Administrator Guide

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 mac–address, vlan–id, and port details. The following table lists the related MIB objects, OID, and description
for the same:
Table 133. 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
station–move
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 vlan–ids, then the system does not generate trap messages.
• If station–move is detected within 3 seconds, then the system generates station–move trap messages and beyond 3 seconds, you
cannot see any SYSLOG messages in the system. In continuous station–move, the system generates only 4 station–move 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 MAC’s 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.
Manage VLANs using SNMP
The qBridgeMIB managed objects in Q-BRIDGE-MIB, defined in RFC 2674, allows you to use SNMP to manage VLANs.
Creating a VLAN
To create a VLAN, use the dot1qVlanStaticRowStatus object.
The snmpset operation shown in the following example creates VLAN 10 by specifying a value of 4 for instance 10 of the
dot1qVlanStaticRowStatus object.
> snmpset -v2c -c mycommunity 123.45.6.78 .1.3.6.1.2.1.17.7.1.4.3.1.5.10 i 4
SNMPv2-SMI::mib-2.17.7.1.4.3.1.5.10 = INTEGER: 4
Simple Network Management Protocol (SNMP)
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