Network Working Group M. Greene Request for Comments: 2320 Xedia Corp. Category: Standards Track J. Luciani Bay Networks, Inc. K. White IBM Corp. T. Kuo Bay Networks, Inc. April 1998
Definitions of Managed Objects for Classical IP and ARP Over ATM Using SMIv2 (IPOA-MIB)
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.
Copyright Notice
Copyright (C) The Internet Society (1998). All Rights Reserved.
Abstract
The purpose of this memo is to define the Management Information Base (MIB) for supporting Classical IP and ARP over ATM as specified in Classical IP and ARP over ATM, refer to reference [3]. Support of an ATM interface by an IP layer will require implementation of objects from several Management Information Bases (MIBs) as well as their enhancement in order to enable usage of ATM transports. It is the intent of this MIB to fully adhere to all prerequisite MIBs unless explicitly stated. Deviations will be documented in corresponding conformance statements. The specification of this MIB will utilize the Structure of Management Information (SMI) for Version 2 of the Simple Network Management Protocol Version (refer to RFC 1902, reference [1]).
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This document is a product of the Internetworking Over NBMA Working Group. Its purpose is to define a MIB module for extending the traditional MIBs supported by a TCP/IP implementation to support Classical IP and ARP over ATM.
Many MIB related RFCs and Internet Drafts have been considered in the development of this document. The ones that are considered central to the extensions defined by this document are:
o RFC 2011 - SNMPv2 Management Information Base for the Internet Protocol using SMIv2 [9]. The IP over ATM (IPOA) MIB provides extensions to the IP Group for handling IP over ATM flows. A basic understanding of the IP Group is essential for understanding this document.
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o RFC 2233 - The Interfaces Group MIB (IF-MIB) using SMIv2, reference [2]. This document is important since it provides several very useful enhancements over the interface group defined in RFC 1213 (reference [5]) that aid in handling ATM related interfaces.
o RFC 1695 - Definitions of Managed Objects for ATM Management [4] (ATM-MIB). Support of this MIB is REQUIRED for implementing the layers between AAL5 and ATM. The contents of this MIB will not explicitly be addressed here. The ATM-MIB provides a basis for managing ATM interface layering and management of:
The ATM Forum UNI ILMI MIB is specified by the ATM Forum in various versions of the UNI specification. The ILMI MIBs being defined are not supported via SNMP agents but via SNMP requests sent over an ATM network to an ATM entity encapsulated in an AAL5 header. Support of the ILMI MIB(s) is considered out of the scope of this document.
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, reference [10].
The SNMPv2 Network Management Framework consists of seven major components. They are:
o RFC 1902 [1] which defines the SMI, the mechanisms used for describing and naming objects for the purpose of management.
o RFC 1903 [6] defines textual conventions for SNMPv2.
o RFC 1904 [8] defines conformance statements for SNMPv2.
o RFC 1905 [7] defines transport mappings for SNMPv2.
o RFC 1906 [12] defines the protocol operations used for network access to managed objects.
o RFC 1907 [13] defines the Management Information Base for SNMPv2.
o RFC 1908 [14] specifies coexistence between SNMPv1 and SNMPv2.
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The Framework permits new objects to be defined for the purpose of experimentation and evaluation.
This memo specifies a MIB module that is compliant to the SNMPv2 SMI. A semantically identical MIB conforming to the SNMPv1 SMI can be produced through the appropriate translation.
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) defined in the SMI. In particular, each object type is named by an OBJECT IDENTIFIER, an administratively assigned name. 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 descriptor, to refer to the object type.
The Classical ARP and IP over ATM (IPOA) MIB structure is split into three components:
o Basic Support MIB Definitions o Client Supported MIB Definitions o Server Supported MIB Definitions
All IP and ARP over ATM entities, both clients and ATMARP Servers, are REQUIRED to support the MIB definitions in the Basic Support MIB Definitions section. Clients need to additionally support the MIB definitions outlined in the Client specific section and ATMARP Servers MUST additionally support the ATMARP Server specific MIB definitions.
Implementation of the Definitions of Managed Objects for ATM Management [4] defines the modeling of the various layers within an ATM Interface. This modeling is assumed as a prerequisite for the IPOA-MIB. The IPOA-MIB makes no assumptions on how this layering is actually implemented within a system. Several of the MIB tables defined by the IPOA-MIB, like the base TCP/IP MIBs, require that an ifIndex exist that points to an ATM Interface. Refer to the ATM-MIB [4] for the definition of ATM Interface layering.
The use of an IP over ATM Virtual Interface layer is NOT explicitly REQUIRED by the IPOA-MIB. The use of virtual layers above an ATM-MIB defined interface layer is not absolutely necessary for modeling the
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attachment of IP to an ATM network. The IPOA-MIB refers to use of a generic ifIndex object, whose value SHOULD reflect that of some specific ATM related interface as determined by an implementation. It is up to the implementers of this MIB to determine their own ATM interface layering (assuming compliance with the IF-MIB and the ATM- MIB).
The Internet Assigned Numbers Authority (IANA) ifType ipOverAtm(114) was created for use by systems that require a virtual IP over ATM interface layer. The IF-MIB's ifStackTable SHOULD be used to show the relationship between virtual IP over ATM interfaces and the actual ATM physical interface layers. The current set of ifType values can be accessed via the IANA homepage at: "http://www.iana.org/iana/".
Basic support that MUST be implemented by both Clients and ATMARP Servers consists of:
o ATM Logical IP Subnet (LIS) Table o ATM Logical IP Subnet Interface Mapping Table o ATMARP Remote Server Table o ATM VC Table o ATM Config PVC Table o Notifications
The ATM Logical IP Subnet (LIS) Table defines the subnets that this system is a member of for purposes of reaching destinations over an ATM transport. The LIS table is indexed by the subnet address (ipoaLisSubnetAddr) and not ifIndex. The ipoaLisIfMappingTable described in the next section provides the mapping between Logical IP Subnets and the interface layer. It is possible that the same LIS can be reached via different ATM interfaces.
The ipAddrTable and the ipoaClientTable provides the mapping from a local IP address to an ATM interface. One or more ipAddrTable entries can point to the same ipoaLisEntry. An ipAddrEntry's ipAdEntAddr ANDed with its ipAdEntNetMask SHOULD equal an ipoaLisEntry's ipoaLisSubnetAddr. Given that an interface can be multi-homed, each local IP address associated with an interface requires an entry in the ipAddrTable. Each ipAddrTable entry for a local IP address associated with an ATM interface SHOULD map to an entry in the ipoaLisTable.
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The bulk of the objects in an ipoaLisEntry exists to control ATMARP for a particular LIS. In a PVC only environment it is implementation dependent as to whether this table should be supported:
The value of an ipoaLisMaxCalls object defines the maximum number of VCs that can be established simultaneously per LIS. The value of an ipoaLisDefaultPeakCellRate object defines the best effort default peak cell rate in both the forward and backward directions when establishing VCCs (Virtual Channel Connections). Refer to RFC 1755, ATM Signaling Support for IP over ATM (reference [11]), for a definition of the use of this object's value.
The ipAddrTable's ipAdEntReasmMaxSize is the "The size of the largest IP datagram which this entity can re-assemble from incoming IP fragmented datagrams received on this interface" and is different from the ipoaLisTable's ipoaLisDefaultMtu with is the default MTU used within an LIS. Note that this is the default MTU, not the actual MTU (which is represented as ipoaVcNegotiatedMtu in the ipoaVcTable).
The ipoaLisRowStatus object enables entries in the ipoaLisTable to be created or deleted via SNMP. Creation of an ipoaLisTable entry results in the addition of a corresponding ipAddrTable entry and an ipoaLisIfMappingTable entry. Creation of multiple ipAddrTable entries and ipoaLisIfMappingTable entries for the same LIS is not addressed by this document. When ipoaLisRowStatus is changed from active(1) to notInService(2) or from active(1) to destroy(6), this has the side- effect of removing all entries from the ipNetToMediaTable that are associated with this LIS (in other words, it flushes the entity's ATMARP cache). It also removes the ipoaVcTable entries that were associated with those ipNetToMediaTable entries. Destroying the row removes the corresponding entries in the ipoaArpSrvrTable, ipoaArpClientTable, ipoaLisIfMappingTable, and the ipoaArpRemoteSrvrTable.
Entries in both the ipNetToMediaTable and the ipoaVcTable that are associated with an ipoaConfigPvcEntry are not affected by changes to ipoaLisRowStatus.
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3.1.2. ATM Logical IP Subnet Interface Mapping Table
The ipoaLisIfMappingTable maps a LIS to all ATM interfaces from which it is configured to be supported. Each entry in the ipoaLisIfMappingTable SHOULD map to an ipAddrTable entry. It is also possible for a system, most commonly a switch, to have multiple LISs associated with the same ATM interface.
Entries in the ipoaArpRemoteSrvrTable exists to locally configure the remote ATMARP Servers that exist on a per LIS and interface basis. Classical IP and ARP over ATM [3] requires that at least one ATMARP Server be configured per LIS where SVC traffic is intended. PVC usage doesn't require use of ATMARP. No ipoaArpRemoteSrvrTable entries SHOULD be configured for a LIS where only PVCs will be used. An entry in the ipoaArpRemoteSrvrTable is indexed by the subnet address of the LIS (ipoaLisSubnetAddr), the ATM address of the remote ATMARP Server (ipoaArpRemoteSrvrAtmAddr) and an interface ifIndex (ipoaArpRemoteSrvrIfIndex) value.
The object ipoaArpRemoteSrvrIpAddr in an ipoaArpRemoteSrvrEntry is set with the IP Address of the Remote ATMARP Server when a VC to the Remote ATMARP Server is established. A value of 0.0.0.0 SHOULD be used when the IP address of the Remote ATMARP Server is not known. Once ipoaArpRemoteSrvrIpAddr is set then the ipoaVcTable can be searched using ipoaArpRemoteSrvrIfIndex and ipoaArpRemoteSrvrIpAddr to find the VC in use to the Remote ATMARP Server.
ipoaArpRemoteSrvrIfIndex is defined to have the textual convention of InterfaceIndexOrZero. Adding ipoaArpRemoteSrvrIfIndex to the index clause allows a system to have a VC to a ATMARP Remote Server on a per LIS and interface basis. An entry in this table SHOULD exist for each interface on a per LIS basis. Each interface would then have a separate VC to the Remote ATMARP Server for ATMARP purposes.
An implementation that wants to use a single VC MAY use an ipoaArpRemoteSrvrIfIndex value of 0 when configuring an ipoaArpRemoteSrvrEntry for the associating LIS. If ipoaArpRemoteSrvrIfIndex is 0 then an implementation dependent method MAY be used for finding the VPI and VCI of the VC in use to the Remote ATMARP Server. For example, search the ipoaVcTable for a match between ipNetToMediaNetAddress and ipoaArpRemoteSrvrIpAddr from an ipoaArpRemoteSrvrEntry, ignoring ipNetToMediaIfIndex. Since a single VC is being used the first match SHOULD correspond to the correct VC.
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If a PVC is intended to be used to communicate with a remote ATMARP Server then the ipoaConfigPvcTable MUST be used to create and activate the PVC prior to activating a ipoaArpRemoteSrvrEntry.
The object ipoaArpRemoteSrvrRowStatus allows for row creation and deletion of entries in the ipoaArpRemoteSrvrTable. The objects ipoaArpRemoteSrvrAdminStatus and ipoaArpRemoteSrvrOperStatus exist to control and reflect the operational use of a Remote ATMARP Server defined by an ipoaArpRemoteSrvrEntry. The object ipoaArpRemoteSrvrOperStatus SHOULD have a value of up(1) when an SVC has been established to the Remote ATMARP Server or if using a PVC when the InATMARP reply with the IP Address of the Remote ATMARP Server has been received. The value of down(2) SHOULD be used to indicate that a VC to the Remote ATMARP Server doesn't exist.
An entry in the ipoaVcTable SHOULD have at least one corresponding ipNetToMediaTable entry. Both tables use the ipNetToMediaTable's indexes ipNetToMediaIfIndex and ipNetToMediaNetAddress. The ipoaVcTable has the additional indexes ipoaVcVpi and ipoaVcVci. An ipoaVcEntry exists for every VC per ATM interface per destination IP address. Refer to the following diagram that illustrates the relationship between ipoaVcTable and the ipNetToMediaTable:
ipoaVcType indicates if the entry is for an SVC or a PVC. An ipoaVcEntry, corresponding to an PVC, is created automatically when an ipoaConfigPvcEntry is created and the IP Address at the end of the PVC is discovered. The associating ipNetToMediaTable entry would have its ipNetToMediaType set to static(4). ipNetToMediaTable entries created during ATMARP processing have a ipNetToMediaType of dynamic(3). The process to locally configuring an ipNetToMediaTable entry and an ipoaVcTable entry for an SVC without using ATMARP is not within the scope of this document.
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The objects ipoaVcVpi and ipoaVcVci are defined to have a MAX-ACCESS of not-accessible since they are only used for purposes of indexing an entry in the ipoaVcTable.
An entry in the ipoaVcTable is created after the InATMARP reply is successfully received for an ipoaConfigPvcEntry during its activation. InATMARP should return the IP Address of the other end of the PVC in order to have the needed indexes to create an ipNetToMediaEntry and an ipoaVcEntry.
The corresponding ARP Cache entry SHOULD be deleted whenever a PVC becomes unusable.
A Network Management Station wanting to create a PVC at a particular system for use as an IP transport would:
o use the ATM-MIB, reference [4], to create the PVC o use the ipoaConfigPvcTable in the IPOA-MIB to configure the PVC for use by IP
Refer to the following diagram that illustrates the relationship between the ipoaVcTable and the ipoaConfigPvcTable:
When the ipoaVcEntry is created its ipoaVcType will be set to pvc(1), its ipoaVcNegotiatedEncapsType set to llcSnap(1), and its ipoaVcNegotiatedMtu set to 9180 octets by default. Classical IP and ARP over ATM [3] allows use of other MTU values for PVCs but considers the selection of a value other than 9180 to be out of scope. ipoaConfigPvcDefaultMtu can be used to configure the MTU to be used for the PVC. Both ends MUST have the same value configured. The associating ipNetToMediaTable entry would have its ipNetToMediaType set to static(4).
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Changing ipoaConfigPvcRowStatus from active(1) to notInService(2) or from active(1) to destroy(6) has the side-effect of removing the corresponding ipNetToMediaTable, ipoaVcTable, and ipoaConfigPvcTable entries.
An entry in the ipoaArpClientTable SHOULD have a corresponding ipAddrTable entry where both are indexed by the same ipAdEntAddr value. Refer to the following diagram that illustrates the relationship between ipoaArpClientTable and ipAddrTable entries:
Both tables have the same index, ipAdEntAddr. The ipAddrTable's ipAdEntNetMask when ANDed with its corresponding ipAdEntAddr yield the subnet of the LIS which can be used as an index into the ipoaLisTable (ipoaLisSubnetAddr). The ipAddrTable's ipAdEntIfIndex points to an interface ifTable entry via an ifIndex value. The attachment point for IP into an ATM network is via an ATM interface's ifIndex. Each ipoaArpClientEntry MUST point to an ATM interface via its corresponding ipAddrEntry.
ipoaArpClientAtmAddr is the local ATM address associated with the corresponding ATM ifTable entry. ipoaArpClientSrvrInUse is the ATM address of the ATMARP Server being used for a particular client. If SVCs are not being used then the value of this object is a zero-length OCTET STRING.
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It is sometimes possible for a system to have multiple IP addresses configured within the same IP subnet. The indexing of this table would seem to preclude that. However, it is possible to have additional entries in the ipAddrTable with the same ifIndex and with the same subnet address. The mechanism for adding these multiple entries to the ipAddrTable (which is read-only) is beyond the scope of this document.
The counter object ipoaArpClientInArpInvalidInReqs is "The number of times that this client detected an invalid InATMARP request." This object SHOULD be incremented when processing fails for an InATMARP request (e.g., for incorrect InATMARP request structure fields). The object ipoaArpClientInArpInvalidOutReqs is defined as "The number of times that this client did not receive an InATMARP reply." This is different from ipoaArpClientArpNoSrvrResps which counts the number of times no response was received from an ATMARP request.
InATMARP retransmission processing is not controlled by objects in the ipoaLisTable. In general, the ipoaLisTable objects relate to ATMARP Server processing. Configuration of InATMARP retransmission processing is considered to be implementation dependent and not defined by the IPOA-MIB.
Implementations SHOULD use local policy for defining both InATMARP timeout and retry count values. This policy would be expected to differ for sending an InATMARP Request over a PVC as opposed to an SVC. For transmission of an InATMARP Request over a SVC a timeout of 60 seconds with a retry count of 3 is suggested. InATMARP transmission over a PVC should differ since its retry limit may need to be infinite in order to ensure that InATMARP Request processing eventually occurs.
This table defines the list of ATMARP Servers within a LIS. Each entry of the table defines each ATMARP Server's ATM address, the LIS it is a member of, and various InATMARP and ATMARP statistics.
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An entry in this table provides information about an ATMARP Server within a LIS and is indexed by ipAdEntAddr (a local IP Address from an IP Address Table entry) and ipoaArpSrvrAddr (an ATM Address associated with the ATMARP Server).
Entries MAY be created by a management application using the ipoaArpSrvrRowStatus object. Entries in this table MAY also be created by the system and not by a management application, for example via ILMI.
Entries in this table MAY be deleted by setting the ipoaArpSrvrRowStatus object to destroy(6). This includes entries that were added by the system and not by a management application.
On a host that supports multiple ATMARP Servers where the local IP address being associated with each ATMARP Server is the same (for example a non-multihomed host), the ATM Address (ipoaArpSrvrAddr) uniquely identifies a particular ATMARP Server. On a host supporting multiple ATMARP Servers having a single ATM Interface with a single ATM Address, the ipAdEntAddr MUST be used to uniquely identify an entry in the ipoaArpSrvrTable.
The indexing of the ipoaArpSrvrTable does not allow entries with the same or no local IP Address (ipAdEntAddr) and the same ATM Address (ipoaArpSrvrAddr) to exist. The values of the index elements when combined to index a row must be unique.
An ATMARP Server MUST support the following notifications:
o ipoaDuplicateIpAddress o ipoaLisCreate o ipoaLisDelete
Generation of ipoaLisCreate and ipoaLisDelete notifications is controlled by the ipoaLisTrapEnable object. These notifications indicate when an ipoaLisEntry is either created or deleted. The purpose of these notifications is to enable Network Management Applications to dynamically discover the existence of ATMARP Server LIS participation in order to eventually determine LIS composition via subsequent SNMP queries. It is permissible for an ATM client-only system to support the ipoaLisTrapEnable object and generate ipoaLisCreate and ipoaLisDelete notifications.
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IMPORTS MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, transmission, Integer32, IpAddress, Counter32, Gauge32 FROM SNMPv2-SMI TEXTUAL-CONVENTION, RowStatus FROM SNMPv2-TC MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP FROM SNMPv2-CONF ipNetToMediaNetAddress, ipNetToMediaIfIndex, ipNetToMediaPhysAddress, ipAdEntAddr FROM IP-MIB
-- The following textual conventions are defined locally within -- this MIB module. They have been prefixed with 'Ipoa' to -- distinguish them from their counterparts in the ATM-TC-MIB. -- This was done so that the IPOA-MIB could be advanced as -- a standards-based MIB without waiting for the ATM-TC-MIB.
-- AtmConnKind, AtmAddr -- FROM ATM-TC-MIB
InterfaceIndex, InterfaceIndexOrZero FROM IF-MIB ;
ipoaMIB MODULE-IDENTITY LAST-UPDATED "9802090000Z" -- February 9, 1998 ORGANIZATION "IETF Internetworking Over NBMA Working Group (ion)" CONTACT-INFO "Maria Greene (greene@xedia.com) Xedia Corp.
Jim Luciani (jluciani@BayNetworks.com) Bay Networks
Kenneth White (kennethw@vnet.ibm.com) IBM Corp.
Ted Kuo (tkuo@eos.ncsu.edu) Bay Networks" DESCRIPTION "This module defines a portion of the management
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information base (MIB) for managing Classical IP and ARP over ATM entities." ::= { transmission 46 }
-- Textual Conventions
IpoaEncapsType ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "The encapsulation type used on a VC." SYNTAX INTEGER { llcSnap(1), vcMuxed(2), other(3) }
IpoaVpiInteger ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "An integer large enough to contain the value of a VPI." SYNTAX Integer32 (0..255)
IpoaVciInteger ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "An integer large enough to contain the value of a VCI." SYNTAX Integer32 (0..65535)
IpoaAtmAddr ::= TEXTUAL-CONVENTION DISPLAY-HINT "1x" STATUS current DESCRIPTION "The ATM address used by the network entity. The semantics are implied by the length. The address types are:
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
Address lengths other than defined in this definition imply address types defined elsewhere. Note: The E.164 address is encoded in BCD format." SYNTAX OCTET STRING (SIZE(0..40))
IpoaAtmConnKind ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "The use of call control. The use is as follows: pvc(1) Virtual link of a PVC. Should not be used in a PVC/SVC (i.e., SPVC) crossconnect. svcIncoming(2) Virtual link established after a received signaling request to setup an SVC. svcOutgoing(3) Virtual link established after a transmitted or forwarded signaling request to setup an SVC. spvcInitiator(4) Virtual link at the PVC side of an SVC/PVC crossconnect, where the switch is the initiator of the SPVC setup. spvcTarget(5) Virtual link at the PVC side of an SVC/PVC crossconnect, where the switch is the target of the SPVC setup.
An spvcInitiator is always cross-connected to an svcOutgoing, and an spvcTarget is always cross-connected to an svcIncoming." SYNTAX INTEGER { pvc(1), svcIncoming(2), svcOutgoing(3), spvcInitiator(4), spvcTarget(5) }
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
-- MIB Objects
ipoaLisTrapEnable OBJECT-TYPE SYNTAX INTEGER { enabled(1), disabled(2) } MAX-ACCESS read-write STATUS current DESCRIPTION "Indicates whether ipoaLisCreate and ipoaLisDelete traps should be generated by this system.
By default, this object should have the value enabled(1) for systems where ATMARP Servers are present and disabled(2) on systems where only clients reside." ::= { ipoaObjects 1 }
-- The ATM Logical IP Subnet (LIS) Table
ipoaLisTable OBJECT-TYPE SYNTAX SEQUENCE OF IpoaLisEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "There is one entry in this table for every Logical IP Subnet (LIS) of which this system is a member.
The bulk of the objects in an ipoaLisEntry exists to control ATMARP for a particular LIS. In a PVC only environment it is implementation dependent as to whether this table should be supported." ::= { ipoaObjects 2 }
ipoaLisEntry OBJECT-TYPE SYNTAX IpoaLisEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a single LIS of which this system is a member.
Membership in a LIS is independent of the actual ATM interfaces being used. The ipoaLisTable defines all LISs that a system is a member of. The ipAddrTable and the ipoaClientTable provides the mapping from local IP address to ATM interface. The ipoaLisIfMappingTable provides the mappings between Logical IP Subnets and interfaces.
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The ipoaLisTable is indexed by ipoaLisSubnetAddr (IP subnet address). An entry in the ipoaLisTable should exist for each ipAddrEntry that is associated with an ATM related interface used for Classical IP and ARP over ATM traffic.
Its ipAdEntAddr and ipAdEntNetMask when ANDed together should equal the ipoaLisSubnetAddr of the corresponding ipoaLisEntry." INDEX { ipoaLisSubnetAddr } ::= { ipoaLisTable 1 }
ipoaLisSubnetAddr OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP subnet address associated with this LIS." ::= { ipoaLisEntry 1 }
ipoaLisDefaultMtu OBJECT-TYPE SYNTAX Integer32 (0..65535) MAX-ACCESS read-create STATUS current DESCRIPTION "The default MTU used within this LIS. Note that the actual MTU used for a VC between two members of the LIS may be negotiated during connection setup and may be different than this value. The ipoaVcNegotiatedMtu object indicates the actual MTU in use for a particular VC." DEFVAL { 9180 }
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::= { ipoaLisEntry 2 }
ipoaLisDefaultEncapsType OBJECT-TYPE SYNTAX IpoaEncapsType MAX-ACCESS read-create STATUS current DESCRIPTION "The default encapsulation to use on VCs created for this LIS. Note that the actual encapsulation type may be negotiated during connection setup and may be different than this value. The ipoaVcNegotiatedEncapsType object indicates the actual encapsulation in use for a particular VC." DEFVAL { llcSnap } ::= { ipoaLisEntry 3 }
ipoaLisInactivityTimer OBJECT-TYPE SYNTAX Integer32 UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "The time, in seconds, before a call established for an ipNetToMediaEntry on a client will timeout due to no traffic being passed on the VC. A value of 0 implies no time out." REFERENCE "RFC 1755, Sec. 3.4 VC Teardown" DEFVAL { 1200 } ::= { ipoaLisEntry 4 }
ipoaLisMinHoldingTime OBJECT-TYPE SYNTAX Integer32 (0..65535) UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "The minimum amount of time, in seconds, that a call will remain open. If 0 then ipoaInactivityTimer will completely determine when a call is terminated." REFERENCE "RFC 1755, Sec. 3.4 VC Teardown" DEFVAL { 60 } ::= { ipoaLisEntry 5 }
ipoaLisQDepth OBJECT-TYPE SYNTAX Integer32 (1..65535) UNITS "packets"
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MAX-ACCESS read-create STATUS current DESCRIPTION "The maximum number of outstanding requests that are allowed while waiting for ATMARP replies and InATMARP replies for this LIS." DEFVAL { 1 } ::= { ipoaLisEntry 6 }
ipoaLisMaxCalls OBJECT-TYPE SYNTAX Integer32 (1..65535) MAX-ACCESS read-create STATUS current DESCRIPTION "The maximum number of SVCs that can be established simultaneously for this LIS." DEFVAL { 500 } ::= { ipoaLisEntry 7 }
ipoaLisCacheEntryAge OBJECT-TYPE SYNTAX Integer32 (60..1200) UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "The time, in seconds, before an ipNetToMediaEntry will age out of the table. Note that the default value will be different for a client and a server. An ATMARP Server should use a default of 1200 and a client should use 900." DEFVAL { 900 } ::= { ipoaLisEntry 8 }
ipoaLisRetries OBJECT-TYPE SYNTAX Integer32 (0..10) MAX-ACCESS read-create STATUS current DESCRIPTION "The number of times the ATMARP request will be retried when no response is received in the timeout interval indicated by ipoaLisTimeout." DEFVAL { 2 } ::= { ipoaLisEntry 9 }
ipoaLisTimeout OBJECT-TYPE SYNTAX Integer32 (1..60) UNITS "seconds" MAX-ACCESS read-create
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STATUS current DESCRIPTION "The time to wait, in seconds, before retransmission of an ARP request." DEFVAL { 10 } ::= { ipoaLisEntry 10 }
ipoaLisDefaultPeakCellRate OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-create STATUS current DESCRIPTION "This object is the signalling parameter that should be used when setting up all best effort VCCs (Virtual Channel Connections). This parameter applies to the forward and backward direction on a per best effort VCC basis. A value of zero implies that no configured default exists and that local policy should be used to determine the actual default to used during call setup. ATM Signaling Support for IP over ATM (RFC 1755) recommends 1/10th of the ATM interface's speed." ::= { ipoaLisEntry 11 }
ipoaLisActiveVcs OBJECT-TYPE SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of active SVCs for this LIS." ::= { ipoaLisEntry 12 }
ipoaLisRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object allows entries to be created and deleted in the ipoaLisTable.
When the ipoaLisRowStatus deleted (by setting this object to destroy(6)), this has the side-effect of removing all entries from the ipNetToMediaTable that are associated with this LIS (in other words, it flushes the entity's ATMARP cache). It also removes the ipoaVcTable entries that were associated with those ipNetToMediaTable entries. Destroying the row also
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removes the corresponding entries in the ipoaArpSrvrTable, ipoaArpClientTable, ipoaLisIfMappingTable, and ipoaArpRemoteSrvrTable.
Entries in both the ipNetToMediaTable and the ipoaVcTable that are associated with a ipoaConfigPvcEntry are not affected by changes to ipoaLisRowStatus." REFERENCE "RFC 1903, 'Textual Conventions for Version 2 of the Simple Network Management Protocol (SNMPv2).'" ::= { ipoaLisEntry 13 }
-- The ATM Logical IP Subnet Interface Mapping Table
ipoaLisIfMappingTable OBJECT-TYPE SYNTAX SEQUENCE OF IpoaLisIfMappingEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "There is one entry in this table for every combination of ipoaLisEntry and IP over ATM interface." ::= { ipoaObjects 3 }
ipoaLisIfMappingEntry OBJECT-TYPE SYNTAX IpoaLisIfMappingEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Defines an entry in the ipoaLisIfMappingTable." INDEX { ipoaLisSubnetAddr, ipoaLisIfMappingIfIndex } ::= { ipoaLisIfMappingTable 1 }
ipoaLisIfMappingIfIndex OBJECT-TYPE SYNTAX InterfaceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ipAdEntIfIndex object from an ipAddrEntry is used as an index to this table when its ipAdEntAddr is in the subnet implied by ipoaLisSubnetAddr."
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::= { ipoaLisIfMappingEntry 1 }
ipoaLisIfMappingRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object allows entries to be created and deleted in the ipoaLisIfMappingTable." REFERENCE "RFC 1903, 'Textual Conventions for Version 2 of the Simple Network Management Protocol (SNMPv2).'" ::= { ipoaLisIfMappingEntry 2 }
-- The ATMARP Client Table
ipoaArpClientTable OBJECT-TYPE SYNTAX SEQUENCE OF IpoaArpClientEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ATMARP clients running on this system." ::= { ipoaObjects 4 }
ipoaArpClientEntry OBJECT-TYPE SYNTAX IpoaArpClientEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a single ATMARP Client. Clients can be started and stopped by adding and removing entries from this table. An entry in the ipoaArpClientTable has a corresponding entry in the ipAddrTable. Both are indexed by ipAdEntAddr. The ifIndex and subnet mask of a client entry are the ipAddrEntry's ipAdEntIfIndex and ipAdEntNetMask, respectively.
Note that adding and removing entries from this table may have the same effect on the corresponding ipAddrTable entry. Row creation of an entry in this table requires that either the corresponding ipAddrTable entry exists or that ipAdEntIfIndex and ipAdEntNetMask be specified in the creation of an ipoaArpClientEntry at a minimum in order to create the corresponding ipAddrEntry. Specification of ipAdEntBcastAddr and ipAdEntReasmMaxSize to complete an ipAddrEntry is implementation dependent.
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Whether a corresponding ipAddrEntry is deleted during the deletion of an ipoaArpClientEntry is considered implementation dependent." INDEX { ipAdEntAddr } ::= { ipoaArpClientTable 1 }
ipoaArpClientAtmAddr OBJECT-TYPE SYNTAX IpoaAtmAddr MAX-ACCESS read-create STATUS current DESCRIPTION "The ATM address of the client." ::= { ipoaArpClientEntry 1 }
ipoaArpClientSrvrInUse OBJECT-TYPE SYNTAX IpoaAtmAddr MAX-ACCESS read-only STATUS current DESCRIPTION "The ATM address of the ATMARP Server, ipoaArpRemoteSrvrAtmAddr, in use by this client. A zero length octet string implies that communication with a Remote ATMARP Server is not in effect." DEFVAL { ''H } ::= { ipoaArpClientEntry 2 }
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
MAX-ACCESS read-only STATUS current DESCRIPTION "The number of InATMARP requests received by this client." ::= { ipoaArpClientEntry 3 }
ipoaArpClientInArpOutReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of InATMARP requests sent by this client." ::= { ipoaArpClientEntry 4 }
ipoaArpClientInArpInReplies OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of InATMARP replies received by this client." ::= { ipoaArpClientEntry 5 }
ipoaArpClientInArpOutReplies OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of InATMARP replies sent by this client." ::= { ipoaArpClientEntry 6 }
ipoaArpClientInArpInvalidInReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times that this client detected an invalid InATMARP request." ::= { ipoaArpClientEntry 7 }
ipoaArpClientInArpInvalidOutReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times that this client did not receive an InATMARP reply."
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::= { ipoaArpClientEntry 8 }
ipoaArpClientArpInReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of ATMARP requests received by this client." ::= { ipoaArpClientEntry 9 }
ipoaArpClientArpOutReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of ATMARP requests sent by this client." ::= { ipoaArpClientEntry 10 }
ipoaArpClientArpInReplies OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of ATMARP replies received by this client." ::= { ipoaArpClientEntry 11 }
ipoaArpClientArpOutReplies OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of ATMARP replies sent by this client." ::= { ipoaArpClientEntry 12 }
ipoaArpClientArpInNaks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of negative ATMARP replies received by this client." ::= { ipoaArpClientEntry 13 }
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
STATUS current DESCRIPTION "Total number of negative ATMARP replies sent by this client.
Classic IP and ARP over ATM does not require an ATMARP client to transmit an ATMARP_NAK upon receipt of an ATMARP request from another ATMARP client. However, implementation experience has shown that this error condition is somewhat easy to create inadvertently by configuring one ATMARP client with an ipoaArpRemoteSrvrTable entry containing an ipoaArpRemoteSrvrAtmAddr value which is the ATM address of another ATMARP client-only system.
If an ATMARP client supports the transmission of ATMARP_NAKs, then it should increment ipoaArpClientArpOutNaks each time it transmits an ATMARP_NAK. Otherwise, support of this object is considered optional." ::= { ipoaArpClientEntry 14 }
ipoaArpClientArpUnknownOps OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times that this client received an ATMARP message with an operation code for which it is not coded to support." ::= { ipoaArpClientEntry 15 }
ipoaArpClientArpNoSrvrResps OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times this client failed to receive a response from a ATMARP Server within the ipoaLisTimeout value for ipoaLisRetries times. This may imply that the client will re-elect a new primary ATMARP Server for this LIS from the ipoaArpRemoteSrvrTable." ::= { ipoaArpClientEntry 16 }
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
MAX-ACCESS read-create STATUS current DESCRIPTION "This object allows entries to be created and deleted from the ipoaArpClientTable." REFERENCE "RFC 1903, 'Textual Conventions for Version 2 of the Simple Network Management Protocol (SNMPv2).'" ::= { ipoaArpClientEntry 17 }
-- The ATMARP Server Table
ipoaArpSrvrTable OBJECT-TYPE SYNTAX SEQUENCE OF IpoaArpSrvrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ATMARP Servers running on this system." ::= { ipoaObjects 5 }
ipoaArpSrvrEntry OBJECT-TYPE SYNTAX IpoaArpSrvrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about an ATMARP Server within a LIS. An entry in this table has two indexes: first ipAdEntAddr, which is the IP address that this system uses as a member of the LIS, and then ipoaArpSrvrAddr, which is the ATM address of the ATMARP Server.
Entries may be created by a management application using the ipoaArpSrvrRowStatus object. Entries in this table may also be created by the system and not by a management application, for example via ILMI.
Entries in this table may be deleted by setting the ipoaArpSrvrRowStatus object to 'destroy(6)'. This includes entries that were added by the system and not by a management application." INDEX { ipAdEntAddr, ipoaArpSrvrAddr } ::= { ipoaArpSrvrTable 1 }
ipoaArpSrvrAddr OBJECT-TYPE SYNTAX IpoaAtmAddr MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ATM address of the ATMARP Server." ::= { ipoaArpSrvrEntry 1 }
ipoaArpSrvrLis OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-create STATUS current DESCRIPTION "The subnet address that identifies the LIS with which this server is associated." ::= { ipoaArpSrvrEntry 2 }
ipoaArpSrvrInArpInReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of InATMARP requests received by this ATMARP Server." ::= { ipoaArpSrvrEntry 3 }
ipoaArpSrvrInArpOutReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of InATMARP requests sent by this ATMARP Server." ::= { ipoaArpSrvrEntry 4 }
ipoaArpSrvrInArpInReplies OBJECT-TYPE
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SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of InATMARP replies received by this ATMARP Server." ::= { ipoaArpSrvrEntry 5 }
ipoaArpSrvrInArpOutReplies OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of InATMARP replies sent by this ATMARP Server." ::= { ipoaArpSrvrEntry 6 }
ipoaArpSrvrInArpInvalidInReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of invalid InATMARP requests received by this ATMARP Server." ::= { ipoaArpSrvrEntry 7 }
ipoaArpSrvrInArpInvalidOutReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times that this server did not receive an InATMARP reply." ::= { ipoaArpSrvrEntry 8 }
ipoaArpSrvrArpInReqs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of ATMARP requests received by this ATMARP Server." ::= { ipoaArpSrvrEntry 9 }
ipoaArpSrvrArpOutReplies OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current
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DESCRIPTION "Total number of ATMARP replies sent by this ATMARP Server." ::= { ipoaArpSrvrEntry 10 }
ipoaArpSrvrArpOutNaks OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "Total number of negative ATMARP replies sent by this ATMARP Server." ::= { ipoaArpSrvrEntry 11 }
ipoaArpSrvrArpDupIpAddrs OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times that a duplicate IP address was detected by this ATMARP Server." ::= { ipoaArpSrvrEntry 12 }
ipoaArpSrvrArpUnknownOps OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times that this ATMARP Server received an ATMARP message with an operation code for which it is not coded to support." ::= { ipoaArpSrvrEntry 13 }
ipoaArpSrvrRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object allows entries to be created and deleted from the ipoaArpSrvrTable." REFERENCE "RFC 1903, 'Textual Conventions for Version 2 of the Simple Network Management Protocol (SNMPv2).'" ::= { ipoaArpSrvrEntry 14 }
-- The Remote ATMARP Server Table
ipoaArpRemoteSrvrTable OBJECT-TYPE
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SYNTAX SEQUENCE OF IpoaArpRemoteSrvrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of non-local ATMARP Servers associated with a LIS. An entry in this table has three indexes: first the ipoaLisSubnetAddr of the LIS for which the corresponding ATMARP Server provides ATMARP services, then the ipoaArpRemoteSrvrAtmAddr, which is the ATM address of the remote ATMARP Server, and finally the ifIndex of the interface on which the VC to the ATMARP Remote Server will be opened. An ifIndex value of 0 should be used when a single VC is to be shared for ATMARP purposes by multiple interfaces." ::= { ipoaObjects 6 }
ipoaArpRemoteSrvrEntry OBJECT-TYPE SYNTAX IpoaArpRemoteSrvrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about one non-local ATMARP Server." INDEX { ipoaLisSubnetAddr, ipoaArpRemoteSrvrAtmAddr, ipoaArpRemoteSrvrIfIndex } ::= { ipoaArpRemoteSrvrTable 1 }
ipoaArpRemoteSrvrAtmAddr OBJECT-TYPE SYNTAX IpoaAtmAddr MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ATM address of the remote ATMARP Server." ::= { ipoaArpRemoteSrvrEntry 1 }
ipoaArpRemoteSrvrRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION
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"This object allows entries to be created and deleted from the ipoaArpRemoteSrvrTable.
Deleting an ipoaArpRemoteSrvrEntry (by setting this object to destroy(6)) may affect ipoaArpClientTable entries. The object ipoaArpClientSrvrInUse in an ipoaArpClientSrvrEntry may contain the ATM address of an ATMARP Remote Server whose entry in the ipoaArpRemoteSrvrTable is being removed. In this case, any corresponding ipoaArpClientSrvrInUse objects should be at a minimum invalidated by setting their values to that of a zero length OCTET STRING.
The value of ipoaArpRemoteSrvrOperStatus should be consistent with that of ipoaArpRemoteSrvrRowStatus. For example, successfully setting the value of this object to notInService(2) after its being in the up(1) state should result in ipoaArpRemoteSrvrOperStatus being set to down(2) if currently up(1)." REFERENCE "RFC 1903, 'Textual Conventions for Version 2 of the Simple Network Management Protocol (SNMPv2).'" ::= { ipoaArpRemoteSrvrEntry 2 }
ipoaArpRemoteSrvrIfIndex OBJECT-TYPE SYNTAX InterfaceIndexOrZero MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ifIndex of the interface that the VC to the Remote ATMARP Server is associated with." ::= { ipoaArpRemoteSrvrEntry 3 }
ipoaArpRemoteSrvrIpAddr OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP Address of the Remote ATMARP Server. A value of 0.0.0.0 implies that this address isn't known." DEFVAL { '00000000'H } ::= { ipoaArpRemoteSrvrEntry 4 }
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
up(1), -- use this ATMARP Server down(2) -- stop using this ATMARP Server } MAX-ACCESS read-create STATUS current DESCRIPTION "The desired state for use of the ATMARP Server represented by an entry in this table. ipoaArpRemoteSrvrAdminStatus values:
up(1) - Attempt to activate use of the ATMARP Server represented by this entry in the ipoaArpRemoteSrvrTable. down(2) - Deactivate use of this ATMARP Server.
When a managed system creates an entry in this table ipoaArpRemoteSrvrAdminStatus and ipoaArpRemoteSrvrOperStatus are initialized as down(2) by default." DEFVAL { down } ::= { ipoaArpRemoteSrvrEntry 5 }
ipoaArpRemoteSrvrOperStatus OBJECT-TYPE SYNTAX INTEGER { up(1), -- eligible for use down(2) -- not eligible for use } MAX-ACCESS read-only STATUS current DESCRIPTION "The current operational state for use of a Remote ATMARP Server. An up(1) entry has a VC established to the respective Remote ATMARP Server:
up(1) - A VC exists to Remote ATMARP Server whose IP Address is stored in ipoaArpRemoteSrvrIpAddr. This VC can be determined by searching the ipoaVcTable using ipoaArpRemoteSrvrIfIndex (if not 0, otherwise ignore ipNetToMediaIfIndex index) and ipoaArpRemoteSrvrIpAddr. An ipoaArpClientEntry should exist with its ipoaArpClientSrvrInUse object having the same value as ipoaArpRemoteSrvrAtmAddr.
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down(2) - Entry exists without an active VC to the Remote ATMARP Server.
Transition from up(1) to down(2) status may affect ipoaArpClientTable entries. The object ipoaArpClientSrvrInUse in an ipoaArpClientSrvrEntry may contain the ATM address of an ATMARP Remote Server whose entry in the ipoaArpRemoteSrvrTable is being deactivated. In this case, any corresponding ipoaArpClientSrvrInUse objects should be at a minimum invalidated by setting their values to that of a zero length OCTET STRING.
If ipoaArpRemoteSrvrAdminStatus is down(2) then ipoaArpRemoteSrvrOperStatus should be down(2). If ipoaArpRemoteSrvrAdminStatus is changed to up(1) then ipoaArpRemoteSrvrOperStatus should change to up(1) if the Remote ATMARP Server entry can be activated." DEFVAL { down } ::= { ipoaArpRemoteSrvrEntry 6 }
-- The ATM VC Table
ipoaVcTable OBJECT-TYPE SYNTAX SEQUENCE OF IpoaVcEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A system that supports IP over ATM is an IP system and therefore MUST support all of the appropriate tables in the SNMPv2-MIB (RFC 1907), the IF-MIB (RFC 2233), the IP-MIB (RFC 2011), the TCP-MIB (RFC 2012), and the UDP-MIB (RFC 2013). This includes the ipNetToMediaTable (the ARP cache) that is defined within the IP-MIB (RFC 2011). The ipoaVcTable keeps a set of VCs for each entry in the ARP cache that was put there by an IP over ATM system acting as either a host or server. The ipoaVcTable doesn't augment the ipNetToMediaTable (ARP Cache) since the the correspondence between tables is not necessarily one-to-one.
An ipNetToMediaPhysAddress object should contain the content as defined by the IpoaAtmAddr textual convention when used to hold an IPOA-MIB ATM Address." ::= { ipoaObjects 7 }
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ipoaVcEntry OBJECT-TYPE SYNTAX IpoaVcEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A VC (permanent or switched) that this host or server has opened with another member of a LIS. Additional information can be determined about the VC from the ATM-MIB.
Entries in this table cannot be created by management applications.
In an SVC environment, an entry is automatically added by the system as the result of ATMARP processing.
In a PVC environment, an entry is automatically added to this table when an entry is created in the ipoaConfigPvcTable and the IP Address at the remote end of the PVC is discovered using InATMARP. An entry also is added to the ipNetToMediaTable." INDEX { ipNetToMediaIfIndex, ipNetToMediaNetAddress, ipoaVcVpi, ipoaVcVci } ::= { ipoaVcTable 1 }
ipoaVcVpi OBJECT-TYPE SYNTAX IpoaVpiInteger MAX-ACCESS not-accessible STATUS current DESCRIPTION "The VPI value for the Virtual Circuit." ::= { ipoaVcEntry 1 }
ipoaVcVci OBJECT-TYPE SYNTAX IpoaVciInteger MAX-ACCESS not-accessible STATUS current
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DESCRIPTION "The VCI value for the Virtual Circuit." ::= { ipoaVcEntry 2 }
ipoaVcType OBJECT-TYPE SYNTAX IpoaAtmConnKind MAX-ACCESS read-only STATUS current DESCRIPTION "The type of the Virtual Circuit." ::= { ipoaVcEntry 3 }
ipoaVcNegotiatedEncapsType OBJECT-TYPE SYNTAX IpoaEncapsType MAX-ACCESS read-only STATUS current DESCRIPTION "The encapsulation type used when communicating over this circuit." ::= { ipoaVcEntry 4 }
ipoaVcNegotiatedMtu OBJECT-TYPE SYNTAX Integer32 (0..65535) MAX-ACCESS read-only STATUS current DESCRIPTION "The MTU used when communicating over this circuit." ::= { ipoaVcEntry 5 }
-- The ATM Config PVC Table
ipoaConfigPvcTable OBJECT-TYPE SYNTAX SEQUENCE OF IpoaConfigPvcEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table MUST be supported when PVCs are intended to be supported in order to enable the setup of PVCs for use by IP." ::= { ipoaObjects 8 }
ipoaConfigPvcEntry OBJECT-TYPE SYNTAX IpoaConfigPvcEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Defines a single PVC that exists at this host for use by IP."
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ipoaConfigPvcIfIndex OBJECT-TYPE SYNTAX InterfaceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ifIndex of the ATM Interface that this PVC is associated with." ::= { ipoaConfigPvcEntry 1 }
ipoaConfigPvcVpi OBJECT-TYPE SYNTAX IpoaVpiInteger MAX-ACCESS not-accessible STATUS current DESCRIPTION "The VPI value for the Virtual Circuit." ::= { ipoaConfigPvcEntry 2 }
ipoaConfigPvcVci OBJECT-TYPE SYNTAX IpoaVciInteger MAX-ACCESS not-accessible STATUS current DESCRIPTION "The VCI value for the Virtual Circuit." ::= { ipoaConfigPvcEntry 3 }
ipoaConfigPvcDefaultMtu OBJECT-TYPE SYNTAX Integer32 (0..65535) MAX-ACCESS read-create STATUS current DESCRIPTION "Classical IP and ARP over ATM allows use of other MTU values for PVCs but considers how a value other than 9180 could be selected to be out of scope. ipoaConfigPvcDefaultMtu can be used to configure the MTU to be used for the PVC.
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Both ends MUST have the same value configured." DEFVAL { 9180 } ::= { ipoaConfigPvcEntry 4 }
ipoaConfigPvcRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object allows rows to be created and deleted in the ipoaConfigPvcTable. Creation of an entry in this table should eventually result in the creation of an ipNetToMediaEntry and a corresponding ipoaVcEntry after InATMARP has determined the destination address of the remote system that the PVC is connected to. Setting this object to destroy(6) should remove the corresponding ipNetToMediaTable and ipoaVcTable entries." REFERENCE "RFC 1903, 'Textual Conventions for Version 2 of the Simple Network Management Protocol (SNMPv2).'" ::= { ipoaConfigPvcEntry 5 }
ipoaMtuExceeded NOTIFICATION-TYPE OBJECTS { ipoaVcNegotiatedMtu } STATUS current DESCRIPTION "A frame was received that exceeds the negotiated MTU size. The VPI and VCI of the VC for which this condition was detected can be determined from the index values for ipoaVcNegotiatedMtu. In addition, the ifIndex and IP Address can be determined as well (refer to the ipoaVcTable)." ::= { ipoaTrapPrefix 1 }
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
} STATUS current DESCRIPTION "The ATMARP Server has detected more than one ATM end point attempting to associate the same IP address with different ATM addresses." ::= { ipoaTrapPrefix 2 }
ipoaLisCreate NOTIFICATION-TYPE OBJECTS { ipoaLisSubnetAddr } STATUS current DESCRIPTION "Generation of this trap occurs when an ipoaLisEntry is created while the ipoaLisTrapEnable.0 object has the value enabled(1)." ::= { ipoaTrapPrefix 3 }
ipoaLisDelete NOTIFICATION-TYPE OBJECTS { ipoaLisSubnetAddr } STATUS current DESCRIPTION "Generation of this trap occurs when an ipoaLisEntry is deleted while the ipoaLisTrapEnable.0 object has the value enabled(1)." ::= { ipoaTrapPrefix 4 }
ipoaCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for agents that support the IPOA-MIB." MODULE -- this module MANDATORY-GROUPS { ipoaGeneralGroup, ipoaBasicNotificationsGroup } GROUP ipoaClientGroup
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DESCRIPTION "This group is mandatory for all hosts where IP over ATM client support is present." GROUP ipoaSrvrGroup DESCRIPTION "This group is mandatory for all hosts where ATMARP Servers are present." GROUP ipoaSrvrNotificationsGroup DESCRIPTION "This group is mandatory for all hosts where ATMARP Servers are present." GROUP ipoaLisNotificationsGroup DESCRIPTION "This group is mandatory for all hosts where ATMARP client only support is present and ipoaLisTrapEnable is allowed to be set to enabled(1)." GROUP ipoaLisTableGroup DESCRIPTION "This group is mandatory for all entities which support IP over ATM SVCs. Support of objects in this group by IP over ATM clients which only support IP over ATM PVCs is optional."
OBJECT ipoaLisDefaultMtu MIN-ACCESS read-only DESCRIPTION "The agent is not required to allow the user to change the default MTU from the value 9180.
The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisDefaultEncapsType MIN-ACCESS read-only DESCRIPTION "The agent is not required to allow the user to specify the default encapsulation type for the LIS.
The agent is not required to support a SET operation to this object in the absence of adequate security."
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
"The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisMinHoldingTime MIN-ACCESS read-only DESCRIPTION "The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisQDepth MIN-ACCESS read-only DESCRIPTION "The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisMaxCalls MIN-ACCESS read-only DESCRIPTION "The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisCacheEntryAge MIN-ACCESS read-only DESCRIPTION "The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisRetries MIN-ACCESS read-only DESCRIPTION "The agent is not required to allow the user to change the default number of times an ATMARP request will be retried when no response is received from the default of 2.
The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisTimeout MIN-ACCESS read-only DESCRIPTION "The agent is not required to allow the user
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to change the default retransmission time from the default of 10 seconds.
The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisDefaultPeakCellRate MIN-ACCESS read-only DESCRIPTION "Implementations that do not support IP over ATM SVC usage are not required to allow the user to specify a best effort default peak cell rate since typically the ipoaLisTable won't exist.
The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisIfMappingRowStatus SYNTAX INTEGER { active(1) -- subset of RowStatus } MIN-ACCESS read-only DESCRIPTION "The agent is not required to support a SET operation to this object, and only one of the six enumerated values for the RowStatus textual convention need be supported, specifically: active(1)."
OBJECT ipoaArpClientAtmAddr MIN-ACCESS read-only DESCRIPTION "The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaArpSrvrLis MIN-ACCESS read-only DESCRIPTION "The agent is not required to support a SET operation to this object in the absence of adequate security."
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
DESCRIPTION "The agent is not required to support a SET operation to this object in the absence of adequate security. In this case the value of this object should be up(1) when a VC exists to the Remote ATMARP Server or otherwise down(2), and the agent should not allow a SET operation to this object."
OBJECT ipoaConfigPvcDefaultMtu MIN-ACCESS read-only DESCRIPTION "The agent is not required to support a SET operation to this object in the absence of adequate security."
OBJECT ipoaLisRowStatus SYNTAX INTEGER { active(1) -- subset of RowStatus } MIN-ACCESS read-only DESCRIPTION "Write access is not required, and only one of the six enumerated values for the RowStatus textual convention need be supported, specifically: active(1)."
OBJECT ipoaArpClientRowStatus SYNTAX INTEGER { active(1) -- subset of RowStatus } MIN-ACCESS read-only DESCRIPTION "Write access is not required, and only one of the six enumerated values for the RowStatus textual convention need be supported, specifically: active(1)."
OBJECT ipoaArpRemoteSrvrRowStatus SYNTAX INTEGER { active(1) -- subset of RowStatus } MIN-ACCESS read-only DESCRIPTION "Write access is not required, and only one of the six enumerated values for the RowStatus textual convention need be supported, specifically: active(1)."
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OBJECT ipoaArpSrvrRowStatus SYNTAX INTEGER { active(1) -- subset of RowStatus } MIN-ACCESS read-only DESCRIPTION "Write access is not required, and only one of the six enumerated values for the RowStatus textual convention need be supported, specifically: active(1)."
OBJECT ipoaConfigPvcRowStatus SYNTAX INTEGER { active(1) -- subset of RowStatus } MIN-ACCESS read-only DESCRIPTION "Write access is not required, and only one of the six enumerated values for the RowStatus textual convention need be supported, specifically: active(1)."
OBJECT ipoaArpClientArpOutNaks MIN-ACCESS not-accessible DESCRIPTION "Classic IP and ARP over ATM does not require an ATMARP client to transmit an ATMARP_NAK upon receipt of an ATMARP request from another ATMARP client. This object should be implemented when an ATMARP client supports the transmission of ATMARP_NAKs."
::= { ipoaCompliances 1 }
-- units of conformance
ipoaGeneralGroup OBJECT-GROUP OBJECTS { ipoaVcType, ipoaVcNegotiatedEncapsType, ipoaVcNegotiatedMtu, ipoaConfigPvcDefaultMtu, ipoaConfigPvcRowStatus } STATUS current DESCRIPTION "This group is mandatory for all IP over ATM entities." ::= { ipoaGroups 1 }
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ipoaClientGroup OBJECT-GROUP OBJECTS { ipoaArpClientAtmAddr, ipoaArpClientSrvrInUse, ipoaArpClientInArpInReqs, ipoaArpClientInArpOutReqs, ipoaArpClientInArpInReplies, ipoaArpClientInArpOutReplies, ipoaArpClientInArpInvalidInReqs, ipoaArpClientInArpInvalidOutReqs, ipoaArpClientArpInReqs, ipoaArpClientArpOutReqs, ipoaArpClientArpInReplies, ipoaArpClientArpOutReplies, ipoaArpClientArpInNaks, ipoaArpClientArpOutNaks, ipoaArpClientArpUnknownOps, ipoaArpClientArpNoSrvrResps, ipoaArpClientRowStatus } STATUS current DESCRIPTION "This group is mandatory for all hosts where an IP over ATM client is present." ::= { ipoaGroups 2 }
ipoaSrvrGroup OBJECT-GROUP OBJECTS { ipoaArpSrvrLis, ipoaArpSrvrInArpInReqs, ipoaArpSrvrInArpOutReqs, ipoaArpSrvrInArpInReplies, ipoaArpSrvrInArpOutReplies, ipoaArpSrvrInArpInvalidInReqs, ipoaArpSrvrInArpInvalidOutReqs, ipoaArpSrvrArpInReqs, ipoaArpSrvrArpOutReplies, ipoaArpSrvrArpOutNaks, ipoaArpSrvrArpDupIpAddrs, ipoaArpSrvrArpUnknownOps, ipoaArpSrvrRowStatus } STATUS current DESCRIPTION "This group is mandatory for all hosts where ATMARP Servers are present." ::= { ipoaGroups 3 }
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ipoaBasicNotificationsGroup NOTIFICATION-GROUP NOTIFICATIONS { ipoaMtuExceeded } STATUS current DESCRIPTION "The notification which an IP over ATM entity is required to implement." ::= { ipoaGroups 4 }
ipoaSrvrNotificationsGroup NOTIFICATION-GROUP NOTIFICATIONS { ipoaDuplicateIpAddress } STATUS current DESCRIPTION "The notification which an IP over ATM ATMARP Server is required to implement." ::= { ipoaGroups 5 }
ipoaLisNotificationsGroup NOTIFICATION-GROUP NOTIFICATIONS { ipoaLisCreate, ipoaLisDelete } STATUS current DESCRIPTION "The LIS-related notifications which are required to be implemented by an IP over ATM ATMARP server, as well as by any IP over ATM client which allows ipoaLisTrapEnable to be set to enabled(1)." ::= { ipoaGroups 6 }
RFC 2320 IP and ARP over ATM (IPOA) MIB April 1998
ipoaLisRowStatus, ipoaLisIfMappingRowStatus, ipoaArpRemoteSrvrRowStatus, ipoaArpRemoteSrvrIpAddr, ipoaArpRemoteSrvrAdminStatus, ipoaArpRemoteSrvrOperStatus } STATUS current DESCRIPTION "This group is mandatory for all entities which support IP over ATM SVCs. Support of objects in this group by IP over ATM clients which only support IP over ATM PVCs is optional." ::= { ipoaGroups 7 }
Certain management information defined in this MIB MAY be considered sensitive in some network environments. Therefore, authentication of received SNMP requests and controlled access to management information SHOULD be employed in such environments. The method for this authentication is a function of the SNMP Administrative Framework, and has not been expanded by this MIB.
Several objects in this MIB allow write access or provide for row creation. Allowing this support in a non-secure environment can have a negative effect on network operations. It is RECOMMENDED that implementers seriously consider whether set operations or row creation be allowed without providing, at a minimum, authentication of request origin. It is RECOMMENDED that without such support that the following objects be implemented as read-only:
o ipoaLisDefaultMtu o ipoaLisDefaultEncapsType o ipoaLisInactivityTimer o ipoaLisMinHoldingTime o ipoaLisQDepth o ipoaLisMaxCalls o ipoaLisCacheEntryAge o ipoaLisRetries o ipoaLisTimeout o ipoaLisDefaultPeakCellRate o ipoaArpClientAtmAddr o ipoaArpSrvrLis
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o ipoaArpRemoteSrvrAdminStatus, show status as being either up(1) when a VC exists to the Remote ATMARP Server or otherwise down(2). Don't allow set support. ipoaArpRemoteSrvrOperStatus would have the same value as ipoaArpRemoteSrvrAdminStatus. o ipoaConfigPvcDefaultMtu o ipoaLisRowStatus o ipoaArpClientRowStatus o ipoaArpRemoteSrvrRowStatus o ipoaArpSrvrRowStatus o ipoaConfigPvcRowStatus o ipoaLisIfMappingRowStatus
The IETF takes no position regarding the validity or scope of any intellectual property or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; neither does it represent that it has made any effort to identify any such rights. Information on the IETF's procedures with respect to rights in standards-track and standards- related documentation can be found in BCP-11. Copies of claims of rights made available for publication and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementors or users of this specification can be obtained from the IETF Secretariat.
The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights which may cover technology that may be required to practice this standard. Please address the information to the IETF Executive Director.
This document is a product of the Internetworking Over NBMA Working Group. The authors of this document would like to recognize Keith McCloghrie from Cisco Systems for his support as our mentor from the Network Management Area.
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[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 1902, January 1996.
[2] McCloghrie, K., and F. Kastenholtz, "The Interfaces Group MIB using SMIv2", RFC 2233, November 1997.
[3] Laubach M., and J. Halpern, "Classical IP and ARP over ATM", RFC 2225, April 1998.
[4] Ahmed, M., and K. Tesink, "Definitions of Managed Objects for ATM Management Version 8.0 using SMIv2", RFC 1695, August 1994.
[5] McCloghrie, K., and M. Rose, Editors, "Management Information Base for Network Management of TCP/IP-based internets: MIB-II", STD 17, RFC 1213, March 1991.
[6] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Textual Conventions for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1903, January 1996.
[7] 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.
[8] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Conformance Statements for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1904, January 1996.
[9] McCloghrie K., "Management Information Base for the Internet Protocol using SMIv2", RFC 2011, November 1996.
[10] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997.
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[11] Perez, M., Liaw, F., Mankin, A., Hoffman, E., Grossman, D. and A. Malis, "ATM Signaling Support for IP over ATM", RFC 1755, February 1995.
[12] Case, J., McCloghrie, K., Rose, M., and Waldbusser, S., "Transport Mappings for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1906, January 1996.
[13] Case, J., McCloghrie, K., Rose, M., and Waldbusser, S., "Management Information Base for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1907, January 1996.
[14] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Coexistence between Version 1 and Version 2 of the Internet-standard Network Management Framework", RFC 1908, January 1996.
Maria N. Greene Xedia Corp. 119 Russell Dr. Littleton, MA 01460 EMail: maria@xedia.com
James Luciani Bay Networks, Inc. 3 Federal St., BL3-04 Billerica, MA 01821, USA Phone: +1-508-439-4734 EMail: luciani@baynetworks.com
Kenneth D. White Dept. G80/Bldg 503 IBM Corporation Research Triangle Park, NC 27709, USA EMail: kennethw@vnet.ibm.com
Ted T.I. Kuo Bay Networks, Inc. 4401 Great America Parkway Santa Clara, CA 95052-8185 Phone: +1-408-495-7319 Fax: +1-408-495-1905 EMail: ted_kuo@Baynetworks.com
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Copyright (C) The Internet Society (1998). All Rights Reserved.
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