does not appear second within the Header Extension, if the Element Type does not equal 1, the Element Length does not equal 4, 6, or 8, the Element Value field is not four BCD encoded decimal digits used in specifying the Carrier Identification Code (CIC), or the identified CIC code is invalid. - Header Extension PAD Error An error is considered to have occurred when the Header Extension PAD is 9 octets in length, or if the Header Extension PAD is greater than zero Brown & Tesink [Page 24] RFC 1694 SMDS Interface Objects August 1994 octets in length and the Header Extension PAD does not follow all Header Extension elements or does not begin with at least one octet of all zeros. - BEtag Mismatch Error, An error is considered to have occurred when the Beginning-End Tags in the SIP L3PDU header and trailer are not equal. - BAsize Field not equal to Length Field Error, An error is considered to have occurred when the value of the BAsize Field does not equal the value of the Length Field. - Incorrect Length Error, and An error is considered to have occurred when the the Length field value is not equal to the portion of the SIP L3PDU which extends from the Destination Address field up to and including the CRC32 field (if present) or up to and including the PAD field (if the CRC32 field is not present). As an optional check, an error is considered to have occurred when the length of a partially received SIP L3PDU exceeds the BAsize value. - MRI Timeout Error. An error is considered to have occurred when the elapsed time between receipt of BOM and corresponding EOM exceeds the value of the MRI (Message Receive Interval) for a particular transport signal format. An entry is indexed by interface number and error type, and contains Source Address, Destination Address and a timestamp. All these errors are counted in the sipL3Errors counter. When sipL3PDUErrorTimeStamp is equal to zero, the SipL3PDUErrorEntry does not contain any valid information." ::= { sipErrorLog 1 } sipL3PDUErrorEntry OBJECT-TYPE SYNTAX SipL3PDUErrorEntry MAX-ACCESS not-accessible Brown & Tesink [Page 25] RFC 1694 SMDS Interface Objects August 1994 STATUS current DESCRIPTION "An entry in the service disagreement table." INDEX { sipL3PDUErrorIndex, sipL3PDUErrorType } ::= { sipL3PDUErrorTable 1 } SipL3PDUErrorEntry ::= SEQUENCE { sipL3PDUErrorIndex IfIndex, sipL3PDUErrorType INTEGER, sipL3PDUErrorSA SMDSAddress, sipL3PDUErrorDA SMDSAddress, sipL3PDUErrorTimeStamp TimeStamp } sipL3PDUErrorIndex OBJECT-TYPE SYNTAX IfIndex MAX-ACCESS read-only STATUS current DESCRIPTION "The value of this object identifies the interface for which this entry contains management information." ::= { sipL3PDUErrorEntry 1 } sipL3PDUErrorType OBJECT-TYPE SYNTAX INTEGER { erroredDAFieldFormat (1), erroredSAFieldFormat (2), invalidBAsizeFieldValue (3), invalidHdrExtLength (4), invalidHdrExtElementLength (5), invalidHdrExtVersionElementPositionLenthOrValue (6), invalidHdrExtCarSelectElementPositionLenghtValueOrFormat (7), hePADError (8), beTagMismatch (9), baSizeFieldNotEqualToLengthField (10), incorrectLength (11), mriTimeout (12) } MAX-ACCESS read-only STATUS current DESCRIPTION "The type of error." ::= { sipL3PDUErrorEntry 2 } sipL3PDUErrorSA OBJECT-TYPE SYNTAX SMDSAddress MAX-ACCESS read-only Brown & Tesink [Page 26] RFC 1694 SMDS Interface Objects August 1994 STATUS current DESCRIPTION "A rejected SMDS source address." ::= { sipL3PDUErrorEntry 3 } sipL3PDUErrorDA OBJECT-TYPE SYNTAX SMDSAddress MAX-ACCESS read-only STATUS current DESCRIPTION "A rejected SMDS destination address." ::= { sipL3PDUErrorEntry 4 } sipL3PDUErrorTimeStamp OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The timestamp for the service disagreement. The timestamp contains the value of sysUpTime at the latest occurrence of this type of service disagreement. See textual description under sipL3PDUErrorTable for boundary conditions." ::= { sipL3PDUErrorEntry 5 } -- The DXI Group sipDxiTable OBJECT-TYPE SYNTAX SEQUENCE OF SipDxiEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DXI table." ::= { sipMIBObjects 1 } sipDxiEntry OBJECT-TYPE SYNTAX SipDxiEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in the DXI table." INDEX { ifIndex } ::= { sipDxiTable 1 } SipDxiEntry ::= SEQUENCE { sipDxiCrc Brown & Tesink [Page 27] RFC 1694 SMDS Interface Objects August 1994 INTEGER, sipDxiOutDiscards Counter32, sipDxiInErrors Counter32, sipDxiInAborts Counter32, sipDxiInTestFrames Counter32, sipDxiOutTestFrames Counter32, sipDxiHbpNoAcks Counter32 } sipDxiCrc OBJECT-TYPE SYNTAX INTEGER { crc16(1), crc32(2) } MAX-ACCESS read-only STATUS current DESCRIPTION "The value of this object indicates the type of Frame Checksum used by DXI. Current choices include CCITT CRC16 or CRC32." ::= { sipDxiEntry 1 } sipDxiOutDiscards OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of outbound frames discarded because of congestion." ::= { sipDxiEntry 2 } sipDxiInErrors OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of inbound frames discarded because of errors such as frame checksum (CRC) violations, non-integral number of octets, address and control field violations, and frame size errors." Brown & Tesink [Page 28] RFC 1694 SMDS Interface Objects August 1994 ::= { sipDxiEntry 3 } sipDxiInAborts OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of inbound frames discarded because of an abort bit sequence (1111111) received before closing flag." ::= { sipDxiEntry 4 } sipDxiInTestFrames OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of unerrored, inbound Test frames received (generally as part of Heart Beat Poll procedure)." ::= { sipDxiEntry 5 } sipDxiOutTestFrames OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of unerrored, outbound Test frames sent (generally as part of Heart Beat Poll procedure)." ::= { sipDxiEntry 6 } sipDxiHbpNoAcks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of Heart Beat Poll (HBP) No Ack timeouts." ::= { sipDxiEntry 7 } -- conformance information smdsConformance OBJECT IDENTIFIER ::= { sipMIB 2 } Brown & Tesink [Page 29] RFC 1694 SMDS Interface Objects August 1994 smdsGroups OBJECT IDENTIFIER ::= { smdsConformance 1 } smdsCompliances OBJECT IDENTIFIER ::= { smdsConformance 2 } -- compliance statements smdsCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for SMDS interfaces." MODULE -- this module MANDATORY-GROUPS { sipLevel3Stuff } GROUP sipLevel2Stuff DESCRIPTION "This group is mandatory only for those interfaces (SNIs) which run SIP Level 2." GROUP sipDS1PLCPStuff DESCRIPTION "This group is mandatory only for those interfaces (SNIs) which run the DS1 PLCP." GROUP sipDS3PLCPStuff DESCRIPTION "This group is mandatory only for those interfaces (SNIs) which run the DS3 PLCP." GROUP sipIPApplicationsStuff DESCRIPTION "This group is mandatory only for interfaces operating IP over SMDS in accordance with RFC1209." GROUP sipDxiStuff DESCRIPTION "This group is mandatory only for those interfaces (DXI-SNI) which run the DXI protocol." ::= { smdsCompliances 1 } -- units of conformance sipLevel3Stuff OBJECT-GROUP OBJECTS { sipL3Index, sipL3VersionSupport, sipL3PDUErrorIndex, sipL3PDUErrorType, Brown & Tesink [Page 30] RFC 1694 SMDS Interface Objects August 1994 sipL3PDUErrorSA, sipL3PDUErrorDA, sipL3PDUErrorTimeStamp } STATUS current DESCRIPTION "A collection of objects providing information applicable to all SMDS interfaces." ::= { smdsGroups 1 } sipLevel2Stuff OBJECT-GROUP OBJECTS { sipL2Index, sipL2HcsOrCRCErrors, sipL2PayloadLengthErrors, sipL2SequenceNumberErrors, sipL2MidCurrentlyActiveErrors, sipL2BomOrSSMsMIDErrors, sipL2EomsMIDErrors } STATUS current DESCRIPTION "A collection of objects providing information specific to interfaces using the SIP Level 2." ::= { smdsGroups 2 } sipDS1PLCPStuff OBJECT-GROUP OBJECTS { sipDS1PLCPIndex, sipDS1PLCPSEFSs, sipDS1PLCPAlarmState, sipDS1PLCPUASs } STATUS current DESCRIPTION "A collection of objects providing information specific to interfaces using the DS1 PLCP." ::= { smdsGroups 3 } sipDS3PLCPStuff OBJECT-GROUP OBJECTS { sipDS3PLCPIndex, sipDS3PLCPSEFSs, sipDS3PLCPAlarmState, sipDS3PLCPUASs } STATUS current DESCRIPTION "A collection of objects providing information specific to interfaces using the DS3 PLCP." ::= { smdsGroups 4 } sipIPApplicationsStuff OBJECT-GROUP OBJECTS { ipOverSMDSIndex, ipOverSMDSAddress, ipOverSMDSHA, ipOverSMDSLISGA, ipOverSMDSARPReq } STATUS current DESCRIPTION "A collection of objects providing information for running IP over SMDS." ::= { smdsGroups 5 } Brown & Tesink [Page 31] RFC 1694 SMDS Interface Objects August 1994 sipDxiStuff OBJECT-GROUP OBJECTS { sipDxiCrc, sipDxiOutDiscards, sipDxiInErrors, sipDxiInAborts, sipDxiInTestFrames, sipDxiOutTestFrames, sipDxiHbpNoAcks } STATUS current DESCRIPTION "A collection of objects providing information specific to interfaces using the DXI protocol." ::= { smdsGroups 6 } END 5. Acknowledgments This specification is a product of the ifMIB Working Group. 6. References [1] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Structure of Management Information for version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1442, SNMP Research, Inc., Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon University, April 1993. [2] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Textual Conventions for version 2 of the the Simple Network Management Protocol (SNMPv2)", RFC 1443, SNMP Research, Inc., Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon University, April 1993. [3] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Conformance Statements for version 2 of the the Simple Network Management Protocol (SNMPv2)", RFC 1444, SNMP Research, Inc., Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon University, April 1993. [4] Galvin, J., and K. McCloghrie, "Administrative Model for version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1445, Trusted Information Systems, Hughes LAN Systems, April 1993. [5] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol Operations for version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1448, SNMP Research, Inc., Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon University, April 1993. Brown & Tesink [Page 32] RFC 1694 SMDS Interface Objects August 1994 [6] McCloghrie, K., and M. Rose, Editors, "Management Information Base for Network Management of TCP/IP-based internets: MIB-II", STD 17, RFC 1213, Hughes LAN Systems, Inc., Performance Systems International, March 1991. [7] Information processing systems - Open Systems Interconnection - Specification of Abstract Syntax Notation One (ASN.1), International Organization for Standardization. International Standard 8824, December 1987. [8] Information processing systems - Open Systems Interconnection - Specification of Basic Encoding Rules for Abstract Notation One (ASN.1), International Organization for Standardization. International Standard 8825, December 1987. [9] McCloghrie, K., and F. Kastenholz, "Evolution of Interfaces Group of MIB-II", RFC 1573, Hughes LAN Systems, FTP Software, January 1994. [10] Cox, T., and K. Tesink, Editors, "Definitions of Managed Objects for the DS3/E3 Interface Type", RFC 1407, Bellcore, January 1993. [11] Baker, F., and J. Watt, Editors, "Definitions of Managed Objects for the DS1/E1 Interface Type", RFC 1406, Advanced Computer Communications, Newbridge Networks Corporation, January 1993. [12] Cox, T., and K. Tesink, Editors, "Definition of Managed Objects for the SMDS Interface Type", RFC 1304, Bellcore, February 1992. [13] "Generic System Requirements in Support of Switched Multi-megabit Data Service", Bellcore Technical Reference, TR-TSV-000772, Issue 1, May 1991. [14] "Local Access System Generic Requirements, Objectives, and Interfaces in Support of Switched Multi-megabit Data Service", Bellcore Technical Reference, TR-TSV-000773, Issue 1, June 1990. [15] Piscitello, D., and J. Lawrence, Editors, The Transmission of IP Datagrams over the SMDS Service", RFC 1209, Bell Communications Research, March 1991. [16] "Generic Requirements For SMDS Customer Network Management Service", Bellcore TR-TSV-001062, Issue 1, March 1993, and Supplement 1, December 1993. [17] Cox, R., and K. Tesink, "Definitions of Managed Objects for SMDS Subscription", Version 2.1, Bellcore, August 1992. Brown & Tesink [Page 33] RFC 1694 SMDS Interface Objects August 1994 [18] Frame Based Interface Protocol for SMDS Networks - Data Exchange Interface / Subscriber Network Interface Revision 1.0 - SMDS Interest Group SIG-TS-005/1993, February 2, 1993. [19] Frame Based Interface Protocol for SMDS Networks - SIP Relay Interface Revision 1.0 - SMDS Interest Group SIG-TS-006/1993, February 2, 1993. [20] "Generic Requirements For Low Speed SMDS Access", Bellcore TR- TSV-001239, Issue 1, December 1993. [21] ATM Forum, "ATM User Network Interface Specification", Version 3.0, September 1993. [22] Ahmed, M., and K. Tesink, Editors, "Definitions of Managed Objects for ATM Management", RFC 1695, Bellcore, August 1994. [23] Brown, R., Editor, "Definitions of Managed Objects for Frame Relay Service", RFC 1604, Bellcore, March 1994. [24] Specification for Implementation of SMDS over an ATM-based Public UNI - Cedric Druce, Max Figueroa, Bellcore - SIG TWG-1993/043, SMDS Interest Group Technical Working Group, Work in Progress, August 24, 1993. [25] Brown, T. and K. Tesink, Editors), "Definitions of Managed Objects for the SONET Interface Type, RFC 1595, Bellcore, March 1994. 7. Security Considerations Security issues are not discussed in this memo. Brown & Tesink [Page 34] RFC 1694 SMDS Interface Objects August 1994 8. Authors' Addresses Tracy A. Brown Bell Communications Research 331 Newman Springs Road P.O. Box 7020 Red Bank, NJ 07701-7020 Phone: (908) 758-2107 EMail: tacox@mail.bellcore.com Kaj Tesink Bell Communications Research 331 Newman Springs Road P.O. Box 7020 Red Bank, NJ 07701-7020 Phone: (908) 758-5254 EMail: kaj@cc.bellcore.com Brown & Tesink [Page 35]