USR-CHASSIS-MIB

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Organization: CommWorks Corporation, a 3Com Company

Last Updated: 2002-05-05

Category: CommWorks/3Com Access Equipment

Description: Monitors CommWorks/3Com chassis hardware inventory, card status, power, and cooling components.

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What Is USR-CHASSIS-MIB?

USR-CHASSIS-MIB is a CommWorks Corporation (a 3Com Company, U.S. Robotics heritage) proprietary MIB reporting card-chassis inventory and DSA (Dynamic Service Allocation) status on the commWorks remote-access platform. Its objects cover config file name, config-modified flag, chassis-awareness flag, a slot table (slot, owner, card type, port count, description), chassis type, console/DSA settings, DSA query/service request-response counters, DSA trap enable, invalid-receive count, last NMC query time, DSA rebalancing flag, NMC SNMP-forwarding, and a port-bundle (pbCfg) table. As a hardware/status MIB it lets an administrator confirm which card types occupy each chassis slot and watch DSA (call-routing) balancing behavior. It is deployed on CommWorks (3Com/U.S. Robotics) remote-access chassis. Engineers can download the USR-CHASSIS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in USR-CHASSIS-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

CommWorks (3Com/U.S. Robotics) remote-access chassis

Monitoring Examples

An administrator checks usrChassisSlotTable and usrChassisDSARebalancing to confirm card inventory and DSA load-balancing state on a CommWorks (3Com) remote-access chassis.

What Can Be Monitored

card-slot inventory and DSA (call-routing) balancing status

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DateAndTime

From USR-DEFINITIONS-MIB

UsrConfigStatus
UsrDisplayString
common	OBJECT-IDENTITY
nas	OBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using usrChassisDSAQueryReq OID:

Select a CommWorks (3Com/U.S. Robotics) remote-access chassis (slot/card-type inventory and DSA-balancing status) 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 usrChassisDSAQueryReq into the Find box to locate it in the OID tree, then select it and click OK. The number of DSA query requests from NMC seen by this card. 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
usrChassis	1.3.6.1.4.1.429.4.41			The commWorks enterprise defined MIB objects for the card chassis.
STR usrChassisConfigFileName	1.3.6.1.4.1.429.4.41.1	UsrDisplayString	read-only	The name of a ConfigFile to read/write permanent database records. If the value of this object is an empty string, then the NMBA process uses the default name `@file://Chassis.cfg'.
USR usrChassisCFMStatusFlag	1.3.6.1.4.1.429.4.41.2	UsrConfigStatus	read-write	Setting the value of this object to `save' causes the values of the ChassisSlotTable to be written out to the current config file, which is stored in the usrChassisConfigFileName object. While the new ConfigFile is being written, the NMBA process will set the value of this flag to `saving''. Any attempts to set the value while it is not `normal' (i.e. the file is currently being written to the ConfigFile) while result in a badValue error being returned. Setting the value to `normal' will result in no action.
INT usrChassisChassisAwareness	1.3.6.1.4.1.429.4.41.3	INTEGER	read-write	The value of this object determines if chassis awareness messages from the NMC are to be handled or not. If this object is set to `enabled' then when a chassis awareness message is received, the information contained within the message is used to update the chassis configuration. If this object is set to `disabled' any chassis awareness messages received from the NMC are ignored, and the configuration of the chassis must be set statically through SNMP sets, or CLI commands. To be able to SET this object usrChassisDSA must be 'enabled'.
usrChassisSlotTable	1.3.6.1.4.1.429.4.41.4		not-accessible	A table containing one row per slot in the chassis. Each row describes the characteristics of the slot
usrChassisSlotEntry	1.3.6.1.4.1.429.4.41.4.1		not-accessible
I32 usrChassisSlot	1.3.6.1.4.1.429.4.41.4.1.1	Integer32	not-accessible	The slot number of this row.
INT usrChassisOwner	1.3.6.1.4.1.429.4.41.4.1.2	INTEGER	read-write	An indication if this slot's card has this Gateway card assigned as the owning gateway
INT usrChassisCardType	1.3.6.1.4.1.429.4.41.4.1.3	INTEGER	read-write	The ID of the card that is resident in this slot of the chassis.
I32 usrChassisNumPorts	1.3.6.1.4.1.429.4.41.4.1.4	Integer32	read-write	The number ports that are enabled on the card in this chassis slot. This value will be determined when the the card type for this slot is set, or when a chassis awareness message arrives updating this slot. If the card type is empty, the number of ports is set to zero.
STR usrChassisDescription	1.3.6.1.4.1.429.4.41.4.1.5	UsrDisplayString	read-only	A string that describes the type of card in this chassis slot.
INT usrChassisType	1.3.6.1.4.1.429.4.41.4.1.6	INTEGER	read-write	An indicator that tells if this slot's (row's) data was created statically by configuration, or dynamically by the receipt of chassis awareness information from the NMC. Only static entries are saved to the configuration file. Dynamic entries are saved as static entries with an empty card type. If dynamic information is learned it replaces the information in a static entry. A dynamic entry cannot be changed through the CLI or an SNMP set.
INT usrChassisConsole	1.3.6.1.4.1.429.4.41.4.1.7	INTEGER	read-write	An indicator that tells if this slot supports a packet bus based console.
INT usrChassisDSA	1.3.6.1.4.1.429.4.41.5	INTEGER	read-write	The value of this object determines if the card is participating in the dynamic slot assignment algorithm. The default is disabled.
C32 usrChassisDSAQueryReqEx	1.3.6.1.4.1.429.4.41.6	Counter32	read-only	The number of DSA query requests from NMC seen by this card
C32 usrChassisDSAQueryRsp	1.3.6.1.4.1.429.4.41.7	Counter32	read-only	The number of DSA query responses sent by this card to NMC
C32 usrChassisDSAServiceReq	1.3.6.1.4.1.429.4.41.8	Counter32	read-only	The number of DSA service requests issued to this card
C32 usrChassisDSAServiceAssignments	1.3.6.1.4.1.429.4.41.9	Counter32	read-only	The number of DSA assignments performed by this card
C32 usrChassisDSATraps	1.3.6.1.4.1.429.4.41.10	Counter32	read-only	The number of DSA traps issued
C32 usrChassisDSAInvalidRX	1.3.6.1.4.1.429.4.41.11	Counter32	read-only	The number invalid DSA packets received
DAT usrChassisWhenLastNMCQuery	1.3.6.1.4.1.429.4.41.12	DateAndTime	read-only	Time when the last NMC query packet was received
INT usrChassisDSARebalancing	1.3.6.1.4.1.429.4.41.13	INTEGER	read-write	The value of this object determines if the card allows slot rebalancing when participating in the dynamic slot assignment algorithm. The default is enabled.
INT usrNMCSnmpForwarding	1.3.6.1.4.1.429.4.41.14	INTEGER	read-write	The value of this object determines if Hiper will accept SNMP forwarded messages from the NMC over NM bus. or CLI commands.

RFC description

SNMP MIB for US Robotics chassis-based devices providing management definitions for modular equipment architecture, modules, and chassis-level system management.

Start monitoring CommWorks (3Com/U.S. Robotics) remote-access chassis (slot/card-type inventory and DSA-balancing 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.

Download USR-CHASSIS-MIB