System hardware has changed include number of devices or number of modules 
or the place or type of the module is change.

while the state of entity changed or some failure happened, this trap will be sent.

while the temperature of one of modules reach warning temperature, then this trap will be sent.

Notifications of the detection of short circuit or broken circuit, or restoring the line to normal state.

Trap message includes:
IP address for the switch receiving specified messages;
Port receving the messages;
Message length;
Message content.

Send warning to SMP when detecting the ARP attack.

This notification is generated when 
qtechUrpfIfDropRateNotifyEnable is set to true and
the calculated URPF drop rate (qtechUrpfIfDropRate) 
exceeds the notification threshold drop rate 
(qtechUrpfIfNotifyDropRateThreshold). Note the 
exceptional value of 0 for threshold allows notification 
generation if any drop events occur in an interval.
          
After generating this notification, another such
notification will not be sent out for a minimum of five 
minutes (note the exception to this provided by 
qtechUrpfIfNotifyDrHoldDownReset).
          
The object value present in the notification is the 
the drop rate that exceeded the threshold.

the port security violate trap indicates that port security rule 
is violated when port security of this port is opened.

while the storm threshold has been set, if more broadcast 
is send to the port, then this trap will be sent.

This notification is generated when there is enough MAC
address information to fully occupy a maximum size SNMP trap
message. This notification is also generated when there
is at least one MAC address changed or removed and the amount
of time elapsed from the previous notification is greater
than the maximum wait time denoted by qtechMacNotificationInterval object. 
          
If there are more MAC addresses information than can fit into
one qtechMacNotiHisMacChangedMsg object, then multiple notifications
will be generated.

while the state of power changed, then this trap will be sent.

while the state of fan changed, then this trap will be sent.

A pimNeighborLoss trap signifies the loss of an adjacency
with a neighbor.  This trap should be generated when the
neighbor timer expires, and the router has no other
neighbors on the same interface with a lower IP address than
itself.

A igmpVersionErr trap signifies version is 
different in the interface with host.This trap 
should be generated when interface run  version 
IGMPV1 and reported by host which run version IGMPV2.
also when interface run version IGMPV2 and reported 
by host which run version IGMPV1.

A dvmrpRouteInformation trap signifies the
Number of routes is more than The limit of 
qtechDvmrpRoutehogNotification in one minute,
then the trap should be generated.