Reference Guide

Simple Network Management Protocol (SNMP) | 197
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.
Figure 16-10. Fetching Dynamic MAC Addresses on the Default VLAN
Deriving Interface Indices
FTOS assigns an interface number to each (configured or unconfigured) physical and logical interface.
Display the interface index number using the command
show interface from EXEC Privilege mode, as
shown in Figure 16-11.
Figure 16-11. Display the Interface Index Number
The interface index is a binary number with bits that indicate the slot number, port number, interface type,
and card type of the interface. FTOS converts this binary index number to decimal, and displays it in the
output of the
show interface command.
Figure 16-12. Interface Index Binary Calculations
-----------------------------MAC Addresses on Dell Force10
System-------------------------------
FTOS(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
SNMPv2-SMI::enterprises.6027.3.2.1.1.5.1.3.1000.0.1.232.6.149.172.1 = INTEGER: 1
SNMPv2-SMI::enterprises.6027.3.2.1.1.5.1.4.1000.0.1.232.6.149.172.1 = INTEGER: 1
FTOS#show interface tengig 1/21
TenGigabitEthernet 1/21 is up, line protocol is up
Hardware is Dell Force10Eth, address is 00:01:e8:0d:b7:4e
Current address is 00:01:e8:0d:b7:4e
Interface index is 72925242
[output omitted]
Card Type
Interface Type
Port Number
Slot Number
14 bits
4 bits
7 bits
1 bit
Unused
5 bits
1 bit
P/L Flag