CTRON-SSR-CAPACITY-MIB

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Organization: Enterasys Networks, Inc.

Last Updated: 2000-07-15

Category: Device Management, Vendor: Cabletron/Enterasys

Description: Reports Cabletron SSR (Smart Switch Router) resource capacity, table utilization, and hardware scaling limits.

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What Is CTRON-SSR-CAPACITY-MIB?

CTRON-SSR-CAPACITY-MIB is a Cabletron (Ctron) MIB for the SSR (Smart Switch Router) product line, providing a schema for tracking system resource capacity and utilization statistics. It exposes data about internal table and resource scaling limits -- essentially how much of various fixed-size hardware/software resources (such as routing table slots, ACL entries, or forwarding table capacity) are in use versus available. This is valuable for monitoring the software/hardware resource health of the router: administrators can detect when a resource is approaching its scaling limit before it causes failures or dropped configuration changes. The module description references 'RS system resource capacity statistics,' suggesting it complements the router's core forwarding and routing MIBs rather than replacing them. It is typically deployed on Cabletron/Enterasys SSR routers in enterprise or carrier networks to proactively track table exhaustion risks. Engineers can download the CTRON-SSR-CAPACITY-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CTRON-SSR-CAPACITY-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 SSR (Smart Switch Router)

Monitoring Examples

The sample objects provided (capConformance, capCompliances, capGroups) are all conformance-related, not runtime data objects -- they define which object groups and compliance statements this MIB supports rather than expose monitorable values themselves. This suggests the actual capacity-counter tables exist elsewhere in the module but were not included in the sample; conformance modules of this kind are used by management tools to verify agent support rather than for direct monitoring. An honest characterization is that the visible sample objects here do not represent live monitoring data.

What Can Be Monitored

resource table capacity/utilization (implied, not directly evidenced by sample objects)

Imported Objects

From CTRON-SSR-SMI-MIB

ssrMibs

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using capCPUL3Learned OID:

Select a Cabletron/Enterasys Smart Switch Router (SSR) (resource capacity statistics) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type capCPUL3Learned into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The total number of new layer 3 flows the CPU has processed and programmed into the Layer 3 hardware flow tables. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
capacityMIB	1.3.6.1.4.1.52.2501.1.270			This module defines a schema to access RS system resource capacity statistics.
chassisCap	1.3.6.1.4.1.52.2501.1.270.1
INT capChassisSlotCount	1.3.6.1.4.1.52.2501.1.270.1.1	INTEGER	read-only	The maximum number of slots in the chassis, including the slot for the CPU module.
INT capChassisSlotsUsed	1.3.6.1.4.1.52.2501.1.270.1.2	INTEGER	read-only	The number of slots used in the chassis. This number includes the slot used for the CPU module, if any.
INT capChassisSlotsFree	1.3.6.1.4.1.52.2501.1.270.1.3	INTEGER	read-only	The number of free slots in the chassis. This includes all of the available slots not used by the CPU or redundant CPU card.
SSR capChassisCPURedundancy	1.3.6.1.4.1.52.2501.1.270.1.4	SSRCapabilityType	read-only	The chassis CPU redundancy capability of the SSR. This will be one of the following values: noSupport(1) -- feature not supported available(2) -- feature not in use enabled(3) -- feature in use and enabled disabled(4) -- feature in use and disabled
SSR capChassisPSRedundancy	1.3.6.1.4.1.52.2501.1.270.1.5	SSRCapabilityType	read-only	The chassis Power Supply redundancy capability of the SSR. This will be one of the following values: noSupport(1) -- feature not supported available(2) -- feature not in use enabled(3) -- feature in use and enabled disabled(4) -- feature in use and disabled
SSR capChassisSFRedundancy	1.3.6.1.4.1.52.2501.1.270.1.6	SSRCapabilityType	read-only	The chassis Switching Fabric redundancy capability of the SSR. This will be one of the following values: noSupport(1) -- feature not supported available(2) -- feature not in use enabled(3) -- feature in use and enabled disabled(4) -- feature in use and disabled
cpu	1.3.6.1.4.1.52.2501.1.270.2
capCPUTable	1.3.6.1.4.1.52.2501.1.270.2.1		not-accessible	Summary of CPU statistics. It is assumed that there is only one CPU per line card.
capCPUEntry	1.3.6.1.4.1.52.2501.1.270.2.1.1		not-accessible	An entry containing CPU statistics information.
INT capCPUModuleIndex	1.3.6.1.4.1.52.2501.1.270.2.1.1.1	INTEGER	not-accessible	The Slot index in which the current CPU is residing.
INT capCPUCurrentUtilization	1.3.6.1.4.1.52.2501.1.270.2.1.1.2	INTEGER	read-only	The CPU utilization expressed as an integer percentage. This is calculated over the last 5 seconds at a 0.1 second interval as a simple average.
C32 capCPUL3LearnedEx	1.3.6.1.4.1.52.2501.1.270.2.1.1.3	Counter32	read-only	The total number of new layer 3 flows the CPU has processed and programmed into the Layer 3 hardware flow tables. Layer 3 flows are packets for IP or IPX protocols that will be routed from one subnet to another. Bridged flows or IP and IPX flows that originate and terminate in the same subnet are accounted for by capCPUL2Learned object.
C32 capCPUL3Aged	1.3.6.1.4.1.52.2501.1.270.2.1.1.4	Counter32	read-only	The total number of Layer 3flows that have been removed from the layer 3 hardware flow tables across all modules by the Layer 3 aging task. This number may increase quickly if routing protocols are not stable. Removal or insertion of routes into the forwarding table will cause premature aging of flows. Flows are normally aged/removed from the hardware when there are no more packets being sent for a defined time period. This counter is cumulative from the time the system started.
C32 capCPUL2Learned	1.3.6.1.4.1.52.2501.1.270.2.1.1.5	Counter32	read-only	The number of L2 flows or addresses learned. The intended result here is to see how many stations attempt to establish switched communication through the SSR.
C32 capCPUL2Aged	1.3.6.1.4.1.52.2501.1.270.2.1.1.6	Counter32	read-only	The total number of L2 addresses or flows aged out. Hosts that end switched communication through the SSR are aged out every 15 seconds.
C32 capCPUNIAReceived	1.3.6.1.4.1.52.2501.1.270.2.1.1.7	Counter32	read-only	The total number of packets received by the NIA chip. This is useful in gauging how many packets are forwarded to the CPU for processing.
C32 capCPUNIATransmitted	1.3.6.1.4.1.52.2501.1.270.2.1.1.8	Counter32	read-only	The total number of packets transmitted by the NIA chip. This is useful in seeing how much the CPU is communicating directory with management stations and other routers.
INT capCPUMinThreshold	1.3.6.1.4.1.52.2501.1.270.2.1.1.9	INTEGER	read-write	The CPU utilization expressed as an integer percentage. This value represents the threshold minimum value for capCPUCurrentUtilization that is used to reset the threshold testing for generation of the envCPUThresholdTrap. This value is equal to 0 by default. When this value or the value of capCPUMaxThreshold is equal to 0, no envCPUThresholdTrap will be generated.
INT capCPUMaxThreshold	1.3.6.1.4.1.52.2501.1.270.2.1.1.10	INTEGER	read-write	The CPU utilization expressed as an integer percentage. This value represents the threshold maximum for capCPUCurrentUtilization which causes generation of the envCPUThresholdTrap. Another trap is not generated until the capCPUCurrentUtilization value has dropped below capCPUMinThreshold. When this value or the value of capCPUMinThreshold is equal to 0, no envCPUThresholdTrap will be generated.
tasks	1.3.6.1.4.1.52.2501.1.270.3
capTaskTable	1.3.6.1.4.1.52.2501.1.270.3.1		not-accessible	A summary of the tasks running on a CPU enabled module in the chassis.
capTaskEntry	1.3.6.1.4.1.52.2501.1.270.3.1.1		not-accessible	An entry containing information on a task running on a CPU enabled module in the chassis including the memory consumption and current status.
INT capTaskModuleIndex	1.3.6.1.4.1.52.2501.1.270.3.1.1.1	INTEGER	not-accessible	The module index on which the task is running.
INT capTaskIndex	1.3.6.1.4.1.52.2501.1.270.3.1.1.2	INTEGER	not-accessible	A unique index assigned to a task instance. This index is unique to the task for the time SSR is booted. If the task is terminated, the index will not be reused for another task that might become active in the system.
OCT capTaskName	1.3.6.1.4.1.52.2501.1.270.3.1.1.3	OCTET STRING	read-only	The encrypted name assigned to this task. This is unique for each different type of task, but there may be multiple instances of the same task running in the system.
C32 capTaskShed	1.3.6.1.4.1.52.2501.1.270.3.1.1.4	Counter32	read-only	The number of times this task has been scheduled to run. This is a cumulative count from the time the SSR was started.
SSR capTaskStatus	1.3.6.1.4.1.52.2501.1.270.3.1.1.5	SSRStatusType	read-only	The current status of this task.
INT capTaskUsed	1.3.6.1.4.1.52.2501.1.270.3.1.1.6	INTEGER	read-only	The size of the memory consumed by this task. This can be used to monitor any excess memory use by a particular task and is expressed in bytes.
memory	1.3.6.1.4.1.52.2501.1.270.4
capMemoryTable	1.3.6.1.4.1.52.2501.1.270.4.1		not-accessible	A summary of the non-volatile storage devices in the SSR.
capMemoryEntry	1.3.6.1.4.1.52.2501.1.270.4.1.1		not-accessible	An entry containing information on a non-volatile memory device in the SSR.
SSR capMemoryType	1.3.6.1.4.1.52.2501.1.270.4.1.1.1	SSRMemoryType	not-accessible	A type of storage device from the enumerated memory types.
INT capMemoryIndex	1.3.6.1.4.1.52.2501.1.270.4.1.1.2	INTEGER	not-accessible	An index or enumeration for the entries of a particular memory type. This index corresponds to: -- Interface index for L2Hardware Type -- Module index for L3Hardware Type -- Enumeration for everything else.
OCT capMemoryDescr	1.3.6.1.4.1.52.2501.1.270.4.1.1.3	OCTET STRING	read-only	The description of the memory device.
INT capMemorySize	1.3.6.1.4.1.52.2501.1.270.4.1.1.4	INTEGER	read-only	Memory device total memory capacity expressed in blocks.
INT capMemoryFree	1.3.6.1.4.1.52.2501.1.270.4.1.1.5	INTEGER	read-only	Memory device free memory in blocks. This will include any unused memory between used memory blocks and is calculated by subtracting the memory used from the size of the memory device.
INT capMemoryUsed	1.3.6.1.4.1.52.2501.1.270.4.1.1.6	INTEGER	read-only	Size of used memory on the memory device. This includes the blocks of memory that are only partially used and is expressed in blocks.
INT capMemoryBlockSize	1.3.6.1.4.1.52.2501.1.270.4.1.1.7	INTEGER	read-only	Size of the memory blocks on the memory device. This is the minimum block size of memory returned when memory is requested and is expressed in bytes.
C32 capMemoryFailures	1.3.6.1.4.1.52.2501.1.270.4.1.1.8	Counter32	read-only	The number of times a memory allocation in this memory device has failed. In the case of L2Hardware and L3Hardware types it expresses the number of times a Full Hash Bucket condition has been met.
T/F capMemoryRemovable	1.3.6.1.4.1.52.2501.1.270.4.1.1.9	TruthValue	read-only	Indicates if the memory type is removable.
capConformance	1.3.6.1.4.1.52.2501.1.270.6
capCompliances	1.3.6.1.4.1.52.2501.1.270.6.1
capGroups	1.3.6.1.4.1.52.2501.1.270.6.2
capConfGroupV10	1.3.6.1.4.1.52.2501.1.270.6.2.1			A set of managed objects that make up version 1.0 of the SSR capacity mib.
capComplianceV10	1.3.6.1.4.1.52.2501.1.270.6.2.1.1			The compliance statement for the SSR-CAPACITY-MIB.
capConfGroupV20	1.3.6.1.4.1.52.2501.1.270.6.2.2			A set of managed objects that make up version 2.0 of the SSR capacity mib.
capComplianceV20	1.3.6.1.4.1.52.2501.1.270.6.2.2.1			The compliance statement for the SSR-CAPACITY-MIB.

RFC description

System resource capacity statistics and memory usage monitoring for Enterasys Smart Switch Routers.

Start monitoring Cabletron/Enterasys Smart Switch Router (SSR) (resource capacity statistics) 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 CTRON-SSR-CAPACITY-MIB