FASTPATH-NSF-MIB

All MIBs › FASTPATH-NSF-MIB

Organization: Broadcom Corporation

Last Updated: 2009-04-23

Category: Routing Protocols, Technology: High Availability, Technology: Routing, Vendor: Dell/DNOS

Description: Broadcom FastPath MIB for Non-Stop Forwarding (NSF) and graceful restart configuration for routing protocol high availability.

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What Is FASTPATH-NSF-MIB?

FASTPATH-NSF-MIB is a Broadcom FastPath MIB that configures and reports on Non-Stop Forwarding (NSF) and graceful-restart behavior, features that allow a switch's control plane to restart (e.g., during a supervisor failover) without disrupting data-plane forwarding of routing protocols like OSPF or BGP. It exposes configuration objects controlling which routing protocols participate in graceful restart and objects reporting the current NSF/restart status of the device. Its monitoring importance is centered on high-availability software status: confirming whether a graceful restart is currently in progress, whether it completed successfully, or whether a restart failed and fell back to a full routing-protocol reconvergence, which directly affects network stability during a control-plane failover event. NSF/graceful-restart mechanisms are defined by IETF standards for specific protocols (e.g., RFC 3623 for OSPF graceful restart, RFC 4724 for BGP graceful restart), which this MIB's underlying feature set depends on. It is deployed on FastPath-based switches and routers used in environments requiring high-availability routing, such as redundant-supervisor core/aggregation switches. Engineers can download the FASTPATH-NSF-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in FASTPATH-NSF-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

Broadcom FastPath-based switches/routers with redundant supervisors

Monitoring Examples

Specific object and table names were not available in the sampled data for this module, but based on its stated purpose an operator would be expected to poll an NSF/graceful-restart status object to see whether a restart is in progress or has completed, and per-protocol graceful-restart enablement objects to confirm which routing protocols are configured to participate. A restart status stuck in an in-progress or failed state longer than expected would indicate the switch's control-plane failover did not complete cleanly, risking a route flap.

What Can Be Monitored

graceful restart/NSF status
per-protocol graceful restart enablement
restart completion/failure state

Imported Objects

From BROADCOM-REF-MIB

fastPath

OBJECT-IDENTITY

From FASTPATH-INVENTORY-MIB

agentInventoryUnitEntry	OBJECT-TYPE
agentInventoryUnitNumber	OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using agentCheckpointMessages OID:

Select a Broadcom FastPath-based Ethernet switch (multi-vendor OEM) (Non-Stop Forwarding/graceful restart) 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 agentCheckpointMessages into the Find box to locate it in the OID tree, then select it and click OK. It reports the total number of checkpoint messages sent. 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
fastPathNsf	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46			This MIB defines the objects used for FastPath to configure and report information and status of NSF features.
agentNsfTraps	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.0
NTF agentNsfStackRestartComplete	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.0.1			Sent when a the stack finishes restarting after a failover.
agentNsfUnitTable	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.1		not-accessible	A table of Per-Unit configuration objects for NSF.
agentNsfUnitEntry	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.1.1		not-accessible	Each Instance corresponds with a different unit managed by this agent.
T/F agentNsfUnitSupport	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.1.1.1	TruthValue	read-only	Indicates if the unit supports the NSF feature.
agentNsfGroup	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2
INT agentNsfAdminStatus	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2.1	INTEGER	read-write	Controls whether NSF is enabled on the unit/stack.
INT agentNsfOperStatus	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2.2	INTEGER	read-only	Indicates whether NSF is enabled on the unit/stack.
INT agentNsfLastStartupReason	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2.3	INTEGER	read-only	The type of activation that caused the software to start the last time. unknown: The switch rebooted for an unknown reason. power-on: The switch rebooted. This could have been caused by a power cycle or an administrative 'Reload' command. warm-admin-move: The administrator issued a command for the stand-by manager to take over. cold-admin-move: The administrator issued a command for the stand-by manager to take over, but the system was not ready for a warm-failover. warm-auto-restart: The primary management card restarted due to a failure, and the system executed a nonstop forwarding failover. cold-auto-restart: The system switched from the active manager to the backup manager and was unable to maintain user data traffic. This is usually caused by multiple failures occurring close together
TIK agentNsfTimeSinceLastRestart	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2.4	TimeTicks	read-only	Time since the current management card became the active management card.
T/F agentNsfRestartInProgress	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2.5	TruthValue	read-only	Whether a restart is in progress. A restart is not considered complete until all hardware tables have been fully reconciled.
T/F agentNsfWarmRestartReady	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2.6	TruthValue	read-only	Whether the initial full checkpoint has finished.
TIK agentNsfBackupConfigurationAge	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2.7	TimeTicks	read-only	Age of the configuration on the backup unit. The time since the running configuration was last copied to the backup unit.
INT agentNsfInitiateFailover	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.2.8	INTEGER	read-write	Triggers an administrative failover to the backup unit.
agentCheckpointStatsGroup	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.3
INT agentCheckpointClearStatistics	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.3.1	INTEGER	read-write	When set to enable(1), resets checkpoint statistics.
C32 agentCheckpointMessagesEx	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.3.2	Counter32	read-only	Total number of checkpoint messages sent.
C32 agentCheckpointBytes	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.3.3	Counter32	read-only	Size in bytes of the total ammount of checkpoint messages sent.
TIK agentCheckpointTimeSinceCountersCleared	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.3.4	TimeTicks	read-only	Indicates how long since the Checkpoint counters have been cleared.
U32 agentCheckpointMessageRateInterval	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.3.5	Unsigned32	read-only	Indicates the duration in seconds of the message rate interval.
G32 agentCheckpointMessageRate	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.3.6	Gauge32	read-only	Number of checkpoint messages received in the last interval defined by agentCheckpointMessageRateInterval.
G32 agentCheckpointHighestMessageRate	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.3.7	Gauge32	read-only	Highest number of checkpoint messages received in an interval defined by agentCheckpointMessageRateInterval.
agentNsfOspfGroup	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.4
INT agentNsfOspfSupportMode	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.4.1	INTEGER	read-write
U32 agentNsfOspfRestartInterval	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.4.2	Unsigned32	read-write
INT agentNsfOspfRestartStatus	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.4.3	INTEGER	read-only
TIK agentNsfOspfRestartAge	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.4.4	TimeTicks	read-only
INT agentNsfOspfRestartExitReason	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.4.5	INTEGER	read-only
INT agentNsfOspfHelperSupportMode	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.4.6	INTEGER	read-write
INT agentNsfOspfHelperStrictLSAChecking	1.3.6.1.4.1.674.10895.5000.2.6132.1.1.46.4.7	INTEGER	read-write

RFC description

Configures and monitors NSF (Non-Stop Forwarding) features on Broadcom FastPath network switches.

Start monitoring Broadcom FastPath-based Ethernet switch (multi-vendor OEM) (Non-Stop Forwarding/graceful restart) 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 FASTPATH-NSF-MIB