Reference Guide

Simple Network Management Protocol | 679
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 37-27 gives the binary 2 for the slot number, though interface GigabitEthernet 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.
Viewing Alarm LED Status Using SNMP
The following table specifies the alarm notification settings (minor, major, and off). An example of a minor
alarm event would be a rise in temperature above the minimum threshold. An example of a major alarm
event would be a rise in temperature above the maximum threshold.
The system alarm LED status can be retrieved using an SNMP query as shown in the following output
example:
Figure 37-28. SNMP Alarm Query
Table 37-7. MIB Objects for Viewing System Alarm LED Status
MIB Object OID Description MIB
chStackUnitAlarmLEDStatus 1.3.6.1.4.1.6027.3.10.1.2.2.1.35 LED status of system alarms on
unit.
Values: 1 = off
2 = minor
3 = major
Chassis MIB
>snmpwalk -v2c -c techpubs 10.11.131.162 .1.3.6.1.4.1.6027.3.10.1.2.2.1.35
SNMPv2-SMI::enterprises.6027.3.10.1.2.2.1.35.1 = INTEGER: 1