CTRON-ISDN-CONFIGURATION-MIB

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Category: Vendor: Cabletron/Enterasys

Description: Configures Cabletron ISDN BRI/PRI interface parameters, B-channel usage, and call setup parameters.

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What Is CTRON-ISDN-CONFIGURATION-MIB?

CTRON-ISDN-CONFIGURATION-MIB is a Cabletron Networks MIB for configuring ISDN BRI/PRI D-channel and B-channel interface parameters on Cabletron routing/access hardware. It exposes a D-channel configuration table (isdnDchTable/isdnDchEntry) with objects covering rate access, allowed/in-use B-channels, supported switch types, SPID identifiers, and directory numbers (isdnDchRateAccess, isdnDchAllowedCh, isdnDchChInUse, isdnDchSwitchType, isdnDchSPID1/2, isdnDchDirNum1/2). Its monitoring value is largely in ISDN line/software configuration status - which switch type and SPIDs are provisioned, and how many B-channels are actually in use versus available - useful for diagnosing call-setup or provisioning problems rather than physical hardware faults. It is tied conceptually to standard ISDN signaling protocols (Q.921/Q.931) rather than a specific IETF MIB dependency. It is deployed on Cabletron/Enterasys routers or access devices providing ISDN BRI/PRI WAN connectivity, such as dial-backup links. Engineers can download the CTRON-ISDN-CONFIGURATION-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CTRON-ISDN-CONFIGURATION-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

Cabletron/Enterasys router with ISDN BRI/PRI interface

Monitoring Examples

An admin would poll isdnDchTable/isdnDchEntry indexed by isdnDchIndex to check isdnDchChInUse against isdnDchAllowedCh, revealing whether all provisioned B-channels are being utilized or the line is under-provisioned during peak dial-backup usage. isdnDchSwitchType and isdnDchSPID1/isdnDchSPID2 would be checked against carrier-provisioned values to diagnose an ISDN line that fails to register with the central-office switch. isdnDchDirNum1/isdnDchDirNum2 expose the directory numbers assigned to the BRI line's two B-channels.

What Can Be Monitored

D-channel/B-channel configuration
B-channels in use vs allowed
switch type
SPID configuration
directory numbers

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
enterprises

OIDs

OID symbolic	OID numeric	Type	Access	Description
cabletron	1.3.6.1.4.1.52
mibs	1.3.6.1.4.1.52.4
ctron	1.3.6.1.4.1.52.4.1
ctDataLink	1.3.6.1.4.1.52.4.1.2
ctronWan	1.3.6.1.4.1.52.4.1.2.7
ctISDNconfigMib	1.3.6.1.4.1.52.4.1.2.7.4
ctISDNcontrol	1.3.6.1.4.1.52.4.1.2.7.4.1
isdnDchTable	1.3.6.1.4.1.52.4.1.2.7.4.1.1		not-accessible	A list of D channnel interfaces entries. The list consists of a single entry at this time.
isdnDchEntry	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1		not-accessible	A D channnel interface entry containing objects relating to the particular D channel.
INT isdnDchIndex	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.1	INTEGER	read-only	A unique index for this D Channel of this ISDN-Controller.
INT isdnDchRateAccess	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.2	INTEGER	read-only	The Rate Access of this ISDN interface.
INT isdnDchAllowedCh	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.3	INTEGER	read-only	A bit string with bit 1 signifiying time slot 1. A set bit means that a B channel may be allocated on that time slot. A reset bit means the channel is reserved or otherwise out of service.
INT isdnDchChInUse	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.4	INTEGER	read-only	A bit string with bit 1 signifying time slot 1. A set bit means that a B channel has been allocated on that time slot. A reset bit means the channel is available, reserved, or otherwise out of service.
INT isdnDchSupportedSwitches	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.5	INTEGER	read-only	A bit string with each bit position signifying support of a specific switch type as indicated by the list. A set bit means that that switch type is supported.
INT isdnDchSwitchType	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.6	INTEGER	read-write	Switch type selector as indicated by the list.
OCT isdnDchSPID1	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.7	OCTET STRING	read-write	The Service profile identifier for BRI channel 1.
OCT isdnDchSPID2	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.8	OCTET STRING	read-write	The Service profile identifier for BRI channel 2.
OCT isdnDchDirNum1	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.9	OCTET STRING	read-write	The local directory number for BRI channel 1.
OCT isdnDchDirNum2	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.10	OCTET STRING	read-write	The local directory number for BRI channel 2.
INT isdnDchOperStatus	1.3.6.1.4.1.52.4.1.2.7.4.1.1.1.11	INTEGER	read-only	The operational status of the signalling channel.
dialCtlNbrCfgTable	1.3.6.1.4.1.52.4.1.2.7.4.1.2		not-accessible	The list of neighbors from which the managed device will accept calls or to which it will place them.
dialCtlNbrCfgEntry	1.3.6.1.4.1.52.4.1.2.7.4.1.2.1		not-accessible	A single Neighbor. This entry is effectively permanent, and contains address information describing the neighbor. The value of dialCtlNbrCfgOriginateAddress must be specified before a new row in this table can become active(1). Any writeable parameters in an existing entry can be modified while the entry is active. The modification will take effect when the neighbor in question will be called the next time.
INT dialCtlNbrCfgId	1.3.6.1.4.1.52.4.1.2.7.4.1.2.1.1	INTEGER	read-only	This object defines a single neighbor. There may be several entries in this table for one neighbor, defining different ways of reaching this neighbor. Thus, there may be several entries in this table with the same value of dialCtlNbrCfgId. Multiple entries for one neighbor may be used to support multilink as well as backup lines. A single neighbor will be identified by a unique value of this object. Several entries for one neighbor MUST have the same value of dialCtlNbrCfgId and dialCtlNbrCfgIfIndex but still different ifEntries and thus different values of dialCtlNbrCfgIndex.
INT dialCtlNbrCfgIndex	1.3.6.1.4.1.52.4.1.2.7.4.1.2.1.2	INTEGER	read-only	The index value which uniquely identifies an entry in this table.
INT dialCtlNbrCfgIfIndex	1.3.6.1.4.1.52.4.1.2.7.4.1.2.1.3	INTEGER	read-only	The ifIndex value of the interface associated with this neighbor.
STR dialCtlNbrCfgOriginateAddress	1.3.6.1.4.1.52.4.1.2.7.4.1.2.1.4	DisplayString	read-write	Call Address at which the neighbor will be called. Think of this as the set of characters following 'ATDT ' or the 'phone number' included in a D channel call request. The structure of this information will be switch type specific.
STR dialCtlNbrCfgAnswerAddress	1.3.6.1.4.1.52.4.1.2.7.4.1.2.1.5	DisplayString	read-write	Calling Party Number information element, as for example passed in an ISDN SETUP message by a PBX or switch, for incoming calls. This address can be used to identify the neighbor. If this address is either unknown or identical to dialCtlNbrCfgOriginateAddress, this object will be a zero length string.
rmtProfileTable	1.3.6.1.4.1.52.4.1.2.7.4.1.3		not-accessible	The list of neighbors from which this device will accept calls or to which it will place them.
rmtProfileEntry	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1		not-accessible	A single Neighbor. This entry is effectively permanent, and contains information describing the neighbor.
INT rmtProfileEntryIndex	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.1	INTEGER	read-only	The index value which uniquely identifies an entry in this table.
OCT rmtProfileEntryName	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.2	OCTET STRING	read-write	ASCII name of the neighbor.
OCT rmtProfileEntryMakerName	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.3	OCTET STRING	read-write	ASCII name of the manufacturer of the neighbor. In other words, it is a name by which to uniquely identify the remote access device to which the profile belongs.
INT rmtProfileEntryAction	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.4	INTEGER	read-write	Desired action for the neighbor interface
INT rmtProfileEntryState	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.5	INTEGER	read-only	Current state of the neighbor interface
INT rmtProfileEntryMaxNeighbor	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.6	INTEGER	read-only	The maximum allowable dialCtlNbrCfgIndex. It is the number of instances of the profile.
INT rmtProfileEntryBchInUse	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.7	INTEGER	read-only	A bit string with bit 1 signifiying B channel 1. A set bit means that this channel was assigned for current or last call.
INT rmtProfileEntryLinkHead	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.8	INTEGER	read-only	A zero value signifies it is a primary profile. Otherwise, it is an instance profile and the value identifies the primary profile from which it was spawned.
INT rmtProfileEntryNextLink	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.9	INTEGER	read-only	A non-zero value identifies an instance profile. Whereas, a zero value either means it is a primary profile or the last instance of a primary profile.
INT rmtProfileEntryMpCapable	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.10	INTEGER	read-write	MP option selector. Set to a value of one when MP support is desired otherwise set to a value of two. The default setting is disabled. When enabled the attempt is made to negotiate MP support. Both parties must support MP to be able to successfully negotiate MP.
INT rmtProfileEntryMpLineUtilization	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.11	INTEGER	read-write	Used to set the Line Utilization Threshold (LUT) % to compare against the linear weighted percentage to determine when more/less bandwidth is to be added/removed. Linear weighting is computed (averaged) over the period of time specified by the rmtProfileEntryMpHistoryTime object. Additional bandwidth is added whenever the linear weighted percentage exceeds the LUT % for a consecutive number of average line utilization reading(s) (computation(s)) as specified by the rmtProfileEntryMpMoreBWSamples object. Conversely, additional possible previously added Bandwidth is removed whenever the linear weighted percentage falls below the LUT % value for a consecutive number of average line utilization reading(s) (computation(s)) as specified by the rmtProfileEntryMpLessBWSamples object.
INT rmtProfileEntryMpHistoryTime	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.12	INTEGER	read-write	Used to set the history time value in seconds for the number of line utilization reading(s)/sample(s) desired to compute the average line utilization. It specifies the window size over which to to compute the average line utilization.
INT rmtProfileEntryMpMoreBWSamples	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.13	INTEGER	read-write	Used to set the number of consecutive line utilization average computations that must exceed the LUT % value as specified by the rmtProfileEntryMpLineUtilization object before allowing possible more bandwidth to be added.
INT rmtProfileEntryMpLessBWSamples	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.14	INTEGER	read-write	Used to set the number of consecutive line utilization average computations that must fall below the LUT % value as specified by the rmtProfileEntryMpLineUtilization object before removing possible previously added bandwidth.
INT rmtProfileEntryMpMaxCallsAllowed	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.15	INTEGER	read-write	Used to set the maxium number of channels an ISDN MP capable call is allowed.
INT rmtProfileEntryMpCallsToAdd	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.16	INTEGER	read-write	Used to set the number of additional channel(s) (call(s)) to increment by whenever the need for more bandwidth is determined.
INT rmtProfileEntryMpCallsToRemove	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.17	INTEGER	read-write	Used to set the number of channel(s) (call(s)) to decrement by whenever the need for possible previously added additional bandwidth is determined to no longer be needed/desired.
INT rmtProfileEntryMpAvgPktSize	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.18	INTEGER	read-write	Used to set the average packet size by which to determine when its best to split a packet. This is an attempt to minimize the amount of buffering necessary at the remote device to maintain packet sequentiality.
INT rmtProfileEntryMpRmtBwCtrl	1.3.6.1.4.1.52.4.1.2.7.4.1.3.1.19	INTEGER	read-write	MP remote bandwidth control selector. Set to a one when bandwidth changes are permitted by either side ie by both parties otherwise set to a value of two. The default setting is disabled. That is to say, only the caller is permitted to change (control) the bandwidth.
callHistory	1.3.6.1.4.1.52.4.1.2.7.4.2
INT callHistoryTableMaxLength	1.3.6.1.4.1.52.4.1.2.7.4.2.1	INTEGER	read-only	The upper limit on the number of entries that the callHistoryTable may contain. When this table is full, the oldest entry will be deleted and the new one will be created.
callHistoryTable	1.3.6.1.4.1.52.4.1.2.7.4.2.2		not-accessible	A table containing information about specific calls to a specific destination.
callHistoryEntry	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1		not-accessible	The information regarding a single Connection.
INT callHistorySetupTime	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.1	INTEGER	read-only	The value of system up time when the call associated to this entry was started. This will be useful for an NMS to retrieve all calls after a specific time. Also, this object can be useful in finding large delays between the time the call was started and the time the call was connected. For ISDN media, this will be the time when the setup message was received from or sent to the network.
INT callHistoryIndex	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.2	INTEGER	read-only	Index variable to access the CallHistoryEntry objects of the callHistoryTable.
STR callHistoryPeerAddress	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.3	DisplayString	read-only	The number this call is connected to. If the number is not available, then it will have a length of zero.
INT callHistoryNeighborId	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.4	INTEGER	read-only	This is the Id value of the neighbor table entry to which this call was made. If a neighbor table entry for this call does not exist, the value of this object will be zero.
INT callHistoryLogicalIfIndex	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.5	INTEGER	read-only	This is the ifIndex value of the logical interface through which this call was made.
INT callHistoryDisconnectCause	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.6	INTEGER	read-only	The encoded network cause value associated with this call. The value of this object will depend on the interface type as well as on the protocol and protocol version being used on this interface. The more common cause values are indicated in the list.
INT callHistoryConnectTime	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.7	INTEGER	read-only	The value of system up time when the call was connected.
INT callHistoryDisconnectTime	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.8	INTEGER	read-only	The value of system up time when the call was disconnected.
INT callHistoryCallOrigin	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.9	INTEGER	read-only	The call origin.
INT callHistoryInfoType	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.10	INTEGER	read-only	The information type for this call.
CTR callHistoryTransmitPackets	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.11	Counter	read-only	The number of packets which were transmitted while this call was active.
CTR callHistoryTransmitBytes	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.12	Counter	read-only	The number of bytes which were transmitted while this call was active.
CTR callHistoryReceivePackets	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.13	Counter	read-only	The number of packets which were received while this call was active.
CTR callHistoryReceiveBytes	1.3.6.1.4.1.52.4.1.2.7.4.2.2.1.14	Counter	read-only	The number of bytes which were received while this call was active.

RFC description

ISDN configuration management for Cabletron network devices supporting D-channel signaling.

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Download CTRON-ISDN-CONFIGURATION-MIB

What Is CTRON-ISDN-CONFIGURATION-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description