Dell PowerConnect 5524P User Manual page 326

The following is an example of CLI commands:
console (config)# snmp-server filter user1 iso included
console(config)# end
console # show snmp filters
Name
-----------
user1
SNMP Notification Recipients
An SNMP notification is a trap message, sent from the switch to the SNMP
management station, indicating that a certain event has occurred, such as a
link up or down.
Trap receivers, also known as notification recipients, are network nodes to
which trap messages are sent by the switch.
A trap receiver entry contains the IP address of the node and the SNMP
credentials corresponding to the version that will be included in the trap
message. When an event arises that requires a trap message to be sent, it is
sent to every node listed in the trap receiver list.
Some messages are of an informational nature and are called "informs"
instead of traps.
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Dell PowerConnect 55xx Systems User Guide
OID Tree
-------------
iso
Type
--------
Included