CXLlcLanConv-MIB

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Category: Domain: SNA/Legacy, Vendor: Memotec

Description: Manages LLC-to-LAN protocol conversion for bridging SNA traffic on CX Memotec devices.

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What Is CXLlcLanConv-MIB?

CXLlcLanConv-MIB is a vendor-specific Aastra/Memotec (CX) MIB that manages LLC-to-LAN protocol conversion, used for bridging SNA (IBM mainframe) traffic across LAN/WAN boundaries on CX devices. Its object set is narrow, focused on the SAP table used for this conversion function and a MIB-level identifier. In terms of hardware/software status monitoring, it is used mainly to confirm the LLC SAP conversion entries are correctly provisioned, which helps diagnose SNA session establishment failures or bridging misconfiguration between LAN and WAN segments; cxLlcLanConvMibLevel indicates which feature set the running firmware supports. It relies conceptually on IEEE 802.2 LLC and IBM SNA framing standards that the conversion function bridges between. It is typically deployed in legacy enterprise environments still running SNA traffic over modern LAN/WAN infrastructure via an Aastra CX gateway. Network engineers evaluating or troubleshooting this functionality can download the CXLlcLanConv-MIB file directly to load it into their MIB browser.

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

Aastra ConvertedX (CX) SNA/LAN bridging gateway

Monitoring Examples

An operator would inspect llcLanSapTable to verify the SAP mappings used to convert LLC frames for LAN-to-WAN SNA bridging are correctly configured, particularly after adding a new SNA device to the network. cxLlcLanConvMibLevel would be checked to confirm feature compatibility before attempting to configure additional SAP entries. Given the small object count, this MIB serves as a targeted configuration-verification tool rather than a general traffic-statistics source.

What Can Be Monitored

LLC-to-LAN SAP table entries
MIB feature support level

Imported Objects

From CXProduct-SMI

Alias
SapIndex
cxLlcLanConv	OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter

OIDs

OID symbolic	OID numeric	Type	Access	Description
llcLanSapTable	1.3.6.1.4.1.495.2.1.6.47.10		not-accessible	A table containing configuration information about each LLC-2 LAN Service Access Point.
llcLanSapEntry	1.3.6.1.4.1.495.2.1.6.47.10.1		not-accessible	The parameters for a particular LLC-2 LAN Service Access Point.
SAP llcLanSapNumber	1.3.6.1.4.1.495.2.1.6.47.10.1.1	SapIndex	read-only	Identifies the Service Access Point by a numerical value. Values are unique per Service Access Point.
INT llcLanSapRowStatus	1.3.6.1.4.1.495.2.1.6.47.10.1.2	INTEGER	read-write	Indicates whether the particular Service Access Point is configured within the MIB. Service Access Point entries (rows) may be created by setting this object value to 'valid', or deleted by changing this object value to 'invalid'. Whether or not the row actually disappears is left to the implementation so this object may actually read as 'invalid' for some arbitrary length of time.
ALI llcLanSapAlias	1.3.6.1.4.1.495.2.1.6.47.10.1.3	Alias	read-write	Identifies the Service Access Point by a textual name. Names are unique per Service Access Point.
ALI llcLanSapCompanionAlias	1.3.6.1.4.1.495.2.1.6.47.10.1.4	Alias	read-write	Identifies the LAN Service Access Point which provides LAN services for this LLC-2 LAN SAP. Different LLC-2 SAPs may use the same Companion Alias provided that they use a different llcLanSapRemoteAddress or llcLanSapSrcLlcSap/ llcLanSapDstLlcSap pair.
MAC llcLanSapRemoteAddress	1.3.6.1.4.1.495.2.1.6.47.10.1.5	MacAddress	read-write	This object specifies the MAC address of the remote LAN station to which the LLC-2 LAN connection will be established.
INT llcLanSapSrcLlcSap	1.3.6.1.4.1.495.2.1.6.47.10.1.6	INTEGER	read-write	Identifies the source LLC-2 SAP address associated with the connection. Only even values are allowed.
INT llcLanSapDstLlcSap	1.3.6.1.4.1.495.2.1.6.47.10.1.7	INTEGER	read-write	Identifies the destination LLC SAP address associated with the connection. Only even values are allowed.
INT llcLanSapControl	1.3.6.1.4.1.495.2.1.6.47.10.1.8	INTEGER	write-only	Control associated with the specified service access point. When set to 'clearStats, statistics counters are reset to zero.
INT llcLanSapState	1.3.6.1.4.1.495.2.1.6.47.10.1.9	INTEGER	read-only	Indicates the current SAP state. This object is a bit map which represents the different SAP status: Type of Status llcLanSapState Object Value Hex Decimal SAP Offline 0x01 001 SAP Unbound from LAPBD 0x02 002 SAP Bound from LAPBD 0x04 004 SAP Connected from LAPBD 0x08 008 SAP Binding to LAN Driver 0x40 064 SAP Bound to LAN Driver 0x80 128 In data transfer mode, the value of this object should be: 128 + 8 + 4 = 140 The SAP is 'offLine' if it is not configured at the layer (i.e. just added to the configuration).
CTR llcLanSapTxFrames	1.3.6.1.4.1.495.2.1.6.47.10.1.10	Counter	read-only	Indicates the number of frames sent from this Service Access Point.
CTR llcLanSapRxFrames	1.3.6.1.4.1.495.2.1.6.47.10.1.11	Counter	read-only	Indicates the number of frames received at this Service Access Point.
CTR llcLanSapTxOctets	1.3.6.1.4.1.495.2.1.6.47.10.1.12	Counter	read-only	Indicates the number of octets sent from this Service Access Point.
CTR llcLanSapRxOctets	1.3.6.1.4.1.495.2.1.6.47.10.1.13	Counter	read-only	Indicates the number of octets received at this Service Access Point.
MAC llcLanSapLocalAddress	1.3.6.1.4.1.495.2.1.6.47.10.1.19	MacAddress	read-write	This object specifies the (Virtual/Real) MAC address of the local LAN port to which the LLC-2 layer will bind. LLC-2 will send the value of this object as Virtual MAC Address to LAN driver in the BindReq message ONLY if it is NOT 0x00000000. The final value of this object will be the MAC address provided by lower local LAN driver in BindConfirm message. Default value: 0x0000000000000000.
INT llcLanSapPhysicalInterface	1.3.6.1.4.1.495.2.1.6.47.10.1.20	INTEGER	read-write	Identifies the type of physical interface that this Service Access Point uses. Options ethernet (1) tokenring (2)
INT cxLlcLanConvMibLevel	1.3.6.1.4.1.495.2.1.6.47.20	INTEGER	read-only	Used to determine current MIB module release supported by the agent. Object is in decimal.

RFC description

Manages LLC-2 LAN Service Access Point configuration, statistics, and control for Conexant systems.

Start monitoring Aastra ConvertedX (CX) SNA/LAN bridging gateway with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download CXLlcLanConv-MIB

What Is CXLlcLanConv-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description