Switch Alarms

Information about switch alarms

The switch software monitors switch conditions on a per-port or a switch basis. If the conditions present on the switch or a port do not match the set parameters, the switch software triggers an alarm or a system message.

By default, the switch software sends the system messages to a system message logging facility, or a syslog facility. You can also configure the switch to send Simple Network Management Protocol (SNMP) traps to an SNMP server.

External alarms

The Cisco IE3500 Rugged Series Switches support two alarm inputs and one alarm output, while the Cisco IE3500H Heavy Duty Series Switches support one alarm input and one alarm output.

The alarm input circuit is designed to sense if a dry contact is open or closed relative to the Alarm-In reference pin. The Alarm_Out is a relay with Normally Open and Normally Closed contacts.

The switch software is configured to detect faults which are used to energize the relay coil and change the state on both of the relay contacts. Normally open contacts close and normally closed contacts open.

  • Open means that the normal condition has current flowing through the contact (normally closed contact). The alarm is generated when the current stops flowing.

  • Closed means that no current flows through the contact (normally open contact). The alarm is generated when current does flow.


Note

Software can program the Alarm_In to trigger an alarm with either Open or Closed setting.

You can set the alarm severity to major, minor, or none. The severity is included in the alarm message and also sets the LED color when the alarm is triggered. The LED is red for a minor alarm and blinking red for a major alarm. If not set, the default alarm severity is minor.

For detailed information about the alarm connector, LEDs, alarm circuit and wiring installation, alarm ratings and ports, see the Hardware Installation Guide.

Power supply alarms

Cisco IE3500 Rugged Series Switches

The Cisco IE3500 Rugged Series Switches have two power supply slots that contain DC power supplies. One input is used for system operation, while the second input is optional for redundancy, and the system cannot share power between these two inputs. The switch LEDs display the status and type of power supplied to each slot. The DC-power supplies have two DC inputs (DC A and DC B).

The default power supply configuration is to have one power supply installed in slot 1 and the software configured for no power-supply dual. This suppresses any alarms triggered by not having two power supplies installed. When the switch is operating with two power supplies, we recommend you enter the power-supply dual global configuration command to trigger an alarm when one is missing or inoperable.

When the switch detects a power supply fault, it triggers an LED indicator and sends a system message. Power-supply alarm indications are sent when a power supply is missing, has no input, or has insufficient output. Some of these alarm conditions are configurable.

The Cisco IE3500H Heavy Duty Series Switches

The Cisco IE3500H Heavy Duty Series Switches support a single DC power inputs. The power supply operates within a voltage range of 85-264V AC or 20-110V DC, delivers a 54V DC output and provides 360W of total power at 70°C.


Note

The Cisco IE3500H Heavy Duty Series Switches does not support power supply alarm.

Power-Supply-Missing Alarms

If you are operating the Cisco IE3500 Rugged Series Switch with a single power supply (DC), you can suppress any alarm conditions associated with a missing power supply. Entering the no power-supply dual global configuration command (the default) specifies that only one power supply is expected to be present. Then the switch does not generate an alarm that a power supply is missing. The no power-supply dual command controls only the sending of messages about the absence of a second power supply or the absence of input to the second power supply. The software detects whether a power supply is present and if there is an input voltage. When there is input, the software can detect if there is output voltage.

If you operate the Cisco IE3500 Rugged Series Switches with two power supplies, enter the power-supply dual global configuration command to configure the switch to send a message when one power supply is missing.

Global status monitoring alarms

The switch processes alarms related to temperature and power supply conditions, referred to as global or facility alarms.

Table 1. Global status monitoring alarms

Alarm

Description

Power supply alarm

By default, the switch monitors a single power supply. If you configure a dual power supply, an alarm triggers if one power supply fails. You can configure the power supply alarm to be connected to the hardware relays. For more information, see the Configure power supply alarms.

Temperature alarms

The switch contains one temperature sensor with a primary and secondary temperature setting. The sensor monitors the environmental conditions inside the switch.

The primary and secondary temperature alarms can be set as follows:

  • 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 Configure switch temperature alarms.

SD-Card

By default the alarm is disabled.

FCS error hysteresis threshold

The Ethernet standard calls for a maximum bit-error rate of 10-8. 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, 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. For more information, see the Configure FCS error threshold.

Port status monitoring alarms

The switch can also monitor the status of the Ethernet ports and generate alarm messages based on the alarms listed in port status monitoring alarms table. To save user time and effort, it supports changeable alarm configurations by using alarm profiles. You can create a number of profiles and assign one of these profiles to each Ethernet port.

Alarm profiles provide a mechanism for you to enable or disable alarm conditions for a port and associate the alarm conditions with one or both alarm relays. You can also use alarm profiles to set alarm conditions to send alarm traps to an SNMP server and system messages to a syslog server. The alarm profile defaultPort is applied to all interfaces in the factory configuration (by default).


Note

You can associate multiple alarms to one relay or one alarm to both relays.

Port status monitoring alarms table given below lists the port status monitoring alarms and their descriptions and functions. Each fault condition is assigned a severity level based on the Cisco IOS System Error Message Severity Level.

Table 2. Port status monitoring alarms

Alarm List ID

Alarm

Description

1

Link Fault alarm

The switch generates a link fault alarm when problems with a port physical layer cause unreliable data transmission. A typical link fault condition is loss of signal or clock. The link fault alarm is cleared automatically when the link fault condition is cleared. The severity for this alarm is error condition, level 3.

2

Port not Forwarding alarm

The switch generates a port not-forwarding alarm when a port is not forwarding packets. This alarm is cleared automatically when the port begins to forward packets. The severity for this alarm is warning, level 4.

3

Port not Operating alarm

The switch generates a port not-operating alarm when a port fails during the startup self-test. When triggered, the port not-operating alarm is only cleared when the switch is restarted and the port is operational. The severity for this alarm is error condition, level 3.

4

FCS Bit Error Rate alarm

The switch generates an FCS bit error-rate alarm when the actual FCS bit error-rate is close to the configured rate. You can set the FCS bit error-rate by using the interface configuration CLI for each of the ports. For more information, see the Configure FCS error threshold. The severity for this alarm is error condition, level 3.

Trigger alarm options

The switch supports these methods for triggering alarms:

  • Configurable Relay

    The switch is equipped with one independent alarm relay that can be triggered by alarms for global, port status and SD flash card conditions. You can configure the relay to send a fault signal to an external alarm device, such as a bell, light, or other signaling device. You can associate any alarm condition with the alarm relay. Each fault condition is assigned a severity level based on the Cisco IOS System Error Message Severity Level.

    For more information on configuring the relay, see the Configure power supply alarms.

  • SNMP Traps

    SNMP is an application-layer protocol that provides a message format for communication between managers and agents. The SNMP system consists of an SNMP manager, an SNMP agent, and a management information base (MIB).

  • The snmp-server enable traps command can be changed so that the user can send alarm traps to an SNMP server. You can use alarm profiles to set environmental or port status alarm conditions to send SNMP alarm traps. For more information, see the Enable SNMP traps.

  • Syslog Messages

    You can use alarm profiles to send system messages to a syslog server. For more information, see the Configure power supply alarms.

Default switch alarm settings

Table 3. Default switch alarm settings

Alarm

Default Setting

Global

Power supply alarm

Enabled in switch single power mode. No alarm.

In dual-power supply mode, the default alarm notification is a system message to the console.

Primary temperature alarm

Enabled for switch temperature range of 203°F (95oC) maximum to –4°F (–20oC) minimum.

The primary switch temperature alarm is associated with the major relay.

Secondary temperature alarm

Disabled.

Output relay mode alarm

Normally deenergized. The alarm output has switched off or is in an off state.

Port

Link fault alarm

Disabled on all interfaces.

Port not forwarding alarm

Disabled on all interfaces.

Port not operating alarm

Enable on all interfaces.

FCS bit error rate alarm

 Disabled on all interfaces.

Configure switch alarms

Configure external alarms

Use this task to configure the alarms on Cisco IE3500 Series Switch


Note

The Cisco IE3500H Heavy Duty Series Switches supports one alarm inputs and one alarm output.

Procedure

  Command or Action Purpose

Step 1

Switch#configure terminal

Enter global configuration mode

Step 2

Switch(config)#alarm contact contact-number description string

Example:

Switch(config)#alarm contact 1 description door sensor

(Optional) Configures a description for the alarm contact number.

  • The contact-number value is from 1 to 4.

  • The description string is up to 80 alphanumeric characters in length and is included in any generated system messages.

Step 3

Switch(config)#alarm contact { contact-number| all} { severity{ major / minor / none} | { closed/ open} }

Example:

Switch(config)#alarm contact 1 severity major

Configures the trigger and severity for an alarm contact number or for all contact numbers.

  • Enter a contact number (1 to 4) or specify that you are configuring all alarms.

  • For severity, enter major, minor or none. If you do not configure a severity, the default is minor.

  • For trigger, enter open or closed. If you do not configure a trigger, the alarm is triggered when the circuit is closed.

Step 4

Switch(config)# alarm relay-mode energized

(Optional) Configures the output relay mode to energized.

Step 5

Switch#show env alarm-contact

Example:

  • The given output of the show env alarm-contact command is from the Cisco IE3500 Rugged Series Switch. 

    Switch#show env alarm-contact
ALARM CONTACT 1
Status: not asserted
Description: door sensor
Severity: major
Trigger: closed
ALARM CONTACT 2
Status: not asserted
Description: external alarm contact 2
Severity: minor
Trigger: closed

  • The given output of the show env alarm-contact command is from the Cisco IE3500H Heavy Duty Series Switch. 

    Switch#sh env alarm-contact 
Switch: 1
ALARM CONTACT 1
   Status:      not asserted
   Description: external alarm contact 1
   Severity:    minor
   Trigger:     closed

(Optional) Verifies the configured alarm contacts.

Step 6

Switch(config)#copy running-config startup-config

Saves your entries in the configuration file.

Configure power supply alarms

Use this task to configure the power supply alarms on the Cisco IE3500 Rugged Series Switches.


Note

The Cisco IE3500H Heavy Duty Series Switches does not support power supply alarm.

Procedure

  Command or Action Purpose

Step 1

Switch(config)#power-supply dual

Configures dual power supplies.

Step 2

Switch(config)#alarm facility power-supply disable

Disables the power supply alarm.

Step 3

Switch(config)#alarm facility power-supply relay major

Example:

Switch(config)#alarm contact 1 severity major

(Optional) Associates the power supply alarm to the relay.

Step 4

Switch#alarm facility power-supply notifies

(Optional) Sends power supply alarm traps to an SNMP server.

Step 5

Switch#alarm facility power-supply syslog

(Optional) Sends power supply alarm traps to a syslog server.

Step 6

Switch#show facility-alarm status

Example:

Switch#show env power
POWER SUPPLY A is DC OK
POWER SUPPLY B is DC FAULTY <--

Displays the switch power status

Step 7

Switch#show facility-alarm status

Example:

Switch#show facility-alarm status
Source Severity Description Relay Time
Switch MAJOR 5 Redundant Pwr missing or failed NONE Mar 01
1993 00:23:52

Displays all generated alarms for the switch.

Step 8

Switch#show alarm settings

Example:

Switch#show alarm settings
Alarm relay mode: De-energized
Power Supply
Alarm Enabled
Relay
Notifies Disabled
Syslog Enabled
Temperature-Primary
Alarm Enabled
Thresholds MAX: 95C MIN: -20C
Relay MAJ
Notifies Enabled
Syslog Enabled
Temperature-Secondary
Alarm Disabled
Threshold
Relay
Notifies Disabled
Syslog Disabled
SD-Card
Alarm Disabled
Relay
Notifies Disabled
Syslog Enabled
Input-Alarm 1
Alarm Enabled
Relay
Notifies Disabled
Syslog Enabled
Input-Alarm 2
Alarm Enabled
Relay
Notifies Disabled
Syslog Enabled

Verifies the configuration.

Step 9

Switch(config)#copy running-config startup-config

(Optional) Saves your entries in the configuration file.

Configure switch temperature alarms

Use this task to configure the temperature alarms on Cisco IE3500 Series Switch.

Procedure

  Command or Action Purpose

Step 1

Switch(config)#alarm facility temperature { primary| secondary} high threshold

Example:

Switch(config)#alarm facility temperature secondary high 45

Configures the high temperature threshold value.

Note

 

The threshold range is from –238°F (–150°C) to 572°F (300°C).

Step 2

Switch(config)#alarm facility temperature primary low threshold

Example:

Switch(config)#alarm facility temperature primary low 10

Configures the low temperature threshold value.

Note

 

The threshold range is from –328°F (–200°C) to 482°F (250°C).

Step 3

Switch# show alarm settings

Example:

The given output of the show alarm settings command is from the Cisco IE3500H Heavy Duty Series Switch. 

Switch#show alarm settings
Alarm relay mode: Positive 
Temperature-Primary
         Alarm                   Enabled
         Thresholds              MAX: 80C                MIN:  0C
         Relay                   MAJ
         Notifies                Enabled
         Syslog                  Enabled
Temperature-Secondary
         Alarm                   Disabled
         Threshold  
         Relay 
         Notifies                Disabled
         Syslog                  Disabled
SD-Card
         Alarm                   Disabled
         Relay 
         Notifies                Disabled
         Syslog                  Enabled
Input-Alarm 1
         Alarm                   Enabled
         Relay 
         Notifies                Disabled
         Syslog                  Enabled
PTP
         Alarm                   Disabled
         Relay 
         Notifies                Disabled
         Syslog                  Disabled
HSR
         Alarm                   Disabled
         Relay 
         Notifies                Disabled
         Syslog                  Disabled
DLR
         Alarm                   Disabled
         Relay 
         Notifies                Disabled
         Syslog                  Disabled

(Optional) Verifies the configuration.

Step 4

Switch(config)#copy running-config startup-config

Saves your entries in the configuration file.

Associate temperature alarms to a relay

By default, the primary temperature alarm is associated to the relay.

You can use the alarm facility temperature global configuration command to associate the primary temperature alarm to an SNMP trap, or a syslog message, or to associate the secondary temperature alarm to the relay, an SNMP trap, or a syslog message.


Note

The single relay on the switch is called the major relay.

Use this task to associate temperature alarms to a relay on Cisco IE3500 Series Switch.

Procedure

Step 1

Switch(config)#alarm facility temperature { primary | secondary} relay major

Associates the primary or secondary temperature alarm to the relay.

Step 2

Switch(config)#alarm facility temperature { primary | secondary} notifies

Sends primary or secondary temperature alarm traps to an SNMP server.

Step 3

Switch(config)#alarm facility temperature { primary | secondary} syslog

Sends primary or secondary temperature alarm traps to a syslog server.

(Optional) Use the no alarm facility temperature secondary command to disable the secondary temperature alarm.

Step 4

Switch#show alarm settings

Example:

The output of the show env alarm-contact command is from the Cisco IE3500 Rugged Series Switch. 

Switch#show alarm settings
Alarm relay mode: De-energized
Power Supply
Alarm Enabled
Relay
Notifies Disabled
Syslog Enabled
Temperature-Primary
Alarm Enabled
Thresholds MAX: 95C MIN: -20C
Relay MAJ
Notifies Enabled
Syslog Enabled
Temperature-Secondary
Alarm Disabled
Threshold
Relay
Notifies Disabled
Syslog Disabled
SD-Card
Alarm Disabled
Relay
Notifies Disabled
Syslog Enabled
Input-Alarm 1
Alarm Enabled
Relay
Notifies Disabled
Syslog Enabled
Input-Alarm 2
Alarm Enabled
Relay
Notifies Disabled
Syslog Enabled

Verifies the configuration.

Step 5

Switch(config)#copy running-config startup-config to

(Optional) Saves your entries in the configuration file.

Configure FCS bit error rate alarm

Configure FCS error threshold

Use this task to set the FCS bit error-rate alarm when the actual rate is close to the configured rate on Cisco IE3500 Series Switch.

Procedure

  Command or Action Purpose

Step 1

Switch(config)#interface interface-id

Example:

Switch(config)#interface gigabitethernet1/1

Enters the desired interface and switch to interface configuration mode.

Step 2

Switch(config)#fcs-threshold value

Example:

Switch(config)#fcs-threshold 10

Sets the FCS error rate

For value, the range is 6 to 11 to set a maximum bit error rate of 10-6 to 10-11.

By default, the FCS bit error rate is 10-8.

Step 3

Switch#show env alarm-contact

Example:

The output of the show env alarm-contact command is from the Cisco IE3500H Heavy Duty Series Switch. 

Switch#show env alarm-contact

ALARM CONTACT 1
Status: not asserted
Description: door sensor
Severity: major
Trigger: closed
ALARM CONTACT 2
Status: not asserted
Description: external alarm contact 2
Severity: minor
Trigger: closed

(Optional) Verifies the configured alarm contacts.

Step 4

(Optional) Use the copy running-config startup-config to save your entries in the configuration file. 

Switch(config)#copy running-config startup-config

Configure FCS error hysteresis threshold

The hysteresis setting prevents the toggle of an alarm when the actual bit error-rate fluctuates near the configured rate. The FCS hysteresis threshold is applied to all ports of a switch.

Use this task to set the error hysteresis threshold on Cisco IE3500 Series Switch.

Procedure

  Command or Action Purpose

Step 1

Switch(config)#alarm facility fcs-hysteresis percentage

Example:

Switch(config)#alarm facility fcs-hysteresis 10

Sets the hysteresis percentage for the Cisco IE3500 Series Switch.

For percentage, the range is 1 to 10. The default value is 10 percent

Step 2

Switch#show env alarm-contact

Example:

The output of the show env alarm-contact command is from the Cisco IE3500H Heavy Duty Series Switch. 

Switch#show env alarm-contact

ALARM CONTACT 1
Status: not asserted
Description: door sensor
Severity: major
Trigger: closed
ALARM CONTACT 2
Status: not asserted
Description: external alarm contact 2
Severity: minor
Trigger: closed

(Optional) Verifies the configured alarm contacts.

Step 3

Switch(config)#copy running-config startup-config

(Optional) Saves your entries in the configuration file.

Configure alarm profiles

Use this task to create alarms profile on Cisco IE3500 Series Switch.

Procedure

  Command or Action Purpose

Step 1

Switch(config)#alarm- profile name

Example:

Switch(config)#alarm-profile fastE

Creates the new profile or identifies an existing profile, and enter alarm profile configuration mode.

When you create a new alarm profile, none of the alarms are enabled.

Note

 

The only alarm enabled in the defaultPort profile is the Port not operating alarm.

Step 2

Switch(config-alarm-profile)#alarm { fcs-error | link-fault | not-forwarding | not-operating

Example:

Switch(config-alarm-profile)#alarm fcs-error

(Optional) Adds or modifies alarm parameters for a specific alarm.

Step 3

Switch(config-alarm-profile)#notifies { fcs-error | link-fault | not-forwarding | not-operating

Example:

Switch(config-alarm-profile)#notifies not-forwarding

(Optional) Configures the alarm to send an SNMP trap to an SNMP server.

Step 4

Switch(config-alarm-profile)#relay-major { fcs-error | link-fault | not-forwarding | not-operating

Example:

Switch(config-alarm-profile)#relay major link-fault

(Optional) Configures the alarm to send an alarm trap to the relay.

Step 5

Switch(config-alarm-profile)#syslog { fcs-error | link-fault | not-forwarding | not-operating

Example:

Switch(config-alarm-profile)#syslog not-forwarding

(Optional) Configures the alarm to send an alarm trap to a syslog server.

Step 6

Switch#show env alarm-contact

Example:

The output of the show env alarm-contact command is from the Cisco IE3500H Heavy Duty Series Switch. 

Switch#show env alarm-contact

ALARM CONTACT 1
Status: not asserted
Description: door sensor
Severity: major
Trigger: closed
ALARM CONTACT 2
Status: not asserted
Description: external alarm contact 2
Severity: minor
Trigger: closed

(Optional) Verifies the configured alarm contacts.

Step 7

Switch(config)#copy running-config startup-config

(Optional) Saves your entries in the configuration file.

Attach alarm profile to a specific port

Use this task to attach alarm profile to a specific port on Cisco IE3500 Series Switch.

Procedure

  Command or Action Purpose

Step 1

Switch(config)#interface port-interface

Enters interface configuration mode.

Step 2

Switch(config)#alarm- profile name

Example:

Switch(config)#alarm profile fastE

Attaches the specified profile to the interface.

Step 3

Switch#show env alarm-contact

Example:

The output of the show env alarm-contact command is from the Cisco IE3500H Heavy Duty Series Switch. 

Switch#show env alarm-contact

ALARM CONTACT 1
Status: not asserted
Description: door sensor
Severity: major
Trigger: closed
ALARM CONTACT 2
Status: not asserted
Description: external alarm contact 2
Severity: minor
Trigger: closed

(Optional) Verifies the configured alarm contacts.

Step 4

Switch(config)#copy running-config startup-config

(Optional) Saves your entries in the configuration file.

Enable SNMP traps

Use this task to enable SNMP traps on Cisco IE3500 Series Switch.

Procedure

  Command or Action Purpose

Step 1

Switch(config)#snmp-server enable traps alarms

Enables the switch to send SNMP traps.

Step 2

Switch#show env alarm-contact

Example:

The output of the show env alarm-contact command is from the Cisco IE3500 Rugged Series Switch. 

Switch#show env alarm-contact
ALARM CONTACT 1
Status: not asserted
Description: door sensor
Severity: major
Trigger: closed
ALARM CONTACT 2
Status: not asserted
Description: external alarm contact 2
Severity: minor
Trigger: closed

(Optional) Verifies the configured alarm contacts.

Step 3

Switch(config)#copy running-config startup-config

(Optional) Saves your entries in the configuration file.

Monitor and maintain switch alarms status

Use the show commands as required to display the switch alarms status.

  • Use the show alarm profile [name] to display all alarm profiles in the system or a specified profile.

  • Use the show alarm settings to display all global alarm settings on the switch.

    • The given output of the show alarm settings command is from the Cisco IE3500 Rugged Series Switch. 

      Switch#show alarm settings
Alarm relay mode: De-energized 
Power Supply
         Alarm                   Enabled
         Relay 
         Notifies                Disabled
         Syslog                  Enabled
Temperature-Primary
         Alarm                   Enabled
         Thresholds              MAX: 95C                MIN:  -20C
         Relay                   MAJ
         Notifies                Enabled
         Syslog                  Enabled
Temperature-Secondary
         Alarm                   Disabled
         Threshold  
         Relay 
         Notifies                Disabled
         Syslog                  Disabled
SD-Card
         Alarm                   Disabled
         Relay 
         Notifies                Disabled
         Syslog                  Enabled
Input-Alarm 1
         Alarm                   Enabled
         Relay 
         Notifies                Disabled
         Syslog                  Enabled
Input-Alarm 2
         Alarm                   Enabled
         Relay 
         Notifies                Disabled
         Syslog                  Enabled

    • The given output of the show alarm settings command is from the Cisco IE3500H Heavy Duty Series Switch. 

      Switch#show alarm settings
Alarm relay mode: Positive 
Temperature-Primary
         Alarm                   Enabled
         Thresholds              MAX: 80C                MIN:  0C
         Relay                   MAJ
         Notifies                Enabled
         Syslog                  Enabled
Temperature-Secondary
         Alarm                   Disabled
         Threshold  
         Relay 
         Notifies                Disabled
         Syslog                  Disabled
SD-Card
         Alarm                   Disabled
         Relay 
         Notifies                Disabled
         Syslog                  Enabled
Input-Alarm 1
         Alarm                   Enabled
         Relay 
         Notifies                Disabled
         Syslog                  Enabled
PTP
         Alarm                   Disabled
         Relay 
         Notifies                Disabled
         Syslog                  Disabled

  • Use the show env { alarm-contact | all | power | temperature} to display the status of environmental facilities on the switch.

    The output of the show env power command is from the Cisco IE3500 Rugged Series Switch. 

    Switch#show env power 
POWER SUPPLY A is DC OK 
POWER SUPPLY B is DC FAULTY <-- 
Switch# show hard led 
SWITCH: 1 
SYSTEM: GREEN 
ALARM : ALT_RED_BLACK <--

  • Use the show facility-alarm status { critical | info | major | minor} to display generated alarms on the switch.