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
The 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. The 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.
To display the interface number, use the following command.
• Display the interface index number.
EXEC Privilege mode
show interface
Example of Deriving the Interface Index Number
To view the system image on Flash Partition A, use the chSysSwInPartitionAImgVers object or, to view the
system image on Flash Partition B, use the chSysSwInPartitionBImgVers object.
Table 65. MIB Objects for Viewing the System Image on Flash Partitions
MIB Object OID Description MIB
chSysSwInPartitionAImg
Vers
1.3.6.1.4.1.6027.3.10.1.2.
8.1.11
List the version string of
the system image in
Flash Partition A.
Chassis MIB
chSysSwInPartitionBImg
Vers
1.3.6.1.4.1.6027.3.10.1.2.
8.1.12
List the version string of
the system image in
Flash Partition B.
Chassis MIB
Simple Network Management Protocol (SNMP) 877