Cisco IE-3000-8TC Software Configuration Guide - Page 68

Understanding IE 3000 Switch Alarms Chapter 3 Configuring Cisco IE 3000 Switch Alarms Global Status Monitoring Alarms The IE 3000 switch can process alarms related to temperature and power supply conditions, referred to as global or facility alarms. Table 3-1 lists the global alarms, their descriptions, and functions. Table 3-1 IE 3000 Global Status Monitoring Alarms Alarm Power Supply Alarm Temperature Alarms Description The switch monitors dual DC power supply levels. If the system is configured to operate in a dual power mode, an alarm triggers if a power supply fails or is missing. The alarm is automatically cleared when both power supplies are present or working. You can configure the power supply alarm to be connected to the hardware relays. For more information, see the "Configuring the Power Supply Alarm" section on page 3-5. The switch contains two temperature sensors that monitor the environmental conditions inside the switch. • The primary alarm is enabled automatically to trigger both at a low temperature, -4°F (-20°C) and a high temperature, 203°F (95°C). It cannot be disabled. By default, the primary temperature alarm is associated with the major relay. • The secondary alarm triggers when the system temperature is higher or lower than the configured high and low temperature thresholds. The secondary alarm is disabled by default. For more information, see the "Configuring the Switch Temperature Alarms" section on page 3-6. FCS Error Hysteresis Threshold The Ethernet standard calls for a maximum bit-error rate of 10-8. In the IE 3000 switch, the bit error-rate range is from 10-6 to 10-11. The bit error-rate input to the switch is a positive exponent. If you want to configure the bit error-rate of 10-9, you enter the value 9 for the exponent. By default, the FCS bit error-rate is 10-8. You can set the FCS error hysteresis threshold to prevent the toggle of the alarm when the actual bit-error rate fluctuates near the configured rate. The hysteresis threshold is defined as the ratio between the alarm clear threshold to the alarm set threshold, expressed as a percentage value. For example, if the FCS bit error-rate alarm value is configured to 10-8, that value is the alarm set threshold. To set the alarm clear threshold at 5*10-10, the hysteresis, value h, is determined as follows: h = alarm clear threshold / alarm set threshold h = 5*10-10 / 10-8 = 5*10-2 = 0.05 = 5 percent The FCS hysteresis threshold is applied to all ports on the switch. The allowable range is from 1 to 10 percent. The default value is 10 percent. See the "Configuring the FCS Bit Error Rate Alarm" section on page 3-8 for more information. Port Status Monitoring Alarms The IE 3000 switch can also monitor the status of the Ethernet ports and generate alarm messages based on the alarms listed in Table 3-2. To save user time and effort, the switch supports changing alarm configurations by using alarm profiles. You can create a number of profiles and assign one of these profiles to each Ethernet port. Cisco IE 3000 Switch Software Configuration Guide 3-2 OL-13018-03