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MIB support for MAC notification traps
Dell EMC Networking OS provides MIB support to generate SNMP trap messages on learning or station move of a new or
existing MAC address in the system with macaddress, vlanid, and port details. The following table lists the related MIB
objects, OID, and description for the same:
Table 136. MIB Objects for MAC notification traps
MIB Object OID Description
dellNetMacNotifMib 1.3.6.1.4.1.6027.3.28.1 Contains the MAC notification groups.
dellNetMacNotificationGroups 1.3.6.1.4.1.6027.3.28.1.1 Contains the MAC notification objects in
the group.
dellNetMacNotificationObjects 1.3.6.1.4.1.6027.3.28.1.1.1 Contains the types of MAC notification
traps.
macLearnNotification 1.3.6.1.4.1.6027.3.28.1.1.1.1 Specifies the trap generated when a new
MAC is learnt in the system
macMoveNotification 1.3.6.1.4.1.6027.3.28.1.1.1.2 Specifies the trap generated when a
station move is detected within 3
seconds
Configuring SNMP traps for new MAC learning or
stationmove
You can configure the system to send SNMP MAC notifications from the Dell EMC Networking OS.
To configure the system to send SNMP MAC-notifications, use the following command:
Enable MAC-notification traps.
CONFIGURATION mode
snmp-server traps mac-notification
Trap messages are generated only for the new MAC and for the MAC that is learnt for the first time in the system. If
same MAC is learnt on different vlanids, then the system does not generate trap messages.
If stationmove is detected within 3 seconds, then the system generates stationmove trap messages and beyond 3
seconds, you cannot see any SYSLOG messages in the system. In continuous stationmove, the system generates only 4
stationmove trap messages and after every 1 minute, the system generates SYSLOG/trap messages.
If there is MAC flooding, only 50 MACs are covered in the trap messages in 1 second and other MACs learnt in the
system are processed in the next cycle.
NOTE:
For the VLT-LAG interfaces, the snmp-server traps mac-notification command should be enabled
on both the interfaces. If the command is configured only on one VLT node, then you cannot see any VLT mismatch
in the system. The snmp-server traps mac-notification is not visible under ICL interface and no TRAPS are
supported.
Simple Network Management Protocol (SNMP) 869