Reference Guide

VlanId Mac Address Type Interface State
1000 00:01:e8:06:95:ac Dynamic Gi 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
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.
Example of Fetching MAC Addresses Learned on a Port-Channel Using SNMP
--------------MAC Addresses on Force10 System-------------------
R1_E600(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
Deriving Interface Indices
FTOS assigns an interface number to each (configured or unconfigured) physical and logical interface.
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.
Starting from the least significant bit (LSB):
• the first 14 bits represent the card type
• the next 4 bits represent the interface type
• the next 7 bits represent the port number
• the next 5 bits represent the slot number
• the next 1 bit is 0 for a physical interface and 1 for a logical interface
• the next 1 bit is unused
For example, the index 72925242 is 100010110001100000000111010 in binary. The binary interface index for
GigabitEthernet 1/21 of a 48-port 10/100/1000Base-T line card with RJ-45 interface. Notice that the physical/logical bit
and the final, unused bit are not given. The interface is physical, so represent this type of interface by a 0 bit, and the
unused bit is always 0. These 2 bits are not given because they are the most significant bits, and leading zeros are often
omitted.
NOTE: The interface index does not change if the interface reloads or fails over. If the unit is renumbered (for any
reason) the interface index changes during a reload.
To display the interface number, use the following command.
• Display the interface index number.
EXEC Privilege mode
show interface
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