The interface index is a binary number with bits that indicate the slot number, port number, interface type, and card type of theinterface. Dell Networking OS converts this binary index number to decimal, and displays it in the output of the show interfacecommand.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 unusedFor example, the index 72925242 is 100010110001100000000111010 in binary. The binary interface index for TeGigabitEthernet 1/21of 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 notgiven. 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 notgiven 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 anyreason) the interface index changes during a reload.To display the interface number, use the following command.• Display the interface index number.EXEC Privilege modeshow interfaceExample of Deriving the Interface Index NumberTo view the system image on Flash Partition A, use the chSysSwInPartitionAImgVers object or, to view the system image on FlashPartition B, use the chSysSwInPartitionBImgVers object.Table 91. MIB Objects for Viewing the System Image on Flash PartitionsMIB Object OID Description MIBchSysSwInPartitionAImgVers 1.3.6.1.4.1.6027.3.10.1.2.8.1.11 List the version string of thesystem image in Flash PartitionA.Chassis MIBchSysSwInPartitionBImgVers 1.3.6.1.4.1.6027.3.10.1.2.8.1.12 List the version string of thesystem image in Flash PartitionB.Chassis MIBThe system image can also be retrieved by performing an SNMP walk on the following OID: MIB Object is chSysSwModuleTable andthe OID is 1.3.6.1.4.1.6027.3.10.1.2.8.Dell#show interface Tengigabitethernet 1/21TenGigabitEthernet 1/21 is up, line protocol is upMonitor Port-ChannelsTo check the status of a Layer 2 port-channel, use f10LinkAggMib (.1.3.6.1.4.1.6027.3.2). In the following example, Po 1 is a switchportand Po 2 is in Layer 3 mode.Example of SNMP Trap for Monitored Port-Channels[senthilnathan@lithium ~]$ snmpwalk -v 2c -c public 10.11.1.1 .1.3.6.1.4.1.6027.3.2.1.1SNMPv2-SMI::enterprises.6027.3.2.1.1.1.1.1.1 = INTEGER: 1SNMPv2-SMI::enterprises.6027.3.2.1.1.1.1.1.2 = INTEGER: 2SNMPv2-SMI::enterprises.6027.3.2.1.1.1.1.2.1 = Hex-STRING: 00 01 E8 13 A5 C7SNMPv2-SMI::enterprises.6027.3.2.1.1.1.1.2.2 = Hex-STRING: 00 01 E8 13 A5 C8Simple Network Management Protocol (SNMP) 817
