DMA200-MIB

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Category: Domain: Video/Broadcast

Description: Provides management objects for the DMA200 series network device including configuration and status monitoring.

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What Is DMA200-MIB?

DMA200-MIB is a vendor-specific MIB for General DataComm's (GDC) DMA200 series network access/multiplexer device, evidenced by the "gdc" root object identifier and the dmaMaster/dmaNode object prefixes. It exposes configuration and status data for the unit's dial-backup modem subsystem (dial prefix, phone number, dial-port status, scan control) and for multi-node network topology management. Its monitoring value centers on hardware/software operational status: dmaMasterDialPortStatus and dmaMasterDialing reveal whether the backup modem is idle or actively dialing out, and dmaMasterSupvAccess/dmaMasterFSterminate reflect supervisory session and termination state, together indicating whether automatic dial-backup failover has engaged due to a primary circuit outage. As a legacy proprietary device MIB it shows no apparent dependency on other MIBs beyond base SNMPv2-SMI conventions. It was typically deployed in legacy WAN environments where DMA200 units provided primary leased-line connectivity with dial-up modem backup between multiple network nodes. Network engineers evaluating or troubleshooting this functionality can download the DMA200-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DMA200-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

GDC DMA200 series WAN multiplexer/access device

Monitoring Examples

An admin would poll dmaMasterDialPortStatus and dmaMasterDialing to see whether the unit's backup modem is idle or actively dialing, which reveals a primary-circuit outage triggering failover; dmaNodeTable/dmaNodeEntry keyed by dmaNodeNum would be walked to enumerate configured network nodes, and dmaMasterScanCtrl/dmaMasterResumeScan would show whether the unit is scanning for restoration of the primary link.

What Can Be Monitored

dial-backup modem dial/connect status
dial-out in-progress state
supervisory access session state
configured network node table
primary-link restoration scan control state

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

From RFC1155-SMI

enterprises

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
gdc	1.3.6.1.4.1.498
sc	1.3.6.1.4.1.498.3
dmaSystem	1.3.6.1.4.1.498.3.7
NTF dmaAccess	1.3.6.1.4.1.498.3.7.0.1			The dmaAccess trap is sent whenever the following occurs: value Condition ----- --------- local User plugs in a terminal to the front panel global User enters global mode local User enters local mode none User removes front panel terminal
NTF dmaElementAlarm	1.3.6.1.4.1.498.3.7.0.2			The dmaElementAlarm trap is sent: a) whenever the dma scans the active network elements and detects a change in status. The element number and the current status are sent. This way the trap is sent when an alarm occurs and when it clears. b) whenever a network element is logged on to by the DMA and a mismatch in dmaElementType is found.
dmaMaster	1.3.6.1.4.1.498.3.7.1
INT dmaMasterFSterminate	1.3.6.1.4.1.498.3.7.1.1	INTEGER	write-only	When set, this object will terminate a terminal session from the front panel FS port. The terminal will display a message to the user that access is terminated.
INT dmaMasterSupvAccess	1.3.6.1.4.1.498.3.7.1.2	INTEGER	read-only	The value of the supervisory port terminal access on the DMA-200 master as sent by the trap. Note: when in global access, this can't be read.
STR dmaMasterModemCmd	1.3.6.1.4.1.498.3.7.1.3	DisplayString	read-write	This is the modem 'AT' command string which can be sent for modem configuration. When read, it gives the last response from the modem. If the modem response is greater than 256 bytes in length, the first 256 bytes are read.
STR dmaMasterDialPrefix	1.3.6.1.4.1.498.3.7.1.4	DisplayString	read-write	This is the modem 'AT' command string which is sent to the modem before the DialPhoneNumber. The default is ATD.
STR dmaMasterDialPhoneNumber	1.3.6.1.4.1.498.3.7.1.5	DisplayString	read-write	The phone number of the remote node (DMA-200 slave or PMC-100 slave) to be dialled. If no dial-out phone number is generated, this value should be set to a zero length string.
INT dmaMasterDialing	1.3.6.1.4.1.498.3.7.1.6	INTEGER	write-only	The value initiating the dial or disconnect activity of the DMA-200 master dial-out port. No dialing is initiated if the phone number value is a zero string.
INT dmaMasterDialPortStatus	1.3.6.1.4.1.498.3.7.1.7	INTEGER	read-only	The DMA-200 modem port status at the time of the SNMP status request.
INT dmaMasterResumeScan	1.3.6.1.4.1.498.3.7.1.8	INTEGER	write-only	When written, the DMA200 cancels the internal delay timer and resumes scanning the Network Elements.
INT dmaMasterScanCtrl	1.3.6.1.4.1.498.3.7.1.9	INTEGER	read-write	This object is stored in non-volatile memory and controls the scanning process. The first time the unit is powered, the non-volatile memory is set to dmaScanOff. Setting dmaScanOn will begin the scan process. Setting dmaScanOff will stop the scan process and clear any current alarm states.
dmaNode	1.3.6.1.4.1.498.3.7.2
INT dmaNodeNum	1.3.6.1.4.1.498.3.7.2.1	INTEGER	read-only	Number of DMA-200 and PMC-100 nodes in the system. Firmware revisions E- and below have a maximum of 20 nodes Firmware revisions F- and above have a maximum of 40 nodes
dmaNodeTable	1.3.6.1.4.1.498.3.7.2.2		not-accessible	A table that contains information about the nodes in the system.
dmaNodeEntry	1.3.6.1.4.1.498.3.7.2.2.1		not-accessible	A list of information for each node in the system.
INT dmaNodeIndex	1.3.6.1.4.1.498.3.7.2.2.1.1	INTEGER	read-only	The value indicates the node number for which this entry contains management information.
INT dmaNodeValid	1.3.6.1.4.1.498.3.7.2.2.1.2	INTEGER	read-write	The value indicates the status of the table row entry for the purpose of creation and deletion of new node instances.
STR dmaNodePhoneNumber	1.3.6.1.4.1.498.3.7.2.2.1.3	DisplayString	read-write	The phone number of the slave DMA-200 or slave PMC- 100. If no phone number is generated, this value should be set to a zero length string.
STR dmaNodeName	1.3.6.1.4.1.498.3.7.2.2.1.4	DisplayString	read-write	A textual description of the node ID such as the name or location of the node site. If no name or location identification is generated, this value should be set to a zero length string.
dmaElement	1.3.6.1.4.1.498.3.7.3
dmaElementConfigTable	1.3.6.1.4.1.498.3.7.3.1		not-accessible	A table that contains information about all Network Elements in the system.
dmaElementEntry	1.3.6.1.4.1.498.3.7.3.1.1		not-accessible	A list of information for each Network Element
INT dmaElementIndex	1.3.6.1.4.1.498.3.7.3.1.1.1	INTEGER	read-only	The value indicates the Network Element numeric address for which this entry contains management information.
INT dmaElementRemoteIndex	1.3.6.1.4.1.498.3.7.3.1.1.2	INTEGER	read-write	The value indicates the numeric address of the remote Network Element on the oposite end of the line.
INT dmaElementValid	1.3.6.1.4.1.498.3.7.3.1.1.3	INTEGER	read-write	The value indicates the status of the table row entry for the purpose of creation and deletion of new Network Element instances.
INT dmaElementType	1.3.6.1.4.1.498.3.7.3.1.1.4	INTEGER	read-write	The value indicates the type the T1-CSU Network Element. This value is set by the manager and sent with traps.
INT dmaElementStatus	1.3.6.1.4.1.498.3.7.3.1.1.5	INTEGER	read-only	The value indicates the communication status of the supervisory connection between the DMA-200 Master and the Network Element at the time of the SNMP status request.
INT dmaElementNode	1.3.6.1.4.1.498.3.7.3.1.1.6	INTEGER	read-write	The value indicates the node number to which this Network Element is attached. Same as the corresponding dmaNodeIndex. A value of zero indicates that this Network Element is attached to no node.

RFC description

General DataComm DMA200 device MIB for front-panel terminal access and supervisory port control.

Start monitoring GDC DMA200 series WAN multiplexer/access device (dial-backup) 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 DMA200-MIB

What Is DMA200-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

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RFC description