Reference Guide

Simple Network Management Protocol (SNMP) | 793
For interface indexing, slot and port numbering begins with the binary one. If the Dell Networking system
begins slot and port numbering from 0, then the binary 1 represents slot and port 0. For example, the index
number in Figure 44-26 gives the binary 2 for the slot number, though interface TenGigabitEthernet 1/21
belongs to Slot 1. This is because the port for this example is on an E-Series which begins numbering slots
from 0. You must subtract 1 from the slot number 2, which yields 1, the correct slot number for interface 1/
21.
Note that the interface index does not change if the interface reloads or fails over. On the S-Series, if the
unit is renumbered (for any reason) the interface index will change during a reload.