Reference Guide

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 Force10 System------------
R1_E600#show mac-address-table
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.
--------------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
Dell Networking OS 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. Dell Networking OS 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.
Simple Network Management Protocol (SNMP)
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