CXOperatingSystem-MIB

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Category: Domain: System Management, Vendor: Memotec

Description: Monitors OS-level resources including CPU, memory, and task status on CX Memotec devices.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is CXOperatingSystem-MIB?

CXOperatingSystem-MIB is a CX Memotec MIB exposing low-level operating system resource statistics for the embedded OS running on Memotec devices, focused on internal buffer pool and system message queue management. It exposes objects reporting the total number of OS buffers, buffer size, available/free buffer counts, and system message queue occupancy/availability, along with general OS parameter/option settings. This is directly a hardware/software health MIB: buffer exhaustion (free buffer count dropping toward zero) or message queue saturation are classic embedded-OS symptoms of overload, memory pressure, or a software fault, making these objects key early-warning indicators for a device under stress. It is a vendor-private MIB without dependency on standard OS-resource MIBs like HOST-RESOURCES-MIB, being specific to the Memotec embedded architecture. It is deployed on Memotec network devices in telecom/enterprise WAN environments, where CXOperatingSystem-MIB SNMP monitoring is polled by NMS platforms for capacity and stability tracking.

IPNetwork Monitor allows you to monitor SNMP objects defined in CXOperatingSystem-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 network device

Monitoring Examples

An operator polling cxOsNbBufsFree relative to cxOsNbBufs would detect buffer pool exhaustion, a common precursor to packet drops or device instability on a heavily loaded Memotec unit. Similarly, cxOsNbSystemMsgFree trending toward zero against cxOsNbSystemMsg indicates the internal message queue is saturating, signaling a software processing bottleneck or stuck task. cxOsBufSize confirms the configured buffer size, useful context when correlating buffer exhaustion with traffic volume.

What Can Be Monitored

OS buffer pool total/free/available count
buffer size
system message queue occupancy/free count
OS configuration parameters

Imported Objects

From CXProduct-SMI

cxOperatingSystem

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
cxOsParameter	1.3.6.1.4.1.495.2.1.5.5.1
INT cxOsNbBufs	1.3.6.1.4.1.495.2.1.5.5.1.1	INTEGER	read-write	Determines the total number of data buffers to be created within the system. System heap memory is reduced as the number of buffers is increased. Range of Values: Depends on amount of installed system DRAM, as well as on requirements made by software during initialization. Cannot be set to a value larger than the one chosen for object cxOsNbSystemMsg. Default Value: 1200
INT cxOsBufSize	1.3.6.1.4.1.495.2.1.5.5.1.2	INTEGER	read-write	Determines the size in bytes of each data buffer. Range of Values: 1 to 65535 Note: The maximum usable size depends on amount of installed system DRAM, as well as on requirements made by software during initialization. Default Value: 292.
INT cxOsNbBufsAvail	1.3.6.1.4.1.495.2.1.5.5.1.3	INTEGER	read-only	Displays the number of data buffers that has actually been created. If you want to change the number of buffers you must change cxOsNbBufs. Range of Values: Depends on amount of installed system DRAM, as well as on requirements made by software during initialization.
INT cxOsNbBufsFree	1.3.6.1.4.1.495.2.1.5.5.1.4	INTEGER	read-only	Displays the number of data buffers that are currently free within the system. Range of Values: Depends on amount of installed system DRAM, as well as on requirements made by software during initialization.
INT cxOsNbSystemMsg	1.3.6.1.4.1.495.2.1.5.5.1.16	INTEGER	read-write	Determines the number of message buffers defined in the system. One or more data buffers may be attached to a message buffer. Cannot be set to a value smaller than the value of object cxOsNbBufs. Range of Values: from the total number of buffers in the system to 65535 Default Value: 1320
INT cxOsNbSystemMsgFree	1.3.6.1.4.1.495.2.1.5.5.1.17	INTEGER	read-only	Displays the number of message buffers currently free in the system. Range of Values:from the total number of buffers in the system to 65535.
INT cxOsOptions	1.3.6.1.4.1.495.2.1.5.5.1.18	INTEGER	read-write	Used for engineering testing only. Used to control data cache, instruction cache and pipeline features. Default value: p-data-inst

RFC description

Customizes internal system operation parameters including buffer allocation and memory management on CX network systems.

Start monitoring CX Memotec network device (embedded OS resource stats) 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 CXOperatingSystem-MIB

What Is CXOperatingSystem-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description