CTINB-MIB

All MIBs › CTINB-MIB

Category: Vendor: Cabletron/Enterasys

Description: Manages Cabletron INB (Internal Network Bus) backplane configuration, bandwidth allocation, and bus utilization.

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 CTINB-MIB?

CTINB-MIB is a Cabletron (Enterasys) enterprise MIB that manages the Internal Network Bus (INB) — the internal high-speed backplane bus connecting modules within a Cabletron chassis-based switch or hub. It exposes configuration objects for backplane bandwidth allocation and utilization statistics across the internal bus fabric. Though centered on internal switch-fabric configuration rather than external interfaces, it functions as a hardware-health/performance monitoring tool, letting an operator watch for backplane congestion or utilization approaching capacity, an early indicator of chassis-level hardware bottlenecks. It complements chassis and slot inventory MIBs such as CTRON-CHASSIS-MIB, since the internal bus links physically installed modules together. This MIB is used in legacy modular Cabletron/Enterasys chassis switches and hubs where multiple line modules share a common backplane. Engineers can download the CTINB-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CTINB-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 modular chassis switch or hub

Monitoring Examples

No object/table names were included in the source data, so a grounded polling walkthrough isn't possible here; conceptually, an administrator would poll backplane bandwidth-allocation and bus-utilization objects for each installed module or slot. A rising utilization value approaching the bus's rated capacity would indicate the backplane is nearing saturation, a precursor to packet loss across the chassis. Because no specific object identifiers were provided, this description is necessarily generic rather than object-referenced.

What Can Be Monitored

internal backplane bus utilization
bandwidth allocation per module/slot
backplane bus capacity

Imported Objects

From CTRON-MIB-NAMES

ctINBinfo

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
TimeTicks

OIDs

OID symbolic	OID numeric	Type	Access	Description
inbMonarchSystem	1.3.6.1.4.1.52.4.1.2.12.1.1
inbMonarchSystemTable	1.3.6.1.4.1.52.4.1.2.12.1.1.1		not-accessible
inbMonarchSystemEntry	1.3.6.1.4.1.52.4.1.2.12.1.1.1.1		not-accessible
INT inbMonarchSystemINB	1.3.6.1.4.1.52.4.1.2.12.1.1.1.1.1	INTEGER	read-only	Two physical INB's may exist on a module. This object distinquishes which INB, INB-A or INB-B.
TIK inbMonarchStatusTimeStamp	1.3.6.1.4.1.52.4.1.2.12.1.1.1.1.2	TimeTicks	read-only	This object represents the value of sysUptime when the Monarch last changed.
INT inbMonarchBandwidth	1.3.6.1.4.1.52.4.1.2.12.1.1.1.1.3	INTEGER	read-only	The bandwidth of this INB in Megabits.
INT inbMonarchTDMSlotMode	1.3.6.1.4.1.52.4.1.2.12.1.1.1.1.4	INTEGER	read-write	The automatic TDM mode overides any preset TDM allocation. All boards get an equal number of pre-allocated TDM slots, adding up to 100% of total INB bandwidth, and have Round Robin enabled. The automatic mode will, in effect, provide each board with a 1/(number of boards) minimum guarantee INB bandwidth. The userPolicy mode will have the per board policy enforced. Each board will have a level of service (TDM slots, Round Robin arbitration from the inbMonarchTable) associated with it to take effect when this object is set to user_policy. Newly inserted boards will default to Round Robin and share the remaining fixed INB bandwidth (inbMonarchTDMSlotTotal - inbMonarchTDMSlotActual).
INT inbMonarchTDMSlotTotal	1.3.6.1.4.1.52.4.1.2.12.1.1.1.1.5	INTEGER	read-only	This object represents the total possible number of INB backplane TDM slots.
INT inbMonarchSystemTDMSlotActual	1.3.6.1.4.1.52.4.1.2.12.1.1.1.1.6	INTEGER	read-only	This object represents the total number of allocated INB backplane TDM slots. This is the sum of all instances of inbMonarchTDMSlotRequest in userPolicy mode. In automatic mode this number would represent the number of inserted boards.
INT inbMonarchTDMSlotbandwidth	1.3.6.1.4.1.52.4.1.2.12.1.1.1.1.7	INTEGER	read-only	This object represents the bandwidth in bits that each slot represents on the backplane.
inbMonarch	1.3.6.1.4.1.52.4.1.2.12.1.2
inbMonarchTable	1.3.6.1.4.1.52.4.1.2.12.1.2.1		not-accessible
inbMonarchEntry	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1		not-accessible
INT inbMonarchSlot	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1.1	INTEGER	read-only	The slot number containing this module.
INT inbMonarchINB	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1.2	INTEGER	read-only	Two physical INB interfaces may exist on a module. This object distinquishes which INB, INB-A or INB-B.
INT inbMonarchStatus	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1.3	INTEGER	read-only	Application state of the monarch application on this module. Standby - indicates this module is not the monarch but can be. SysUndefined - indicates this module can not be monarch. Operational - says this module is the monarch.
INT inbMonarchLinkStatus	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1.4	INTEGER	read-only	This object describes the state of the backplane. LinkUp is when this INB detects the clock on the backplane. LinkDown is when no backplane clock has been detected.
INT inbMonarchLinkCapacity	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1.5	INTEGER	read-only	The bandwidth capacity of this board in Megabytes.
INT inbMonarchTDMSlotRequest	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1.6	INTEGER	read-write	This object is the number of fixed TDM slots requested for this board . NOTE: new request will take effect the next time the inbMonarchTDMSlotMode object is set to userPolicy. NOTE: this value has no meaning when the inbMonarchTDMSlotMode is automatic.
INT inbMonarchTDMSlotActual	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1.7	INTEGER	read-write	This object is the actual number of fixed TDM slots given to this board. In automatic mode, this value is the total number of slots divided by the number of inserted boards, in userPolicy mode, this reflects the inbMonarchTDMSlotRequest value at the last time the chassis entered userPolicy mode.
INT inbMonarchRoundRobinControl	1.3.6.1.4.1.52.4.1.2.12.1.2.1.1.8	INTEGER	read-only	This object enables or disable this INB the ability to participate in the Round Robin arbitration phase.
inbStats	1.3.6.1.4.1.52.4.1.2.12.1.3
inbStatsTable	1.3.6.1.4.1.52.4.1.2.12.1.3.1		not-accessible
inbStatsEntry	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1		not-accessible
INT inbStatsSlot	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.1	INTEGER	read-only	The slot number containing this module.
INT inbStatsINB	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.2	INTEGER	read-only	Two physical INB interfaces may exist on a module. This object distinquishes which INB, INB-A or INB-B.
INT inbStatsIfindex	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.3	INTEGER	read-only	The interface number of the INB. The interface identified by a particular value of this object is the same interface as identified by the same value of the ifIndex object defined in RFC 1213.
CTR inbStatsUniCastCells	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.4	Counter	read-only	Number of UniCast INB cells received from the backplane.
CTR inbStatsMultiCastCells	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.5	Counter	read-only	Number of multi-cast INB cells received from the backplane.
CTR inbStatsBroadCastCells	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.6	Counter	read-only	Number of broadcast INB cells received from the backplane.
CTR inbStatsXmitCells	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.7	Counter	read-only	Number of INB cells transmitted to the backplane.
CTR inbStatsRecvSeqErrs	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.8	Counter	read-only	Number of pkts with sequence errors received from the backplane.
CTR inbStatsRecvChksumErrs	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.9	Counter	read-only	Number of pkts with checksum errors received from the backplane.
CTR inbStatsxmitToFps	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.10	Counter	read-only	Number of transmit errors to FPS.
CTR inbStatsToFpsDrops	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.11	Counter	read-only	INBC receive fifo full count. This represents the number of cells that were not forwarded to the FPS.
CTR inbStatsFromInbErrs	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.12	Counter	read-only	Number of INB receive errors from the backplane. This includes FPSC xmit errors(inbStatsxmitToFps), INBC receive sequence errors (inbStatsRecvSeqErrs) and INBC checksum errors(inbStatsRecvChksumErrs).
CTR inbStatsToINBDrops	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.13	Counter	read-only	Number of FPSC recv frame drop count. This represents the number of frames that were not sent out on the INB backplane.
CTR inbStatsToInbErrs	1.3.6.1.4.1.52.4.1.2.12.1.3.1.1.14	Counter	read-only	Number of INB backplane transmit errors. This includes FPSC receive timeout errors

RFC description

INB (Intelligent Network Board) management information for Cabletron Monarch systems. Monitors per-INB system status, bandwidth, and time-division multiplexing (TDM) slot configuration.

Start monitoring Cabletron/Enterasys modular chassis switch/hub (internal backplane bus) 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 CTINB-MIB

What Is CTINB-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description