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What causes entity.mib traps to be generated?

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As the title suggests I am looking to understand what causes traps to be sent out from the entity.mib. The definition is as follows:

entityMIBTraps      OBJECT IDENTIFIER ::= { entityMIB 2 }

entityMIBTrapPrefix OBJECT IDENTIFIER ::= { entityMIBTraps 0 }

entConfigChange NOTIFICATION-TYPE

    STATUS             current

    DESCRIPTION

            "An entConfigChange notification is generated when the value

            of entLastChangeTime changes. It can be utilized by an NMS

            to trigger logical/physical entity table maintenance polls.

            An agent should not generate more than one entConfigChange

            'notification-event' in a given time interval (five seconds

            is the suggested default).  A 'notification-event' is the

            transmission of a single trap or inform PDU to a list of

            notification destinations.

            If additional configuration changes occur within the

            throttling period, then notification-events for these

            changes should be suppressed by the agent until the current

            throttling period expires.  At the end of a throttling

            period, one notification-event should be generated if any

            configuration changes occurred since the start of the

            throttling period. In such a case, another throttling period

            is started right away.

            An NMS should periodically check the value of

            entLastChangeTime to detect any missed entConfigChange

            notification-events, e.g., due to throttling or transmission

            loss."

   ::= { entityMIBTrapPrefix 1 }

What I would like to know is what is meant by configuration changes in this case. Is it a configuration change made via the configuration terminal? Just looking to see what causes these traps to be sent out.

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Valued Contributor

Re: What causes entity.mib traps to be generated?

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Joy, the response from engineering was that this is only supported on the 4660 and the trap is triggered when an SFP is inserted or removed. Thanks

Jay

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New Contributor

Re: What causes entity.mib traps to be generated?

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Ok so I have noticed something. I think that the entity.mid (and subsequently a few other mibs) are part of the enterprise mibs that while are supported by AOS, don't seem to be enabled by default. Here is the list of trap types that I can enable from all Adtran devices that I currently touch:

RR504_TA908e-0(config)#snmp-server enable traps

<cr>

application            - Enable the application set of traps

bgp                    - Enable the bgp set of traps

frame-relay            - Enable the frame-relay set of traps

resource               - Enable the resource utilization set of traps

snmp                   - Enable the snmp set of traps

track                  - Enable the track set of traps

voice                  - Enable the voice set of traps

vrrp                   - Enable the VRRP v2 and v3 set of traps

Those are the only options that I have available but in reading a lot of the documentation on setting up SNMP on Adtran devices I should have an option available to enable entity traps as follows:

(config)#snmp-server enable traps entity

Whenever I try to run the above though I (obviously since it is not an available option) get an error stating the command is not recognized. What I am left to assume then is that a special license is needed to enable these enterprise traps? I am fairly certain that is the case but if an Adtran representative could chime in and confirm this it would definitely be a huge help as it would save me a lot of time.

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Valued Contributor
Valued Contributor

Re: What causes entity.mib traps to be generated?

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Joy, the response from engineering was that this is only supported on the 4660 and the trap is triggered when an SFP is inserted or removed. Thanks

Jay

View solution in original post

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New Contributor

Re: What causes entity.mib traps to be generated?

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Thanks a lot Jay, I appreciate the response.

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