EBN-MIB

All MIBs › EBN-MIB

Organization: IETF SNA NAU MIB WG / AIW APPN MIBs SIG

Last Updated: 1998-04-28

Category: SNA and Legacy Protocols

Description: Provides managed objects for controlling and monitoring APPN Extended Border Node (EBN) capabilities, which isolate topology between SNA subnets.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring EBN-MIB with a free 30-day trial of IPNetwork Monitor.

What Is EBN-MIB?

The EBN-MIB is a MIB module in the IBM/IETF SNANAU family, used to manage APPN (Advanced Peer-to-Peer Networking) Extended Border Node capabilities that isolate SNA (Systems Network Architecture) subnet topologies from one another. It exposes objects describing directory/search caching, LU (logical unit) name-to-subnet mappings, and inter-subnet route and class-of-service search results used when resolving resources across SNA subnets. In monitoring terms it tracks software-level operational status of the EBN function on a node or gateway - directory cache size, cache search timers, and the state of resolved cross-subnet routes - rather than physical hardware health. It builds on the broader SNANAU/APPN MIB framework (snanauMIB) for its object identifier structure and conventions. It is typically deployed on SNA-to-IP gateways or APPN border node routers in legacy mainframe/SNA environments that still interconnect isolated SNA subnetworks, making this EBN-MIB reference a useful guide for administrators supporting older APPN infrastructure.

IPNetwork Monitor allows you to monitor SNMP objects defined in EBN-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

SNA/APPN border node routers or gateways
IBM mainframe-network interconnect devices
vendor-neutral, standards-based MIB for APPN networking equipment

Monitoring Examples

An administrator polls ebnDirTable/ebnDirEntry to see which ebnDirLuName values have been cached along with their ebnDirSubnetAffiliation, confirming that LU-to-subnet resolution is working, and watches ebnMaxSearchCache/ebnSearchCacheTime for signs the cache is thrashing from excessive cross-subnet searches. The ebnIsRscvTable (indexed by ebnIsRscvCpName/ebnIsRscvPcid) exposes the ebnIsRscvDestinationRoute and ebnIsRscvDestinationCos chosen for inter-subnet searches, letting an admin confirm a search resolved correctly. Stale or empty entries in ebnIsRscvTable would flag failed cross-subnet resolution.

What Can Be Monitored

directory cache entries and LU-to-subnet mappings
search cache size and timers
cross-subnet route resolution results
destination class of service for inter-subnet searches
APPN border node topology state

Imported Objects

From APPN-MIB

SnaControlPointName

From SNA-NAU-MIB

snanauMIB

MODULE-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
TEXTUAL-CONVENTION

OIDs

OID symbolic	OID numeric	Type	Access	Description
ebnMIB	1.3.6.1.2.1.34.7			The MIB Module for Extended Border Node
ebnObjects	1.3.6.1.2.1.34.7.1
ebnDir	1.3.6.1.2.1.34.7.1.1
ebnDirTable	1.3.6.1.2.1.34.7.1.1.1		not-accessible	The EBN Directory Table. This table is an extension to the APPN MIB's appnDirTable. Entries in this table are in one-to-one correspondence with entries in the appnDirTable, with corresponding entries having identical values for their respective indexes.
ebnDirEntry	1.3.6.1.2.1.34.7.1.1.1.1		not-accessible	Entry in the EBN Directory Table.
SNA ebnDirLuName	1.3.6.1.2.1.34.7.1.1.1.1.1	SnaNAUWildcardName	not-accessible	Fully qualified network LU name in the domain of a serving network node. If this object has the same value as the appnDirLuName object in the APPN MIB, then the two objects are referring to the same LU.
INT ebnDirSubnetAffiliation	1.3.6.1.2.1.34.7.1.1.1.1.2	INTEGER	read-only	Specifies the subnetwork affiliation of the LU: - native(1) : The LU is in the native APPN subnetwork. - nonNative(2) : The LU is in a non-native APPN subnetwork. - subarea(3) : The LU is in a subarea network.
ebnIsRscv	1.3.6.1.2.1.34.7.1.2
ebnIsRscvTable	1.3.6.1.2.1.34.7.1.2.1		not-accessible	The EBN Intermediate Session RSCV table. This table is an extension to the appnIsInTable. It contains the RSCV and COS used in the direction of the BIND destination. There is an entry in this table for each session that traverses an ISTG when it enters or leaves this EBN, with corresponding entries having identical values for their respective indexes.
ebnIsRscvEntry	1.3.6.1.2.1.34.7.1.2.1.1		not-accessible	Entry in ebnIsRscvTable.
NUM ebnIsRscvCpName	1.3.6.1.2.1.34.7.1.2.1.1.1	SnaControlPointName	not-accessible	The network-qualified control point name of the node at which the session and PCID originated. For APPN and LEN nodes, this is either CP name of the APPN node at which the origin LU is located or the CP name of the NN serving the LEN node at which the origin LU is located. For DLUR resources it is the name of the owning SSCP. If this object has the same value as the appnIsInFqCpName object in the APPN MIB, then the two objects are referring to the same APPN control point.
OCT ebnIsRscvPcid	1.3.6.1.2.1.34.7.1.2.1.1.2	OCTET STRING	not-accessible	The procedure correlation identifier (PCID) of a session. It is an 8-octet value. If this object has the same value as the appnIsInPcid object in the APPN MIB, and if the corresponding ebnIsRscvCpName object has the same value as the corresponding appnIsInFqCpName object, then the entries indexed by these objects are referring to the same session.
OCT ebnIsRscvDestinationRoute	1.3.6.1.2.1.34.7.1.2.1.1.3	OCTET STRING	read-only	The route selection control vector (RSCV x'2B') used in the direction towards the SLU.
STR ebnIsRscvDestinationCos	1.3.6.1.2.1.34.7.1.2.1.1.4	DisplayString	read-only	The Class of Service (COS) name used in the direction towards the SLU. Because the characters allowed in an SNA COS name come from a restricted character set, these names are not subject to internationalization.
ebnDirConfig	1.3.6.1.2.1.34.7.1.3
U32 ebnSearchCacheTime	1.3.6.1.2.1.34.7.1.3.1	Unsigned32	read-only	The amount of time in minutes an extended border node will retain information about a multi-subnetwork search, once that that search terminates. A value 0 indicates that the EBN has no defined limit, and the number of entries is bounded only by memory.
U32 ebnMaxSearchCache	1.3.6.1.2.1.34.7.1.3.2	Unsigned32	read-only	The maximum number of multi-subnet entries to be cached. The value 0 indicates that the local node has no defined limit, and the number of entries is bounded only by memory.
U32 ebnDefaultSubnetVisitCount	1.3.6.1.2.1.34.7.1.3.3	Unsigned32	read-only	The default maximum number of subnetworks a LOCATE search procedure may traverse.
ebnCOS	1.3.6.1.2.1.34.7.1.4
ebnCosMapTable	1.3.6.1.2.1.34.7.1.4.1		not-accessible	The EBN COS Mapping Table. This table specifies how non- native COS values are mapped to COS values defined in the native subnetwork. Note: The COS mappings that an EBN performs are determined by multiple factors, one of which is a set of user-defined initial mappings. This table returns the COS mappings that the EBN is actually performing at the time it is queried, rather than the user-defined initial ones.
ebnCosMapEntry	1.3.6.1.2.1.34.7.1.4.1.1		not-accessible	An entry in the EBN COS Mapping table.
SNA ebnCosMapCpName	1.3.6.1.2.1.34.7.1.4.1.1.1	SnaNAUWildcardName	not-accessible	Fully qualified network CP name for which the COS mapping applies.
STR ebnCosMapNonNativeCos	1.3.6.1.2.1.34.7.1.4.1.1.2	DisplayString	not-accessible	This object contains one of the following values: - An 8-character COS name used in a non-native subnetwork. - The single character '*', identifying the entry with the default native COS for a non-native CP name. This entry is used when there is no entry in the table for a non-native CP name / non-native COS pair. Because the characters allowed in an SNA COS name come from a restricted character set, these names are not subject to internationalization.
STR ebnCosMapNativeCos	1.3.6.1.2.1.34.7.1.4.1.1.3	DisplayString	read-only	An 8-byte name for the class-of-service, as known in the native subnetwork. Because the characters allowed in an SNA COS name come from a restricted character set, these names are not subject to internationalization.
ebnSubnetRoutingList	1.3.6.1.2.1.34.7.1.5
ebnSubnetSearchTable	1.3.6.1.2.1.34.7.1.5.1		not-accessible	This table contains one entry for each fully qualified LU name for which an associated subnet routing list has been defined. An entry in this table contains general characteristics of the subnet search routing list for an LU name. The routing list itself is represented by a set of contiguous entries in the ebnSearchTable.
ebnSubnetSearchEntry	1.3.6.1.2.1.34.7.1.5.1.1		not-accessible	An entry for the ebnSubnetSearchTable. The entry represents the configured parameters the EBN uses when it is determining how to search for the LU identified by the ebnSubnetSearchLuName object.
SNA ebnSubnetSearchLuName	1.3.6.1.2.1.34.7.1.5.1.1.1	SnaNAUWildcardName	not-accessible	Fully qualified network LU name.
INT ebnSubnetSearchDynamics	1.3.6.1.2.1.34.7.1.5.1.1.2	INTEGER	read-only	Indicates whether an EBN may add dynamic entries to a subnetwork routing list. none(1) means no entries may be added to the subnetwork routing list. limited(2) means only likely entries may be added to the subnetwork routing list. full(3) means all native extended border nodes and adjacent, non-native EBNs and NNs will be added to the subnetwork routing list.
INT ebnSubnetSearchOrdering	1.3.6.1.2.1.34.7.1.5.1.1.3	INTEGER	read-only	Indicates whether an EBN may reorder a subnetwork routing list so that entries which are more likely to be successful move to the top of the subnetwork routing list and entries which are more likely to be unsuccessful move to the bottom of the list. The following values are defined: - priority(1): Entries may be reordered. - defined(2): Entries must not be reordered.
ebnSearchTable	1.3.6.1.2.1.34.7.1.5.2		not-accessible	This table indicates the CONFIGURED list of control points to which the EBN sends Locate searches for a given fully qualified LU name. Each entry in the table indicates one control point that should be included in a multi-subnet search for a particular LU name.
ebnSearchEntry	1.3.6.1.2.1.34.7.1.5.2.1		not-accessible	An entry in the ebnSearchTable. An entry can exist in this table only if an entry exists in the ebnSubnetSearchTable with an ebnSubnetSearchLuName value matching this entry's ebnSearchLuName. For a given ebnSearchLuName value, the ordering of entries provides by the ebnSearchIndex values corresponds to the order in which the control points to be searched appear in the CONFIGURED search list for the ebnSearchLuName.
SNA ebnSearchLuName	1.3.6.1.2.1.34.7.1.5.2.1.1	SnaNAUWildcardName	not-accessible	Fully qualified network LU name. If this object has the same value as the ebnSubnetSearchLuName object, then the two objects are referring to the same LU.
U32 ebnSearchIndex	1.3.6.1.2.1.34.7.1.5.2.1.2	Unsigned32	not-accessible	Secondary index enumerating the CONFIGURED order in which a search is forwarded to CPs for a particular LU name. The order for an actual search is determined dynamically by the EBN, based on this configured information and on other factors, including whether search dynamics and search ordering are enabled. Information on these last two settings is available in, respectively, the ebnSubnetSearchDynamics and ebnSubnetSearch ordering objects.
STR ebnSearchCpName	1.3.6.1.2.1.34.7.1.5.2.1.3	DisplayString	read-only	This object specifies the CP(s) to which a search should be forwarded. It either follows the SnaNAUWildcardName textual convention or takes one of the following special formats: '' indicates that all native EBNs and all adjacent non- native EBNs and NNs may be added to the routing list dynamically, 'SELF' indicates that the EBN should search itself and its native subnetwork at this time during the cross-subnet search, '*EBNS' indicates all native EBNs. Because the characters allowed in a CP name come from a restricted character set, and because the three formats listed here use no special characters, this object is not subject to internationalization.
U32 ebnSearchSNVC	1.3.6.1.2.1.34.7.1.5.2.1.4	Unsigned32	read-only	The maximum number of subnets a Locate search procedure may traverse.
hbn	1.3.6.1.2.1.34.7.1.6
hbnIsInTable	1.3.6.1.2.1.34.7.1.6.1		not-accessible	The HBN Intermediate Session table.
hbnIsInEntry	1.3.6.1.2.1.34.7.1.6.1.1		not-accessible	Entry of the HBN Intermediate Session Table. An entry exists in this table for every intermediate session being routed between back-to-back RTP connections in the HBN. When an entry for a session exists in this table, the NceIds and Tcids for the back-to-back RTP connections are made available in the following four objects: RTP connection in the direction of the PLU: - NceId: appnIsInRtpNceId (in the APPN MIB) - Tcid: appnIsinRtpTcid (in the APPN MIB). RTP connection in the direction of the SLU: - NceId: hbnIsInRtpNceId (in this table) - Tcid: hbnIsInRtpTcid (in this table).
NUM hbnIsInFqCpName	1.3.6.1.2.1.34.7.1.6.1.1.1	SnaControlPointName	not-accessible	The network-qualified control point name of the node at which the session and PCID originated. For APPN and LEN nodes, this is either the CP name of the APPN node at which the origin LU is located or the CP name of the NN serving the LEN node at which the origin LU is located. If this object has the same value as the appnIsInFqCpName object in the APPN MIB, then the two objects are referring to the same APPN control point.
OCT hbnIsInPcid	1.3.6.1.2.1.34.7.1.6.1.1.2	OCTET STRING	not-accessible	The procedure correlation identifier (PCID) of a session. It is an 8-octet value. If this object has the same value as the appnIsInPcid object in the APPN MIB, and if the corresponding hbnIsInFqCpName object has the same value as the corresponding appnIsInFqCpName object, then the entries indexed by these objects are referring to the same session.
OCT hbnIsInRtpNceId	1.3.6.1.2.1.34.7.1.6.1.1.3	OCTET STRING	read-only	The HPR local Network Connection Endpoint of the session in the direction of the SLU.
OCT hbnIsInRtpTcid	1.3.6.1.2.1.34.7.1.6.1.1.4	OCTET STRING	read-only	The RTP connection local TCID of the session in the direction of the SLU.
ebnConformance	1.3.6.1.2.1.34.7.2
ebnCompliances	1.3.6.1.2.1.34.7.2.1
ebnCompliance	1.3.6.1.2.1.34.7.2.1.1			The compliance statement for the SNMPv2 entities which implement the ebnMIB.
ebnGroups	1.3.6.1.2.1.34.7.2.2
ebnDirectoryGroup	1.3.6.1.2.1.34.7.2.2.1			The EBN-related directory objects.
ebnIsRscvGroup	1.3.6.1.2.1.34.7.2.2.2			Two objects representing RSCV and class of service information saved by an EBN.
ebnDirectoryConfigGroup	1.3.6.1.2.1.34.7.2.2.3			The EBN Directory Configuration Group.
ebnCosMappingGroup	1.3.6.1.2.1.34.7.2.2.4			The EBN COS Mapping Group.
ebnSubnetRoutingListGroup	1.3.6.1.2.1.34.7.2.2.5			The Subnet Routing List Group.
hbnIsInGroup	1.3.6.1.2.1.34.7.2.2.6			The HBN-related Intermediate Session Objects.

RFC description

Defines managed objects for monitoring and controlling APPN Extended Border Node (EBN) capabilities, supporting topology isolation across SNA subnets.

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Download EBN-MIB

What Is EBN-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description