CXLLCInterfaceModule-MIB

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Category: Domain: SNA/Legacy, Vendor: Memotec

Description: Manages LLC (Logical Link Control) interface module configuration on CX Memotec devices.

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What Is CXLLCInterfaceModule-MIB?

CXLLCInterfaceModule-MIB is a CX Memotec MIB managing an LLC (Logical Link Control, IEEE 802.2) interface module, which provides connection-oriented Layer 2 framing used by legacy protocols such as SNA over LAN. It exposes a per-SAP configuration table (channel number, alias, companion alias, connect method, type) along with connection interval timing and row status/state objects. For monitoring it is used to confirm each LLC SAP is in its expected connection state and correctly paired via its companion alias, revealing a SAP that has failed to establish its LLC connection or is misconfigured relative to its intended companion, which is a software/link-layer status concern for the module rather than a physical hardware metric. It depends on the IEEE 802.2 LLC standard for its underlying framing model and interoperates with related CX protocol modules such as CXQLLC-MIB for SNA transport over the LLC layer. It is deployed on CX Memotec/Aastra WAN gateway devices providing LLC-based legacy protocol interworking. Engineers can download the CXLLCInterfaceModule-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CXLLCInterfaceModule-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

CX Memotec/Aastra WAN gateway with LLC interface module

Monitoring Examples

An administrator would poll llcimSapTable/llcimSapEntry indexed by llcimSapNumber to check llcimSapState and llcimSapConnectMethod, confirming a given LLC SAP has successfully connected using its configured method. The llcimSapAlias and llcimSapCompanionAlias would be compared to verify correct channel pairing, and llcimSapRowStatus would confirm the SAP row is active. The llcimConnectInterval scalar would be reviewed if a SAP is repeatedly retrying its connection, since a short interval combined with a non-connected llcimSapState suggests a persistent link-layer negotiation failure.

What Can Be Monitored

LLC SAP connection state
SAP-to-companion alias pairing
SAP connect method configuration
connect retry interval

Imported Objects

From CXProduct-SMI

Alias
cxLlcim	OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
INT llcimConnectInterval	1.3.6.1.4.1.495.2.1.6.34.1	INTEGER	read-write	Determines the amount of time between LLC-2 XID or TEST retries. Range of Values: 10 - 900 seconds Default Value: 30 seconds Configuration Changed: administrative
llcimSapTable	1.3.6.1.4.1.495.2.1.6.34.10		not-accessible	A table containing configuration information about each LLC-2 Interface Module service access point.
llcimSapEntry	1.3.6.1.4.1.495.2.1.6.34.10.1		not-accessible	Defines a row in the llcimSapTable. Each row contains the objects which define an LLC-2 service access point.
INT llcimSapNumber	1.3.6.1.4.1.495.2.1.6.34.10.1.1	INTEGER	read-only	Identifies this SAP (service access point) with a numerical value. Values for each SAP must be unique. A value of '0' is automatically allocated to the first LLCIM upper SAP. This upper SAP row always exists and cannot be deleted.
INT llcimSapRowStatus	1.3.6.1.4.1.495.2.1.6.34.10.1.2	INTEGER	read-write	Determines the status of the objects in a table row. Options: invalid (1): Row is flagged, after next reset the values will be disabled and the row is deleted from the table valid (2): Values are enabled Default Value: none Configuration Changed: administrative
ALI llcimSapAlias	1.3.6.1.4.1.495.2.1.6.34.10.1.3	Alias	read-write	Identifies this service access point by a textual name. Names must be unique across all service access points at all layers. Range of Values: 1 -16 alphanumeric characters (first character must be a letter) Default Value: none Configuration Changed: administrative
ALI llcimSapCompanionAlias	1.3.6.1.4.1.495.2.1.6.34.10.1.4	Alias	read-write	Determines the remote SAP this SAP communicates with. This object contains the textual name of the remote SAP. If this object is associated with a lower SAP, this object is set to the value of the corresponding LAPB/D MAC SAP Alias (lapbdMacSapAlias). The LAPB/D SAP must have the following objects defined as follows: labpdMacSapLapType set to 'lapb' lapbdMacSapLapBProtocolFlavor set to 'v8022' Range of Values: 1 -16 alphanumeric characters (first character must be a letter) Default Value: none Configuration Changed: administrative
INT llcimSapType	1.3.6.1.4.1.495.2.1.6.34.10.1.5	INTEGER	read-write	Determines if this SAP (service access point) is an upper or lower SAP. Options: lower (1): This is a lower SAP, used to communicate with a LAPB/D MAC SAP. upper (2): This is an upper SAP, used to communicate with an upper layer service. Default Value: lower (1) Configuration Changed: administrative
INT llcimSapConnectMethod	1.3.6.1.4.1.495.2.1.6.34.10.1.6	INTEGER	read-write	Determines if the NULL XID exchange used to establish an LLC link is initiated by this station or by the remote station. Options: generateXid (1): This station initiates the NULL XID exchange. waitForXid (2): This station waits for the other side to initiate the NULL XID exchange. Default Value: generateXid (1) Configuration Changed: administrative and operative
INT llcimSapState	1.3.6.1.4.1.495.2.1.6.34.10.1.7	INTEGER	read-only	Indicates the state of this service access point. Options: offLine (1): Indicates that the SAP is not configured. unbound (2): Indicates that this SAP is not bound to its companion SAP. notConnected (3): Indicates that the link is idle. testExchange (4): Indicates that the TEST exchange is ongoing. xidIssued (5): Indicates that this SAP has sent a NULL XID. waitXid (6): Indicates that this SAP is waiting for the remote to send a NULL XID. connected (7): Indicates that the link is established (TEST and XID exchanges has been successfully completed). setMode (8): Indicates that this SAP has sent a Set Mode command to the remote. waitSetMode (9): Indicates that this SAP is waiting for a Set Mode command from the remote. setModeReceived (10): Indicates that this SAP has received a Set Mode command from the remote. data (11): Indicates that data exchange mode has been reached. inLinkDisconnect (12): Indicates that the link has been disconnected (a DISC was received from the remote). outLinkDisconnect (13): Indicates that the link has been disconnected (a DISC was sent to the remote). outLineDisconnect (14) Indicates that the connection to the remote is being terminated.

RFC description

Manages LLC-2 service access points and data link layer connectivity for Conexant network modules.

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Download CXLLCInterfaceModule-MIB

What Is CXLLCInterfaceModule-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description