All MIBs › MEGACO-MIB
Organization: IETF
Last Updated: 2003--0-4-
Description: MEGACO-MIB module
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What Is MEGACO-MIB?
This is a standards-based MIB for the Media Gateway Control Protocol (Megaco/H.248), used in managing signaling relationships between media gateways and media gateway controllers in VoIP/telecom media-gateway technology. The module description names only the protocol itself, and no sample objects were extracted for this excerpt, so its exact object structure cannot be detailed here, though such MIBs typically expose gateway/controller association, protocol version, and message/context counters. In general this class of MIB supports monitoring of protocol/software status such as active Megaco control associations and message statistics rather than physical hardware sensors. It is defined by the IETF as a companion MIB to the Megaco/H.248 protocol, used alongside other call-control and gateway management MIBs. It would be deployed on telecom media gateways and media gateway controllers (softswitches) in VoIP/PSTN gateway infrastructure. Engineers implementing or auditing this functionality typically reference the MEGACO-MIB RFC/standard documentation for the authoritative specification.
IPNetwork Monitor allows you to monitor SNMP objects defined in MEGACO-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
- vendor-neutral, standards-based MIB, not tied to a specific manufacturer
- media gateway / media gateway controller (VoIP telecom equipment)
Monitoring Examples
No object or table names were available in this excerpt (sample_objects is empty), so a grounded polling scenario cannot be constructed; in general, such a MIB would be used to confirm a media gateway's Megaco control association to its controller is active and to track protocol message counters when a gateway loses control-plane connectivity.
This MIB depends on
Related MIBs
Imported Objects
From IF-MIB
| InterfaceIndex |
From SNMP-FRAMEWORK-MIB
| SnmpAdminString |
From SNMPv2-CONF
| MODULE-COMPLIANCE | |
| NOTIFICATION-GROUP | |
| OBJECT-GROUP |
From SNMPv2-SMI
| Integer32 | |
| IpAddress | |
| MODULE-IDENTITY | |
| NOTIFICATION-TYPE | |
| OBJECT-TYPE | |
| Unsigned32 | |
| mib-2 |
From SNMPv2-TC
| AutonomousType | |
| RowStatus | |
| TEXTUAL-CONVENTION | |
| TestAndIncr | |
| TimeStamp |
OIDs
| OID symbolic | OID numeric | Type | Access | Description |
|---|---|---|---|---|
| megacoMib | 1.3.6.1.2.1.0 | Media Gateway Control (Megaco) Management Information Base (MIB) | ||
| mediaGatewayMIBObjects | 1.3.6.1.2.1.0.1 | |||
| medGwyConfiguration | 1.3.6.1.2.1.0.1.1 | |||
| medGwyLinkIdTable | 1.3.6.1.2.1.0.1.1.1 | not-accessible | This table contains a nextLinkId for each Gateway. It provides the manager with the nextLinkId for use in creating new Gateway Table Entries. | |
| medGwyLinkIdEntry | 1.3.6.1.2.1.0.1.1.1.1 | not-accessible | This table contains the NextLinkId for this Gateway and is indexed by mediaGatewayId. | |
| TES medGwyNextLinkId | 1.3.6.1.2.1.0.1.1.1.1.1 | TestAndIncr | read-write | The Next Value for a MediaGateway LinkId. Assists the manager in selecting a value for medGwyGatewayLinkId. Using the TestAndIncr syntax, A Manager will 'lock' this variable, ensuring single access. |
| medGwyGatewayConfigTable | 1.3.6.1.2.1.0.1.1.2 | not-accessible | A list of medGwyGatewayConfigEntry objects. | |
| medGwyGatewayConfigEntry | 1.3.6.1.2.1.0.1.1.2.1 | not-accessible | Entry holding configuration information about a group of Media Gateway Controllers sharing the same signaling link. | |
| MED medGwyGatewayId | 1.3.6.1.2.1.0.1.1.2.1.1 | MediaGatewayId | not-accessible | The unique Media Gateway Id which identifies this media gateway |
| MED medGwyGatewayLinkId | 1.3.6.1.2.1.0.1.1.2.1.2 | MediaGatewayLinkId | not-accessible | The unique link id which identifies the signalling link that this gateway uses to communicate with the Gateway Controller(s). |
| OCT medGwyGatewayLinkName | 1.3.6.1.2.1.0.1.1.2.1.3 | OCTET STRING | read-create | A descriptive name of this signalling link / media gateway combination |
| IP medGwyGatewayIPAddress | 1.3.6.1.2.1.0.1.1.2.1.4 | IpAddress | read-create | The IP address that the Media Gateway Controller will use to communicate with the Media Gateway. The value 0.0.0.0 is returned if the entry is invalid. |
| I32 medGwyGatewayPort | 1.3.6.1.2.1.0.1.1.2.1.5 | Integer32 | read-create | TCP/UDP port number that the Media Gateway Controller will use to communiacte with the Media Gateway. The value 0 is returned if the entry is invalid. |
| INT medGwyGatewayEncodingScheme | 1.3.6.1.2.1.0.1.1.2.1.6 | INTEGER | read-create | The encoding scheme that would be used to encode the Megaco messages that are sent/received to/from the gateway controller |
| INT medGwyGatewayProtocol | 1.3.6.1.2.1.0.1.1.2.1.7 | INTEGER | read-create | Type of the control protocol in use. |
| INT medGwyGatewaySignalingTptProtocol | 1.3.6.1.2.1.0.1.1.2.1.8 | INTEGER | read-create | Type of the transport protocol that is being used to transport the megaco signalling traffic |
| INT medGwyGatewayAdminStatus | 1.3.6.1.2.1.0.1.1.2.1.9 | INTEGER | read-create | The desired state of the gateway. The testing(3) state indicates that no signalling packets can be passed. When a managed system initializes, all gateways start with medGwyGatewayAdminStatus in the down(2) state. As a result of either explicit management action or per configuration information retained by the managed system, medGwyGatewayAdminStatus is then changed to either the up(1) or testing(3) states (or remains in the down(2) state). |
| INT medGwyGatewayOperStatus | 1.3.6.1.2.1.0.1.1.2.1.10 | INTEGER | read-only | The current operational state of the gateway. The testing(3) state indicates that no signalling packets can be passed. If medGwyGatewayAdminStatus is down(2) then medGwyGatewayOperStatus should be down(2). If medGwyGatewayAdminStatus is changed to up(1) then medGwyGatewayOperStatus should change to up(1) if the gateway is ready to transmit and receive signalling traffic; it should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state |
| TIM medGwyGatewayLastStatusChange | 1.3.6.1.2.1.0.1.1.2.1.11 | TimeStamp | read-only | The value of sysUpTime at the time the associated link entered its current operational status. If the current status was entered prior to the last re-initialization of the local network management subsystem, then this object contains a zero value. |
| INT medGwyGatewayResetStatistics | 1.3.6.1.2.1.0.1.1.2.1.12 | INTEGER | read-create | This object can be used to reset all statistics collected for this media gateway link so far. Statistics will be reset when the object is SET to 'reset'. Upon reset, the agent changes the value of this object to 'notApplicable'. |
| ROW medGwyGatewayRowStatus | 1.3.6.1.2.1.0.1.1.2.1.13 | RowStatus | read-create | This is used to create new rows in this table, Modify existing rows, and to delete existing rows. |
| medGwyGatewayControllerTable | 1.3.6.1.2.1.0.1.1.3 | not-accessible | List of the Media Gateway Controllers that are managed in the network | |
| medGwyGatewayControllerEntry | 1.3.6.1.2.1.0.1.1.3.1 | not-accessible | Entry holding information about an individual Media Gateway Controller. | |
| U32 medGwyGatewayControllerId | 1.3.6.1.2.1.0.1.1.3.1.1 | Unsigned32 | not-accessible | An unique identification number that is assigned to the gateway controller by the manager |
| IP medGwyGatewayControllerIPAddress | 1.3.6.1.2.1.0.1.1.3.1.2 | IpAddress | read-write | The IP address of the Media Gateway Controller. The value 0.0.0.0 is returned if the entry is invalid. |
| I32 medGwyGatewayControllerPort | 1.3.6.1.2.1.0.1.1.3.1.3 | Integer32 | read-write | TCP port of the Media Gateway Controller. The value 0 is returned if the entry is invalid. |
| INT medGwyGatewayControllerAdminStatus | 1.3.6.1.2.1.0.1.1.3.1.4 | INTEGER | read-create | The desired state of the gateway. The testing(3) state indicates that no signalling packets can be passed. When a managed system initializes, all gateways start with medGwyGatewayControllerAdminStatus in the down(2) state. As a result of either explicit management action or per configuration information retained by the managed system, medGwyGatewayControllerAdminStatus is then changed to either the up(1) or testing(3) states (or remains in the down(2) state). |
| INT medGwyGatewayControllerOperStatus | 1.3.6.1.2.1.0.1.1.3.1.5 | INTEGER | read-only | The current operational state of the gateway controller. The standby(3) state indicates that it is in the standby mode and no signalling packets can be passed. If medGwyGatewayControllerAdminStatus is down(2) then medGwyGatewayControllerOperStatus should be down(2). If medGwyGatewayControllerAdminStatus is changed to up(1) then medGwyGatewayControllerOperStatus should change to up(1) if the gateway contoller is ready to transmit and receive signalling traffic; it should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state |
| medGwyStatistics | 1.3.6.1.2.1.0.1.2 | |||
| medGwyGatewayStatsTable | 1.3.6.1.2.1.0.1.2.1 | not-accessible | A list of mediaGatewayTableEntry objects. | |
| medGwyGatewayStatsEntry | 1.3.6.1.2.1.0.1.2.1.1 | not-accessible | Entry holding statistics about a group of media Gateway/signalling link pair | |
| U32 medGwyGatewayNumInMessages | 1.3.6.1.2.1.0.1.2.1.1.1 | Unsigned32 | read-only | Total number of messages received on the link. |
| U32 medGwyGatewayNumInOctets | 1.3.6.1.2.1.0.1.2.1.1.2 | Unsigned32 | read-only | Total number of octets received on the link. |
| U32 medGwyGatewayNumOutMessages | 1.3.6.1.2.1.0.1.2.1.1.3 | Unsigned32 | read-only | Total number of messages sent on the link. |
| U32 medGwyGatewayNumOutOctets | 1.3.6.1.2.1.0.1.2.1.1.4 | Unsigned32 | read-only | Total number of octets sent on the link. |
| U32 medGwyGatewayNumErrors | 1.3.6.1.2.1.0.1.2.1.1.5 | Unsigned32 | read-only | Total number of signaling-level errors encountered. Includes, but is not limited to, number of bad messages received, number of failures to sent a message and number of other errors. |
| U32 medGwyGatewayNumTimerRecovery | 1.3.6.1.2.1.0.1.2.1.1.6 | Unsigned32 | read-only | Total Number of timer recovery events since the statistics was last reset. This reflects all protocol timers that are supported (For Megaco, T - start timer, S - short timer, L - long timer, and Z - long duration timer etc) |
| U32 medGwyGatewayTransportNumLosses | 1.3.6.1.2.1.0.1.2.1.1.7 | Unsigned32 | read-only | Number of times a transport link was lost (excluding switch-over cases). A link loss is defined as loss of communication with the entity (MGC) due to hardware/transient problems in the interface or other related hardware/software |
| U32 medGwyGatewayTransportNumSwitchover | 1.3.6.1.2.1.0.1.2.1.1.8 | Unsigned32 | read-only | Number of times when the signaling was switched over to an alternative link. This includes switchover due to the Handoffs initiated by the gateway controllers |
| U32 medGwyGatewayTransportTotalNumAlarms | 1.3.6.1.2.1.0.1.2.1.1.9 | Unsigned32 | read-only | Total number of all alarms issued for the transport layer. |
| INT medGwyGatewayTransportLastEvent | 1.3.6.1.2.1.0.1.2.1.1.10 | INTEGER | read-only | Last event reported by the transport layer. |
| TIM medGwyGatewayTransportLastEventTime | 1.3.6.1.2.1.0.1.2.1.1.11 | TimeStamp | read-write | The value of sysUpTime at the time when the event specified by mediaGatewayTransportLastEvent occured. If the last event occured prior to the last re-initialization of the local network management subsystem, then this object contains a zero value. |
| TIM medGwyGatewayLastStatisticsReset | 1.3.6.1.2.1.0.1.2.1.1.12 | TimeStamp | read-only | The value of sysUpTime at the time when the statistics were reset. If the reset occured prior to the last re-initialization of the local network management subsystem, this object contains a zero value. |
| medGwyConnections | 1.3.6.1.2.1.0.1.3 | |||
| medGwyTermIdTable | 1.3.6.1.2.1.0.1.3.1 | not-accessible | This table contains a nextTerminationId for each Gateway. It provides the manager with the nextTerminationId for use in creating a new TerminationsTable Entry. | |
| medGwyTermIdEntry | 1.3.6.1.2.1.0.1.3.1.1 | not-accessible | This table contains a nextTerminationId for each Gateway, and is indexed by mediaGatewayId. | |
| TES medGwyNextTerminationId | 1.3.6.1.2.1.0.1.3.1.1.1 | TestAndIncr | read-write | The Next Value for a MediaGateway TerminationId. Assists the manager in selecting a value for medGwyTerminationId. Using the TestAndIncr syntax, A Manager will 'lock' this variable, ensuring single access. |
| medGwyTerminationsTable | 1.3.6.1.2.1.0.1.3.2 | not-accessible | This table contains information about terminations in a media gateway. It is a list of terminations. The number of entries equals to the total number of terminations for all contexts in a gateway. | |
| medGwyTerminationsEntry | 1.3.6.1.2.1.0.1.3.2.1 | not-accessible | It contains objects that describe a termination. | |
| MED medGwyTerminationId | 1.3.6.1.2.1.0.1.3.2.1.1 | MediaGatewayTermId | not-accessible | An unique identification number that is assigned to the termination by a media gateway. This is the TerminationId that would be used in the protocol messages that are sent from the gateway |
| STR medGwyTerminationName | 1.3.6.1.2.1.0.1.3.2.1.2 | SnmpAdminString | read-create | A descriptive name that would describe this termination and its use. For example, 'emergency-ds0-1' indicating that this termination is reserved as an emergencey DS0 channel |
| INT medGwyTerminationAdminStatus | 1.3.6.1.2.1.0.1.3.2.1.3 | INTEGER | read-write | The desired state of the termination. The testing(3) state indicates that no connections can be created for this termination. When a managed system initializes, all terminations start with medGwyTerminationAdminStatus in the out-of-service(2) state. As a result of either explicit management action or per configuration information retained by the managed system, medGwyTerminationAdminStatus is then changed to either the in-Service(1) or testing(3) states (or remains in the out-Of-Service(2) state). |
| INT medGwyTerminationOperStatus | 1.3.6.1.2.1.0.1.3.2.1.4 | INTEGER | read-create | The current operational state of the termination. The testing(3) state indicates that it is in the testing mode and no connections can be created on it. If medGwyTerminationAdminStatus is out-of-service(2) then medGwyTerminationOperStatus should be down(2). If medGwyTerminationAdminStatus is changed to up(1) then medGwyTerminationOperStatus should change to up(1) if the termination is ready to accept connections; it should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state |
| NUM medGwyTerminationInterfaceIdentifier | 1.3.6.1.2.1.0.1.3.2.1.5 | InterfaceIndex | read-create | A number that uniquely identifies the interface in the physical gateway. This is the ifIndex in the ifTable, that this termination would be using to communicate to other gateways |
| U32 medGwyTerminationPropertyProfileId | 1.3.6.1.2.1.0.1.3.2.1.6 | Unsigned32 | read-create | This determines the profile of the termination which determines what kind of capabilities this termination has. This is an index into the medGwyPropertyProfileTable which identifies all the profile that are available |
| ROW medGwyTerminationRowStatus | 1.3.6.1.2.1.0.1.3.2.1.7 | RowStatus | read-create | This is used to create new rows in this table, Modify existing rows, and to delete existing rows. |
| medGwyPropertyProfileTable | 1.3.6.1.2.1.0.1.3.3 | not-accessible | This table contains a list of the properties supported in a Profile. A Manager builds a Profile of properties, then ties each termination to a defined profile | |
| medGwyPropertyProfileEntry | 1.3.6.1.2.1.0.1.3.3.1 | not-accessible | Each row represents a default property of the Property Profile N-entries per mediaGatewayId/PropertyId, one entry per property. | |
| U32 medGwyPropertyProfileId | 1.3.6.1.2.1.0.1.3.3.1.1 | Unsigned32 | not-accessible | This PropertyProfile Identifier uniquelyidentifies this set of properties. This is the value each termination would refer, when they would like to support all the properties in this profile |
| U32 medGwyPropertyProfileIndex | 1.3.6.1.2.1.0.1.3.3.1.2 | Unsigned32 | not-accessible | This is the index to the PropertyProfile This is just a 'counter' through the medGwyPropertyProfile Table. ie, property=1 property=2 etc. |
| OID medGwyPropertyProfileProperty | 1.3.6.1.2.1.0.1.3.3.1.3 | AutonomousType | read-create | The Property supported by this Profile. This is an Object ID (OID) defined in a package MIB to identify a Particular property (such as AnalogLines, Tones etc). |
| ROW medGwyTermPropertyProfileStatus | 1.3.6.1.2.1.0.1.3.3.1.4 | RowStatus | read-create | used to create new rows in this table, modify existing rows, and to delete existing rows. |
| medGwyProperties | 1.3.6.1.2.1.0.1.4 | |||
| mediaGatewayMIBNotifications | 1.3.6.1.2.1.0.2 | |||
| medGwyNotifPrefix | 1.3.6.1.2.1.0.2.0 | |||
| NTF medGwyLinkStatusChange | 1.3.6.1.2.1.0.2.0.1 | This notification indicates that operational status of a media gateway control link has changed. | ||
| NTF medGwyInvalidControllerAddress | 1.3.6.1.2.1.0.2.0.2 | This notification indicates that a message was received from a controller that did not match any of the valid controller IPAddress-es configured in medGwyGatewayControllerTable | ||
| NTF medGwyInvalidTerminationId | 1.3.6.1.2.1.0.2.0.3 | This notification indicates that a message was received from a controller that contained a TerminationId that did not match any TerminationId in the TerminationsTable. TerminationId is found in the OID of the medGwyTerminationName Object. | ||
| NTF medGwyInvalidPackageElement | 1.3.6.1.2.1.0.2.0.4 | This notification indicates that a message was received from a controller that contained an event, signal, or descriptor that was not recognized for the package. | ||
| NTF medGwyTerminationStatusChange | 1.3.6.1.2.1.0.2.0.5 | This notification is sent when a termination changes status. | ||
| NTF medGwyGatewayHandoff | 1.3.6.1.2.1.0.2.0.6 | This notification is sent when a gateway is handed off to a different gateway controller either due to a apparent MGC failure or due to a MGC-enforced condition | ||
| NTF medGwyProtocolError | 1.3.6.1.2.1.0.2.0.7 | This notification is sent when a protocol error is detected in the messages received from the 'configured' gateway controllers | ||
| medGwyNotifObjects | 1.3.6.1.2.1.0.2.1 | |||
| OCT medGwyReceivedElement | 1.3.6.1.2.1.0.2.1.1 | OCTET STRING | accessible-for-notify | The element name received in a megaco message. For example, 'eventDescriptor' is one such element that could be sent with the notifications |
| mediaGatewayConformance | 1.3.6.1.2.1.0.3 | |||
| medGwyCompliances | 1.3.6.1.2.1.0.3.1 | |||
| medGwyCompliance | 1.3.6.1.2.1.0.3.1.1 | Compliance statement for entities which implement the MEGACO-MIB. | ||
| medGwyConfGroups | 1.3.6.1.2.1.0.3.2 | |||
| medGwyConfigGroup | 1.3.6.1.2.1.0.3.2.1 | This group contains of all the configuration Information for a Media Gateway. This group is mandatory for any implementation managing a media gateway or a group of media gateways | ||
| medGwyStatsGroup | 1.3.6.1.2.1.0.3.2.2 | This group contains of all the statistics Information for a Media Gateway. This group is mandatory for any implementation managing a media gateway or a group of media gateways | ||
| medGwyGWControllerGroup | 1.3.6.1.2.1.0.3.2.3 | This group contains of all the configuration Information for a Media Gateway Controller. This group is mandatory for any implementation managing a media gateway controller or a group of media gateway controllers. It is also mandatory for implementations managing media gateway(s) | ||
| medGwyNextIdGroup | 1.3.6.1.2.1.0.3.2.4 | Agent provides NextId's to the Manager to assist in selecting and creating new table entries. This group is optional for all the implementations. But when it is not implemented, it is the manager's responsibility to uniquely determine these ids | ||
| medGwyNotificationsGroup | 1.3.6.1.2.1.0.3.2.5 | This group contains notifications that an entity implementing the Media Gateway(s) will send. This group is mandatory for all implementations that are managing a media gateway or a group of media gateways |
RFC description
Implements SNMP management for MEGACO (H.248) protocol endpoints and gateways, as defined in RFC 3432, managing VoIP gateway control and signaling.
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