By default, an snmpwalk on the dot1dTpFdbTable of a Dell Force10 switch will not return the MAC address table (Forwarding Database) of the switch.
Here is a link for the dot1dBridge MIB tree example in detail which is a common OUI:
http://www.cs.vsb.cz/grygarek/TPS/projekty/0405Z/SNMP/mib/dot1dbridge.html
Steps:
In order to allow the Dell Force10 SNMP agent to respond to snmpgets for the dot1dTpFdbTable, a hidden CLI command needs to be enabled.
Executed commands from the above steps:
FTOS#configure
FTOS(conf)#enable-dot1d-mibwalk
FTOS(conf)#exit
FTOS#write
The following shows the results from a mibwalk on the dot1dTpFdbTable
This example was created using iReasoning MIB Browser