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Each object is comprised of an OID concatenated with an instance number. In the case of these objects,
the instance number is the decimal equivalent of the MAC address; derive the instance number by
converting each hex pair to its decimal equivalent. For example, the decimal equivalent of E8 is 232, and
so the instance number for MAC address 00:01:e8:06:95:ac is.0.1.232.6.149.172.
The value of dot1dTpFdbPort is the port number of the port off which the system learns the MAC address.
In this case, of TenGigabitEthernet 1/21, the manager returns the integer 118.
Example of Fetching MAC Addresses Learned on the Default VLAN Using SNMP
Example of Fetching MAC Addresses Learned on a Non-default VLAN Using SNMP
Example of Fetching MAC Addresses Learned on a Port-Channel Using SNMP
-----------------------------MAC Addresses on Dell Networking
System-------------------------------
Dell#show mac-address-table
VlanId Mac Address Type Interface State
1 00:01:e8:06:95:ac Dynamic Tengig 1/21 Active
------------------------------Query from Management
Station--------------------------------
>snmpwalk -v 2c -c techpubs 10.11.131.162 .1.3.6.1.2.1.17.4.3.1
SNMPv2-SMI::mib-2.17.4.3.1.1.
0.1.232.6.149.172 = Hex-STRING: 00 01 E8 06 95 AC
SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.232.6.149.172 = INTEGER: 118
SNMPv2-SMI::mib-2.17.4.3.1.3.0.1.232.6.149.172 = INTEGER: 3
In the following example, GigabitEthernet 1/21 is moved to VLAN 1000, a non-default VLAN. To fetch the
MAC addresses learned on non-default VLANs, use the object dot1qTpFdbTable. The instance number is
the VLAN number concatenated with the decimal conversion of the MAC address.
-----------------------------MAC Addresses on Dell Networking
System-------------------------------
Dell#show mac-address-table
VlanId Mac Address Type Interface State
1000 00:01:e8:06:95:ac Dynamic Tengig 1/21 Active
------------------------------Query from Management
Station--------------------------------
>snmpwalk -v 2c -c techpubs 10.11.131.162 .1.3.6.1.2.1.17.7.1.2.2.1
SNMPv2-SMI::mib-2.17.7.1.2.2.1.2.
1000.0.1.232.6.149.172 = INTEGER: 118
SNMPv2-SMI::mib-2.17.7.1.2.2.1.3.1000.0.1.232.6.149.172 = INTEGER: 3
Use dot3aCurAggFdbTable to fetch the learned MAC address of a port-channel. The instance number is
the decimal conversion of the MAC address concatenated with the port-channel number.
-----------------------------MAC Addresses on Dell Networking
System-------------------------------
Dell(conf)#do show mac-address-table
VlanId Mac Address Type Interface State
1000 00:01:e8:06:95:ac Dynamic
Po 1 Active
------------------------------Query from Management
Station--------------------------------
>snmpwalk -v 2c -c techpubs 10.11.131.162 .1.3.6.1.4.1.6027.3.2.1.1.5
SNMPv2-SMI::enterprises.6027.3.2.1.1.5.1.1.1000.0.1.232.6.149.172.1 = INTEGER:
1000
SNMPv2-SMI::enterprises.6027.3.2.1.1.5.1.2.1000.0.1.232.6.149.172.1 = Hex-
STRING: 00 01 E8
06 95 AC
876
Simple Network Management Protocol (SNMP)