- Preface
- Software Licensing
- The Cisco IOS command-line interface (CLI)
- Configuring Interfaces
- Switch Alarms
- Initial Switch Configuration (IP address assignments and DHCP autoconfiguration)
- How to Setup and Use the Cisco Configuration Engine
- How to Create and Manage Switch Clusters
- Performing Switch Administration
- Configuring Precision Time Protocol (PTP)
- Configuring PROFINET
- Common Industrial Protocol (CIP)
- Configuring SDM Templates
- Configuring Switch-Based Authentication
- Configuring IEEE 802.1x Port-Based Authentication
- MACsec
- Web-Based Authentication
- Configuring Smartports Macros
- Configuring SGACL Monitor Mode and SGACL Logging
- Configuring SGT Exchange Protocol over TCP (SXP) and Layer 3 Transport
- Configuring VLANs
- VLAN Trunking Protocol (VTP)
- Configuring Voice VLAN
- How to Configure Spanning Tree Protocol (STP)
- Configuring MSTP
- Configuring Optional Spanning-Tree Features
- Configuring Resilient Ethernet Protocol
- Configuring the FlexLinks and the MAC Address-Table Move Update
- Configuring DHCP
- Dynamic Address Resolution Protocol (ARP)
- Configuring IP Source Guard
- How to Configure Internet Group Management Protocol (IGMP) and Multicast VLAN Registration (MVR)
- Configuring Port-Based Traffic Control
- Configuring SPAN and RSPAN
- Configuring LLDP, LLDP-MED, and Wired Location Service
- One-to-one (1:1) Layer 2 Network Address Translation (NAT)
- How to Configure CDP
- Configuring UniDirectional Link Detection (UDLD)
- Configuring RMON
- Configuring System Message Logging
- Configuring Simple Network Management Protocol (SNMP)
- Network Security with ACLs
- Configuring Quality of Service (QoS)
- Configuring Static IP Unicast Routing
- Configuring IPv6 Host Functions
- Configuring Link State Tracking
- Configuring IP multicast routing
- Configuring Multicast Source Discovery Protocol (MSDP)
- Configuring Multicast Listener Discovery (MLD) snooping
- Configuring HSRP and VRRP
- Configuring IPv6 access control lists (ACLs)
- Configuring Embedded Event Manager (EEM)
- IP Unicast Routing
- IPv6 Unicast Routing
- Unicast Routing Overview
- Configuring Cisco IOS IP SLAs Operations
- Configuring Dying-Gasp
- How to Configure Enhanced Object Tracking
- Configuring MODBUS TCP
- Configuring Ethernet CFM
- Working with the Flash File System
- How to Configure EtherChannels
- Troubleshooting
- How to use a Secure Digital (SD) flash memory module (SD card)
Cisco Industrial Ethernet 4000, 4010 and 5000 Switch Software Configuration Guide
Bias-Free Language
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
- Updated:
- June 24, 2022
Chapter: Switch Alarms
- Information About Switch Alarms
- How to Configure Switch Alarms
- Monitoring and Maintaining Switch Alarms Status
- Configuration Examples for Switch Alarms
- Additional References
Configuring 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.
Global Status Monitoring Alarms
The switch processes alarms related to temperature and power supply conditions, referred to as global or facility alarms.
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The switch monitors dual power supply levels. If there are two power supplies installed in the switch, an alarm triggers if a power supply fails. The alarm is automatically cleared when both power supplies are working. You can configure the power supply alarm to be connected to the hardware relays. For more information, see Configuring the Power Supply Alarms. |
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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: ■ ■ For more information, see Configuring the Switch Temperature Alarms. |
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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.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. See Configuring the FCS Bit Error Rate Alarm for more information.
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 Table 11. 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.
Table 11 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.
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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. |
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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. |
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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. |
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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. See Configuring the FCS Bit Error Rate Alarm for more information. The severity for this alarm is error condition, level 3. |
Triggering Alarm Options
The switch supports these methods for triggering alarms:
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.
See Configuring the Power Supply Alarms for more information on configuring the relay.
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. See Enabling SNMP Traps for more information.
You can use alarm profiles to send system messages to a syslog server. See Configuring the Power Supply Alarms for more information.
Default Switch Alarm Settings
How to Configure Switch Alarms
Configuring the Power Supply Alarms
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Configuring the Switch Temperature Alarms
Associating the 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.
Configuring the FCS Bit Error Rate Alarm
Setting the FCS Error Threshold
The switch generates an FCS bit error-rate alarm when the actual rate is close to the configured rate.
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Enters the interface to be configured, and enters interface configuration mode. |
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| For value, the range is 6 to 11 to set a maximum bit error rate of 10-6 to 10-11. |
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Setting the 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.
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Sets the hysteresis percentage for the switch. For percentage, the range is 1 to 10. The default value is 10 percent. |
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Configuring Alarm Profiles
Creating an Alarm Profile
You can use the alarm profile global configuration command to create an alarm profile or to modify an existing profile. 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.
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Creates the new profile or identifies an existing profile, and enters alarm profile configuration mode. |
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Modifying an Alarm Profile
You can modify an alarm profile from alarm profile configuration mode.
You can enter more than one alarm type separated by a space.
Attaching an Alarm Profile to a Specific Port
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Enabling SNMP Traps
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Monitoring and Maintaining Switch Alarms Status
Configuration Examples for Switch Alarms
Configuring External Alarms: Example
This example configures alarm input 1 named door sensor to assert a major alarm when the door circuit is closed and then displays the status and configuration for all alarms:
Associating Temperature Alarms to a Relay: Examples
This example sets the secondary temperature alarm to the major relay, with a high temperature threshold value of 113oF (45oC). All alarms and traps associated with this alarm are sent to a syslog server and an SNMP server.
This example sets the first (primary) temperature alarm to the major relay. All alarms and traps associated with this alarm are sent to a syslog server.
Configuring a Dual Power Supply: Examples
This example shows how to configure two power supplies:
These examples show how to display information when two power supplies are not present which results in a triggered alarm.
Displaying Alarm Settings: Example
Additional References
The following sections provide references related to switch administration:
Related Documents
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Standards
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No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
MIBs
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To locate and download MIBs using Cisco IOS XR software, use the Cisco MIB Locator found at the following URL and choose a platform under the Cisco Access Products menu: http://cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml |
RFCs
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No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature. |
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