AT-FLASH-MIB

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Organization: Allied Telesis, Inc

Last Updated: 2006-06-28

Category: Device Management, Hardware and Environment, Vendor: Allied Telesis

Description: Monitors flash memory usage, available space, and firmware image information on Allied Telesis switches and routers.

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What Is AT-FLASH-MIB?

This is a vendor-specific MIB from Allied Telesis for monitoring flash memory operations, usage, and firmware image status on Allied Telesis switches and routers. It exposes counters and traps for flash filesystem operation failures (open, read, write, close, create, delete, erase, compact) alongside general flash usage information. It is directly used for monitoring the software/hardware status of the device's persistent storage, surfacing failures during firmware upgrades, configuration saves, or image management that would otherwise silently corrupt or fail a flash operation. It has no explicit dependency on other MIBs, being a self-contained Allied Telesis hardware-storage extension. It is deployed across Allied Telesis switches and routers wherever flash-based firmware/configuration storage needs to be monitored for reliability. Engineers can download the AT-FLASH-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in AT-FLASH-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

Allied Telesis switch/router

Monitoring Examples

An administrator would monitor flashWriteFailure, flashEraseFailure, and flashCreateFailure counters during a firmware upgrade or configuration save to confirm the flash operation completed cleanly; a nonzero flashCompleteFailure or flashCheckFailure value would indicate a corrupted or interrupted flash write that could leave the device unable to boot the new image. The flashTrap notification would fire to alert an NMS in real time when any of these failure conditions occurs, rather than relying on periodic polling alone.

What Can Be Monitored

flash read/write/erase failure counts
flash create/delete/compact failure counts
flash open/close failure counts
flash failure trap notifications

Imported Objects

From AT-SMI-MIB

DisplayStringUnsized
modules	OBJECT-IDENTITY

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

DisplayString
TruthValue

How to Use in IPNetwork Monitor

Example using flashGetFailure OID:

Select an Allied Telesis managed switch or router 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 flashGetFailure into the Find box to locate it in the OID tree, then select it and click OK. The number of flash get operations that have failed. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
flash	1.3.6.1.4.1.207.8.4.4.4.31			This MIB file contains definitions of managed objects for the FLASH module.
flashTrap	1.3.6.1.4.1.207.8.4.4.4.31.0
NTF flashFailureTrap	1.3.6.1.4.1.207.8.4.4.4.31.0.1			A flash failure trap is generated when any of the above flash counter is incremented and the failure type is sent in the trap.
INT flashGetFailureEx	1.3.6.1.4.1.207.8.4.4.4.31.1	INTEGER	read-only	The number of flash get operations that have failed.
INT flashOpenFailure	1.3.6.1.4.1.207.8.4.4.4.31.2	INTEGER	read-only	The number of flash open operations that have failed.
INT flashReadFailure	1.3.6.1.4.1.207.8.4.4.4.31.3	INTEGER	read-only	The number of flash read operations that have failed.
INT flashCloseFailure	1.3.6.1.4.1.207.8.4.4.4.31.4	INTEGER	read-only	The number of flash close operations that have failed.
INT flashCompleteFailure	1.3.6.1.4.1.207.8.4.4.4.31.5	INTEGER	read-only	The number of flash complete operations that have failed.
INT flashWriteFailure	1.3.6.1.4.1.207.8.4.4.4.31.6	INTEGER	read-only	The number of flash write operations that have failed.
INT flashCreateFailure	1.3.6.1.4.1.207.8.4.4.4.31.7	INTEGER	read-only	The number of flash create operations that have failed.
INT flashPutFailure	1.3.6.1.4.1.207.8.4.4.4.31.8	INTEGER	read-only	The number of flash put operations that have failed.
INT flashDeleteFailure	1.3.6.1.4.1.207.8.4.4.4.31.9	INTEGER	read-only	The number of flash delete operations that have failed.
INT flashCheckFailure	1.3.6.1.4.1.207.8.4.4.4.31.10	INTEGER	read-only	The number of flash check operations that have failed.
INT flashEraseFailure	1.3.6.1.4.1.207.8.4.4.4.31.11	INTEGER	read-only	The number of flash erase operations that have failed.
INT flashCompactFailure	1.3.6.1.4.1.207.8.4.4.4.31.12	INTEGER	read-only	The number of flash compaction operations that have failed.
INT flashVerifyFailure	1.3.6.1.4.1.207.8.4.4.4.31.13	INTEGER	read-only	The number of flash verify operations that have failed.

RFC description

Allied Telesis FLASH module management for monitoring flash memory operations and failure counters on network devices.

Start monitoring Allied Telesis managed switches and routers 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 AT-FLASH-MIB