CISCO-MODULE-VIRTUALIZATION-MIB

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Category: Cisco Devices, Device Management, Hardware and Environment

Description: Manages virtual partitioning of physical line card modules into logical instances on Cisco modular platforms.

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What Is CISCO-MODULE-VIRTUALIZATION-MIB?

CISCO-MODULE-VIRTUALIZATION-MIB is a Cisco enterprise MIB for modular routing and switching platforms that lets a single physical line card module be partitioned into multiple logical virtual contexts, each behaving like an independent device instance. It exposes a virtual-context table for creating, describing, and deleting contexts, along with a mapping table tying physical interfaces to virtual contexts. Its monitoring value lies in configuration and provisioning status of these software-defined partitions rather than raw hardware sensors: administrators track context row status, resource class, and interface-to-context mapping to confirm virtual instances are correctly provisioned and interfaces assigned as intended. It relies on standard SNMP row-creation conventions (RowStatus, StorageType) and is tightly coupled to the physical module/entity model of the chassis. It is deployed on large Cisco modular chassis platforms where a module needs to be logically split into multiple virtual routing/switching instances. Engineers can download the CISCO-MODULE-VIRTUALIZATION-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-MODULE-VIRTUALIZATION-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

Cisco modular router/switch (chassis-based)

Monitoring Examples

An administrator would walk cmVirtualContextTable/cmVirtualContextEntry to check cmVirtContextName, cmVirtContextDescr, and cmVirtContextRowStatus to confirm each virtual context is created and active, and inspect cmVirtContextResourceClass to see its assigned resource tier. Cross-referencing cmVirtContextIfMapTable/cmVirtContextIfMapEntry with cmVirtContextIfMapType and cmVirtContextIfMapIdLow would verify that specific physical interfaces are correctly bound to the intended virtual context. A context stuck in a non-active RowStatus, or an interface missing from the IfMap table, would indicate an incomplete or failed virtualization provisioning step.

What Can Be Monitored

virtual context name/description
virtual context row status
resource class assignment
interface-to-virtual-context mapping

Imported Objects

From CISCO-L4L7MODULE-RESOURCE-LIMIT-MIB

CiscoResourceClass

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From CISCO-TC

CiscoURLString

From ENTITY-MIB

entPhysicalIndex

OBJECT-TYPE

From IANAifType-MIB

IANAifType

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

From RFC1155-SMI

Gauge

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-TC-v1

RowStatus
StorageType
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoModuleVirtualizationMIB	1.3.6.1.4.1.9.9.472
cmVirtualizationNotifs	1.3.6.1.4.1.9.9.472.0
NTF cmVirtContextAdded	1.3.6.1.4.1.9.9.472.0.1			This notifications will be sent when a virtual context is added.
NTF cmVirtContextRemoved	1.3.6.1.4.1.9.9.472.0.2			This notifications will be sent when a virtual context is removed/deleted.
cmVirtualizationMIBObjects	1.3.6.1.4.1.9.9.472.1
cmVirtualContext	1.3.6.1.4.1.9.9.472.1.1
cmVirtualContextTable	1.3.6.1.4.1.9.9.472.1.1.1		not-accessible	This is the virtual context table. A virtual context can be created for a module. This table is used for creating/deleting virtual contexts. The entries can be created/deleted by SNMP and/or by console commands.
cmVirtualContextEntry	1.3.6.1.4.1.9.9.472.1.1.1.1		not-accessible	An entry in virtual context table. Each entry provides information about a particular virtual context. To create a virtual context, following procedure is used: - choose the appropriate value for entPhysicalIndex to point to an entry(with entPhysicaClass = 'module') in entPhysicalTable. - specify the name of the virtual context. - create an entry in the table by specifying ciscoVirtualContextRowStatus value of 'createAndGo' or 'createAndWait'. One or more virtual contexts can be created in a module. Each of these contexts are identified by a unique name. Resources can be assigned/mapped to each virtual context. Configurations and Monitoring can be done each virtual context independent of each other. Configuration changes in one virtual context will not affect other.
STR cmVirtContextName	1.3.6.1.4.1.9.9.472.1.1.1.1.1	SnmpAdminString	not-accessible	This object uniquely identifies a virtual context.
STR cmVirtContextDescr	1.3.6.1.4.1.9.9.472.1.1.1.1.2	SnmpAdminString	read-write	This object is used for configuring the description of virtual context.
STR cmVirtContextURL	1.3.6.1.4.1.9.9.472.1.1.1.1.3	CiscoURLString	read-write	This object is used for configuring the URL from which virtual context configuration will be downloaded. The configuration contains information on anything that is configured in a virtual context. Some examples of possible values for this object are: disk://[path/]filename ftp://[user[:password]@]server/[path/]filename tftp://server/[path/]filename http://server/[path/]filename https://server/[path/]filename. NOTE: Above list is just an example. It does not specify/limit only these values to be supported.
CIS cmVirtContextResourceClass	1.3.6.1.4.1.9.9.472.1.1.1.1.4	CiscoResourceClass	read-write	This object is used for assigning a resource class to a context. The resource class contains information on the resources that are managed/applicable to a context. The type of resources that may be applicable are governed by the CiscoResourceClass TEXTUAL CONVENTION. This object value must correspond to an entry in cmResourceClassTable.
STO cmVirtContextStorageType	1.3.6.1.4.1.9.9.472.1.1.1.1.5	StorageType	read-write	The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row.
ROW cmVirtContextRowStatus	1.3.6.1.4.1.9.9.472.1.1.1.1.6	RowStatus	read-write	This object is used for creating/deleting entries in this table.
cmVirtContextIfMapTable	1.3.6.1.4.1.9.9.472.1.1.2		not-accessible	This table is used for assigning interfaces to a virtual context. This table will configure the set of interfaces that can be used by a virtual context.
cmVirtContextIfMapEntry	1.3.6.1.4.1.9.9.472.1.1.2.1		not-accessible	An entry in Interface Map table. Each entry represents the interface or interface range that are assigned to a virtual context.
IAN cmVirtContextIfMapType	1.3.6.1.4.1.9.9.472.1.1.2.1.1	IANAifType	not-accessible	This object specifies the interface type for which cmVirtContextIfMapIdHigh and cmVirtContextIfMapIdLow are applicable.
GAU cmVirtContextIfMapIdLow	1.3.6.1.4.1.9.9.472.1.1.2.1.2	Gauge	not-accessible	This object specifies the interface that can be assigned to a context. This object either represents an interface or lower value of the interface range.
GAU cmVirtContextIfMapIdHigh	1.3.6.1.4.1.9.9.472.1.1.2.1.3	Gauge	read-write	This object specifies the interface that will be assigned to a virtual context. The non-zero value specifies the upper value of the interface range. This value must be greater than the value in cmVirtContextIfMapIdLow. The value zero specifies that value specified in cmVirtContextIfMapIdLow is assigned.
STO cmVirtContextIfMapStorageType	1.3.6.1.4.1.9.9.472.1.1.2.1.4	StorageType	read-write	The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row.
ROW cmVirtContextIfMapRowStatus	1.3.6.1.4.1.9.9.472.1.1.2.1.5	RowStatus	read-write	This object is used for creating/deleting entries in this table.
cmVirtualContextNotifControl	1.3.6.1.4.1.9.9.472.1.2
T/F cmVirtContextNotifEnable	1.3.6.1.4.1.9.9.472.1.2.1	TruthValue	read-write	This object is used for enabling/disabling notifications related to virtual context.
cmVirtualContextNotifObjects	1.3.6.1.4.1.9.9.472.1.3
STR cmNotifVirtContextName	1.3.6.1.4.1.9.9.472.1.3.1	SnmpAdminString	not-accessible	This object is used in notifications only. This object contains the virtual context name. (i.e. value of cmVirtContextName).
cmVirtualizationMIBConformance	1.3.6.1.4.1.9.9.472.2
cmVirtualizationCompliances	1.3.6.1.4.1.9.9.472.2.1
cmVirtualizationCompliance	1.3.6.1.4.1.9.9.472.2.1.1
cmVirtualizationGroups	1.3.6.1.4.1.9.9.472.2.2
cmVirtContextconfigGroup	1.3.6.1.4.1.9.9.472.2.2.1
cmVirtContextIfMapGroup	1.3.6.1.4.1.9.9.472.2.2.2
cmVirtContextNotifControlGroup	1.3.6.1.4.1.9.9.472.2.2.3
cmVirtContextNotifObjectsGroup	1.3.6.1.4.1.9.9.472.2.2.4
cmVirtContextNotificationGroup	1.3.6.1.4.1.9.9.472.2.2.5

RFC description

Manages creation and administration of virtual contexts on Cisco L4-L7 modules, enabling logical partitioning with independent configurations.

Start monitoring Cisco modular router/switch (chassis-based) 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 CISCO-MODULE-VIRTUALIZATION-MIB

What Is CISCO-MODULE-VIRTUALIZATION-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description