D-Link xStack DXS-3250E Web/Installation Manual page 256

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Use Default — Uses the device-generated Engine ID. The default Engine ID is based on the device MAC
address and is defined per standard as:
–
First 4 octets — first bit = 1, the rest is IANA Enterprise number.
–
Fifth octet — Set to 3 to indicate the MAC address that follows.
–
Last 6 octets — MAC address of the device.
2. Define the fields.
3. Click . The SNMP global security parameters are set, and the device is updated.
Page 255
Configuring SNMP
Configuring SNMP Security