Use the following CLI syntax to modify the system SNMP options:
config>system>snmp
engineID engine-id
general-port port
packet-size bytes
no shutdown
A:ALA-104>config>system>snmp# info detail
----------------------------------------------
shutdown
engineID "0000xxxx000000000xxxxx00"
packet-size 1500
general-port 161
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A:ALA-104>config>system>snmp#