Meaning of snmp-server enable trap parameters

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Oct 9th, 2007
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it would be very kind if somebody could tell me the meaning of the following trap classes which I can configure with the snmp-server enable trap command, especially which events in detail will trigger traps of this classes to be sent.

If there is a good and detailed documentation on cco please let me know too.

snmp-server enable traps aaa-server

snmp-server enable traps alarms

snmp-server enable traps bridge

snmp-server enable traps bulkstat

snmp-server enable traps chassis

snmp-server enable traps entity

snmp-server enable traps fru-ctrl

snmp-server enable traps stpx

snmp-server enable traps transceiver

Best regards,


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Overall Rating: 3.5 (4 ratings)
thorsten.steffen Tue, 10/09/2007 - 05:25
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the document you mentioned only handles the aaa-server parameter but not the other ones I listed above.



yjdabear Tue, 10/09/2007 - 05:27
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You can find Cisco documentations for each of these commands by pasting for example the following into google:

"snmp-server enable traps aaa_server"

thorsten.steffen Tue, 10/09/2007 - 23:33
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After all this hints there are some questions left:

1. What type of snmp traps will in detail be sent if I configure the command

snmp-server enable traps chassis ?

There are already the envmon and module traps which send information about the system hardware


2. We use some Cat 65xx and 45xx with redundant supervisor engines and sso. Does the command

snmp-server enable traps rf

match this feature and send concerning informations?


3. Is my understanding correct that the command

snmp-server enable traps alarms

is a general command to filter which severity level of traps of the other "snmp-server enable traps" commands will be sent?

If not what is the correct meaning?

I found the following documentation but I don't really understand it:

When ALARM traps are enabled, the router generates a trap whenever an alarm is asserted or cleared for physical entities that are defined in the entPhysicalTable in the ENTITY-MIB.

The CISCO-ENTITY-ALARM-MIB provides a management client with the capability to monitor alarms generated by physical entities in a network that are identified in the entPhysicalTable of the Entity-MIB (RFC 2737). Examples of these physical entities are chassis, fans, modules, ports, slots, and power supplies. The management client interfaces with an SNMP agent to request access to objects defined in the CISCO-ENTITY-ALARM-MIB


4. What is the meaning of the command

snmp-server enable traps bulkstat?

And what does bulk statistics mean?

I found the following documentation but I don't understand it:

SNMP notifications can be sent as traps or inform requests. The snmp-server enable traps bulkstat command enables both traps and inform requests for the specified notification types. Use this command with the snmp-server host [bulkstat] command.

The optional collection keyword controls bulk statistics collection notifications that are sent when data collection cannot be carried out successfully. One possible reason for this condition is insufficient memory on the device.

If the optional keywords are not used, all bulk statistics notification types are enabled (or disabled, if the no form of the command is used).


5. Which traps will be sent when I configure the command

snmp-server enable traps entity?

What does "entity" mean?

I also found some documentation:

When ENTITY traps are enabled, the router generates an entConfigChange trap when the information in any of the following tables in the ENTITY-MIB changes:

? entPhysicalTable

? entAliasMappingTable

? entPhysicalContainsTable

Note The SNMP manager should also regularly poll the entLastChangeTime object to detect whether traps were missed due to throttling or transmission loss.


6. Which type of traps concern to the CatOS command

set snmp trap enable system?

Many thanks in advance,



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