
# Arista by SNMP

## Overview

This template is designed for the effortless deployment of Arista monitoring by Zabbix via SNMP and doesn't require any external scripts.

## Requirements

Zabbix version: 7.4 and higher.

## Tested versions

This template has been tested on:
- Arista DCS-7050Q-16 EOS version 4.12.6

## Configuration

> Zabbix should be configured according to the instructions in the [Templates out of the box](https://www.zabbix.com/documentation/7.4/manual/config/templates_out_of_the_box) section.

## Setup

Refer to the vendor documentation.

### Macros used

|Name|Description|Default|
|----|-----------|-------|
|{$PSU_CRIT_STATUS}||`2`|
|{$FAN_CRIT_STATUS}||`3`|
|{$VFS.FS.FSNAME.NOT_MATCHES}|<p>Used in filesystem discovery. Can be overridden on the host or linked template level.</p>|`^(/dev\|/sys\|/run\|/proc\|.+/shm$)`|
|{$VFS.FS.FSNAME.MATCHES}|<p>Used in filesystem discovery. Can be overridden on the host or linked template level.</p>|`.+`|
|{$VFS.FS.FSTYPE.NOT_MATCHES}|<p>Used in filesystem discovery. Can be overridden on the host or linked template level.</p>|`CHANGE_IF_NEEDED`|
|{$VFS.FS.FSTYPE.MATCHES}|<p>Used in filesystem discovery. Can be overridden on the host or linked template level.</p>|`.*(\.4\|\.9\|hrStorageFixedDisk\|hrStorageFlashMemory)$`|
|{$VFS.FS.FREE.MIN.CRIT}|<p>The critical threshold of the filesystem utilization.</p>|`5G`|
|{$VFS.FS.FREE.MIN.WARN}|<p>The warning threshold of the filesystem utilization.</p>|`10G`|
|{$VFS.FS.PUSED.MAX.CRIT}||`90`|
|{$VFS.FS.PUSED.MAX.WARN}||`80`|
|{$CPU.UTIL.CRIT}||`90`|
|{$MEMORY.UTIL.MAX}|<p>The warning threshold of the "Physical memory: Memory utilization" item.</p>|`90`|
|{$MEMORY.TYPE.NOT_MATCHES}|<p>This macro is used in memory discovery. Can be overridden on the host or linked template level if you need to filter out results.</p>|`CHANGE_IF_NEEDED`|
|{$MEMORY.TYPE.MATCHES}|<p>This macro is used in memory discovery. Can be overridden on the host or linked template level.</p>|`.*(\.2\|hrStorageRam)$`|
|{$MEMORY.NAME.MATCHES}|<p>This macro is used in memory discovery. Can be overridden on the host or linked template level.</p>|`.*`|
|{$MEMORY.NAME.NOT_MATCHES}|<p>Filter is overridden to ignore RAM(Cache) and RAM(Buffers) memory objects.</p>|`(Buffer\|Cache)`|
|{$SNMP.TIMEOUT}|<p>Time interval for the SNMP availability trigger.</p>|`5m`|
|{$ICMP_LOSS_WARN}|<p>Warning threshold of ICMP packet loss in %.</p>|`20`|
|{$ICMP_RESPONSE_TIME_WARN}|<p>Warning threshold of the average ICMP response time in seconds.</p>|`0.15`|
|{$IF.ERRORS.WARN}|<p>Warning threshold of error packet rate. Can be used with interface name as context.</p>|`2`|
|{$IF.UTIL.MAX}||`90`|
|{$IFCONTROL}||`1`|
|{$NET.IF.IFNAME.MATCHES}||`^.*$`|
|{$NET.IF.IFNAME.NOT_MATCHES}|<p>Filter out loopbacks, nulls, docker veth links and docker0 bridge by default</p>|`Macro too long. Please see the template.`|
|{$NET.IF.IFOPERSTATUS.MATCHES}||`^.*$`|
|{$NET.IF.IFOPERSTATUS.NOT_MATCHES}|<p>Ignore notPresent(6)</p>|`^6$`|
|{$NET.IF.IFADMINSTATUS.MATCHES}||`^.*`|
|{$NET.IF.IFADMINSTATUS.NOT_MATCHES}|<p>Ignore down(2) administrative status</p>|`^2$`|
|{$NET.IF.IFDESCR.MATCHES}||`.*`|
|{$NET.IF.IFDESCR.NOT_MATCHES}||`CHANGE_IF_NEEDED`|
|{$NET.IF.IFALIAS.MATCHES}||`.*`|
|{$NET.IF.IFALIAS.NOT_MATCHES}||`CHANGE_IF_NEEDED`|
|{$NET.IF.IFTYPE.MATCHES}||`.*`|
|{$NET.IF.IFTYPE.NOT_MATCHES}||`CHANGE_IF_NEEDED`|

### Items

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Get sensors|<p>Gets sensors with type, description, and thresholds.</p>|SNMP agent|sensors.get<p>**Preprocessing**</p><ul><li><p>JavaScript: `The text is too long. Please see the template.`</p></li></ul>|
|CPU utilization|<p>MIB: HOST-RESOURCES-MIB</p><p>The average, over the last minute, of the percentage of time that processors was not idle.</p><p>Implementations may approximate this one minute smoothing period if necessary.</p>|SNMP agent|system.cpu.util<p>**Preprocessing**</p><ul><li><p>JSON Path: `$..['{#CPU.UTIL}'].avg()`</p></li></ul>|
|Uptime (network)|<p>MIB: SNMPv2-MIB</p><p>Time (in hundredths of a second) since the network management portion of the system was last re-initialized.</p>|SNMP agent|system.net.uptime[sysUpTime.0]<p>**Preprocessing**</p><ul><li><p>Custom multiplier: `0.01`</p></li></ul>|
|Uptime (hardware)|<p>MIB: HOST-RESOURCES-MIB</p><p>The amount of time since this host was last initialized. Note that this is different from sysUpTime in the SNMPv2-MIB [RFC1907] because sysUpTime is the uptime of the network management portion of the system.</p>|SNMP agent|system.hw.uptime[hrSystemUptime.0]<p>**Preprocessing**</p><ul><li><p>Check for not supported value: `any error`</p><p>⛔️Custom on fail: Set value to: `0`</p></li><li><p>Custom multiplier: `0.01`</p></li></ul>|
|SNMP traps (fallback)|<p>The item is used to collect all SNMP traps unmatched by other snmptrap items</p>|SNMP trap|snmptrap.fallback|
|System location|<p>MIB: SNMPv2-MIB</p><p>Physical location of the node (e.g., `equipment room`, `3rd floor`). If not provided, the value is a zero-length string.</p>|SNMP agent|system.location[sysLocation.0]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `12h`</p></li></ul>|
|System contact details|<p>MIB: SNMPv2-MIB</p><p>The textual identification of the contact person for this managed node, together with information on how to contact this person. If no contact information is known, the value is the zero-length string.</p>|SNMP agent|system.contact[sysContact.0]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `12h`</p></li></ul>|
|System object ID|<p>MIB: SNMPv2-MIB</p><p>The vendor's authoritative identification of the network management subsystem contained in the entity. This value is allocated within the SMI enterprises subtree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining`what kind of box' is being managed.  For example, if vendor`Flintstones, Inc.' was assigned the subtree1.3.6.1.4.1.4242, it could assign the identifier 1.3.6.1.4.1.4242.1.1 to its `Fred Router'.</p>|SNMP agent|system.objectid[sysObjectID.0]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `12h`</p></li></ul>|
|System name|<p>MIB: SNMPv2-MIB</p><p>An administratively-assigned name for this managed node.By convention, this is the node's fully-qualified domain name. If the name is unknown, the value is the zero-length string.</p>|SNMP agent|system.name<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `12h`</p></li></ul>|
|System description|<p>MIB: SNMPv2-MIB</p><p>A textual description of the entity. This value should</p><p>include the full name and version identification of the system's hardware type, software operating-system, and</p><p>networking software.</p>|SNMP agent|system.descr[sysDescr.0]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `12h`</p></li></ul>|
|SNMP agent availability|<p>Availability of SNMP checks on the host. The value of this item corresponds to availability icons in the host list.</p><p>Possible values:</p><p>0 - not available</p><p>1 - available</p><p>2 - unknown</p>|Zabbix internal|zabbix[host,snmp,available]|
|ICMP ping|<p>The host accessibility by ICMP ping.</p><p></p><p>0 - ICMP ping fails;</p><p>1 - ICMP ping successful.</p>|Simple check|icmpping|
|ICMP loss|<p>The percentage of lost packets.</p>|Simple check|icmppingloss|
|ICMP response time|<p>The ICMP ping response time (in seconds).</p>|Simple check|icmppingsec|

### Triggers

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: High CPU utilization|<p>CPU utilization is too high. The system might be slow to respond.</p>|`min(/Arista by SNMP/system.cpu.util,5m)>{$CPU.UTIL.CRIT}`|Warning||
|Arista: Host has been restarted|<p>Uptime is less than 10 minutes.</p>|`(last(/Arista by SNMP/system.hw.uptime[hrSystemUptime.0])>0 and last(/Arista by SNMP/system.hw.uptime[hrSystemUptime.0])<10m) or (last(/Arista by SNMP/system.hw.uptime[hrSystemUptime.0])=0 and last(/Arista by SNMP/system.net.uptime[sysUpTime.0])<10m)`|Warning|**Manual close**: Yes<br>**Depends on**:<br><ul><li>Arista: No SNMP data collection</li></ul>|
|Arista: System name has changed|<p>The name of the system has changed. Acknowledge to close the problem manually.</p>|`last(/Arista by SNMP/system.name,#1)<>last(/Arista by SNMP/system.name,#2) and length(last(/Arista by SNMP/system.name))>0`|Info|**Manual close**: Yes|
|Arista: No SNMP data collection|<p>SNMP is not available for polling. Please check device connectivity and SNMP settings.</p>|`max(/Arista by SNMP/zabbix[host,snmp,available],{$SNMP.TIMEOUT})=0`|Warning|**Depends on**:<br><ul><li>Arista: Unavailable by ICMP ping</li></ul>|
|Arista: Unavailable by ICMP ping|<p>Last three attempts returned timeout. Please check device connectivity.</p>|`max(/Arista by SNMP/icmpping,#3)=0`|High||
|Arista: High ICMP ping loss|<p>ICMP packets loss detected.</p>|`min(/Arista by SNMP/icmppingloss,5m)>{$ICMP_LOSS_WARN} and min(/Arista by SNMP/icmppingloss,5m)<100`|Warning|**Depends on**:<br><ul><li>Arista: Unavailable by ICMP ping</li></ul>|
|Arista: High ICMP ping response time|<p>Average ICMP response time is too high.</p>|`avg(/Arista by SNMP/icmppingsec,5m)>{$ICMP_RESPONSE_TIME_WARN}`|Warning|**Depends on**:<br><ul><li>Arista: High ICMP ping loss</li><li>Arista: Unavailable by ICMP ping</li></ul>|

### LLD rule Temperature discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Temperature discovery|<p>ENTITY-SENSORS-MIB::EntitySensorDataType discovery with temperature filter</p>|Dependent item|temp.discovery|

### Item prototypes for Temperature discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|{#SENSOR_INFO}: Temperature|<p>MIB: ENTITY-SENSORS-MIB</p><p>The most recent measurement obtained by the agent for this sensor.</p><p>To correctly interpret the value of this object, the associated entPhySensorType,</p><p>entPhySensorScale, and entPhySensorPrecision objects must also be examined.</p>|SNMP agent|sensor.temp.value[entPhySensorValue.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Custom multiplier: `0.1`</p></li></ul>|
|{#SENSOR_INFO}: Temperature status|<p>MIB: ENTITY-SENSORS-MIB</p><p>The operational status of the sensor {#SENSOR_INFO}</p>|SNMP agent|sensor.temp.status[entPhySensorOperStatus.{#SNMPINDEX}]|

### Trigger prototypes for Temperature discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: {#SENSOR_INFO}: Temperature is below the warning threshold|<p>This trigger uses temperature sensor values defined in the device.</p>|`max(/Arista by SNMP/sensor.temp.value[entPhySensorValue.{#SNMPINDEX}],5m) < {#THRESHOLD_LO_WARN}`|Warning|**Depends on**:<br><ul><li>Arista: {#SENSOR_INFO}: Temperature is below the critical threshold</li></ul>|
|Arista: {#SENSOR_INFO}: Temperature is below the critical threshold|<p>This trigger uses temperature sensor values defined in the device.</p>|`max(/Arista by SNMP/sensor.temp.value[entPhySensorValue.{#SNMPINDEX}],5m) < {#THRESHOLD_LO_CRIT}`|High||
|Arista: {#SENSOR_INFO}: Temperature is above the warning threshold|<p>This trigger uses temperature sensor values defined in the device.</p>|`min(/Arista by SNMP/sensor.temp.value[entPhySensorValue.{#SNMPINDEX}],5m) > {#THRESHOLD_HI_WARN}`|Warning|**Depends on**:<br><ul><li>Arista: {#SENSOR_INFO}: Temperature is above the critical threshold</li></ul>|
|Arista: {#SENSOR_INFO}: Temperature is above the critical threshold|<p>This trigger uses temperature sensor values defined in the device.</p>|`min(/Arista by SNMP/sensor.temp.value[entPhySensorValue.{#SNMPINDEX}],5m) > {#THRESHOLD_HI_CRIT}`|High||

### LLD rule Fan discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Fan discovery|<p>ENTITY-SENSORS-MIB::EntitySensorDataType discovery with rpm filter</p>|Dependent item|fan.discovery|

### Item prototypes for Fan discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|{#SENSOR_INFO}: Fan speed|<p>MIB: ENTITY-SENSORS-MIB</p><p>The most recent measurement obtained by the agent for this sensor.</p><p>To correctly interpret the value of this object, the associated entPhySensorType,</p><p>entPhySensorScale, and entPhySensorPrecision objects must also be examined.</p>|SNMP agent|sensor.fan.speed[entPhySensorValue.{#SNMPINDEX}]|
|{#SENSOR_INFO}: Fan status|<p>MIB: ENTITY-SENSORS-MIB</p><p>The operational status of the sensor {#SENSOR_INFO}</p>|SNMP agent|sensor.fan.status[entPhySensorOperStatus.{#SNMPINDEX}]|

### Trigger prototypes for Fan discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: {#SENSOR_INFO}: Fan speed is below the warning threshold|<p>This trigger uses fan sensor values defined in the device.</p>|`max(/Arista by SNMP/sensor.fan.speed[entPhySensorValue.{#SNMPINDEX}],5m) < {#THRESHOLD_LO_WARN}`|Warning|**Depends on**:<br><ul><li>Arista: {#SENSOR_INFO}: Fan speed is below the critical threshold</li><li>Arista: {#SENSOR_INFO}: Fan is in critical state</li></ul>|
|Arista: {#SENSOR_INFO}: Fan speed is below the critical threshold|<p>This trigger uses fan sensor values defined in the device.</p>|`max(/Arista by SNMP/sensor.fan.speed[entPhySensorValue.{#SNMPINDEX}],5m) < {#THRESHOLD_LO_CRIT}`|High|**Depends on**:<br><ul><li>Arista: {#SENSOR_INFO}: Fan is in critical state</li></ul>|
|Arista: {#SENSOR_INFO}: Fan speed is above the warning threshold|<p>This trigger uses fan sensor values defined in the device.</p>|`min(/Arista by SNMP/sensor.fan.speed[entPhySensorValue.{#SNMPINDEX}],5m) > {#THRESHOLD_HI_WARN}`|Warning|**Depends on**:<br><ul><li>Arista: {#SENSOR_INFO}: Fan speed is above the critical threshold</li><li>Arista: {#SENSOR_INFO}: Fan is in critical state</li></ul>|
|Arista: {#SENSOR_INFO}: Fan speed is above the critical threshold|<p>This trigger uses fan sensor values defined in the device.</p>|`min(/Arista by SNMP/sensor.fan.speed[entPhySensorValue.{#SNMPINDEX}],5m) > {#THRESHOLD_HI_CRIT}`|High|**Depends on**:<br><ul><li>Arista: {#SENSOR_INFO}: Fan is in critical state</li></ul>|
|Arista: {#SENSOR_INFO}: Fan is in critical state|<p>Please check the fan unit</p>|`count(/Arista by SNMP/sensor.fan.status[entPhySensorOperStatus.{#SNMPINDEX}],#1,"eq","{$FAN_CRIT_STATUS}")=1`|Average||

### LLD rule Voltage discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Voltage discovery|<p>ENTITY-SENSORS-MIB::EntitySensorDataType discovery with volts filter</p>|Dependent item|voltage.discovery|

### Item prototypes for Voltage discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|{#SENSOR_INFO}: Voltage|<p>MIB: ENTITY-SENSORS-MIB</p><p>The most recent measurement obtained by the agent for this sensor.</p><p>To correctly interpret the value of this object, the associated entPhySensorType,</p><p>entPhySensorScale, and entPhySensorPrecision objects must also be examined.</p>|SNMP agent|sensor.voltage.value[entPhySensorValue.{#SNMPINDEX}]|

### Trigger prototypes for Voltage discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: {#SENSOR_INFO}: Voltage is below the warning threshold|<p>This trigger uses voltage sensor values defined in the device.</p>|`max(/Arista by SNMP/sensor.voltage.value[entPhySensorValue.{#SNMPINDEX}],5m) < {#THRESHOLD_LO_WARN}`|Warning|**Depends on**:<br><ul><li>Arista: {#SENSOR_INFO}: Voltage is below the critical threshold</li></ul>|
|Arista: {#SENSOR_INFO}: Voltage is below the critical threshold|<p>This trigger uses voltage sensor values defined in the device.</p>|`max(/Arista by SNMP/sensor.voltage.value[entPhySensorValue.{#SNMPINDEX}],5m) < {#THRESHOLD_LO_CRIT}`|High||
|Arista: {#SENSOR_INFO}: Voltage is above the warning threshold|<p>This trigger uses voltage sensor values defined in the device.</p>|`min(/Arista by SNMP/sensor.voltage.value[entPhySensorValue.{#SNMPINDEX}],5m) > {#THRESHOLD_HI_WARN}`|Warning|**Depends on**:<br><ul><li>Arista: {#SENSOR_INFO}: Voltage is above the critical threshold</li></ul>|
|Arista: {#SENSOR_INFO}: Voltage is above the critical threshold|<p>This trigger uses voltage sensor values defined in the device.</p>|`min(/Arista by SNMP/sensor.voltage.value[entPhySensorValue.{#SNMPINDEX}],5m) > {#THRESHOLD_HI_CRIT}`|High||

### LLD rule Entity discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Entity discovery||SNMP agent|entity.discovery|

### Item prototypes for Entity discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|{#ENT_NAME}: Hardware model name|<p>MIB: ENTITY-MIB</p>|SNMP agent|system.hw.model[entPhysicalModelName.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|{#ENT_NAME}: Hardware serial number|<p>MIB: ENTITY-MIB</p>|SNMP agent|system.hw.serialnumber[entPhysicalSerialNum.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|

### Trigger prototypes for Entity discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: {#ENT_NAME}: Device has been replaced|<p>Device serial number has changed. Acknowledge to close the problem manually.</p>|`last(/Arista by SNMP/system.hw.serialnumber[entPhysicalSerialNum.{#SNMPINDEX}],#1)<>last(/Arista by SNMP/system.hw.serialnumber[entPhysicalSerialNum.{#SNMPINDEX}],#2) and length(last(/Arista by SNMP/system.hw.serialnumber[entPhysicalSerialNum.{#SNMPINDEX}]))>0`|Info|**Manual close**: Yes|

### LLD rule PSU discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|PSU discovery||SNMP agent|psu.discovery|

### Item prototypes for PSU discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|{#ENT_NAME}: Power supply status|<p>MIB: ENTITY-STATE-MIB</p>|SNMP agent|sensor.psu.status[entStateOper.{#SNMPINDEX}]|

### Trigger prototypes for PSU discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: {#ENT_NAME}: Power supply is in critical state|<p>Please check the power supply unit for errors</p>|`count(/Arista by SNMP/sensor.psu.status[entStateOper.{#SNMPINDEX}],#1,"eq","{$PSU_CRIT_STATUS}")=1`|Average||

### LLD rule Storage discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Storage discovery|<p>HOST-RESOURCES-MIB::hrStorage discovery with storage filter.</p>|SNMP agent|vfs.fs.discovery[snmp]|

### Item prototypes for Storage discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|{#FSNAME}: Used space|<p>MIB: HOST-RESOURCES-MIB</p><p>The amount of the storage represented by this entry that is allocated, in units of hrStorageAllocationUnits.</p>|SNMP agent|vfs.fs.used[hrStorageUsed.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Custom multiplier: `{#ALLOC_UNITS}`</p></li></ul>|
|{#FSNAME}: Total space|<p>MIB: HOST-RESOURCES-MIB</p><p>The size of the storage represented by this entry, in units of hrStorageAllocationUnits.</p><p>This object is writable to allow remote configuration of the size of the storage area in those cases where such an operation makes sense and is possible on the underlying system.</p><p>For example, the amount of main storage allocated to a buffer pool might be modified or the amount of disk space allocated to virtual storage might be modified.</p>|SNMP agent|vfs.fs.total[hrStorageSize.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Custom multiplier: `{#ALLOC_UNITS}`</p></li></ul>|
|{#FSNAME}: Space utilization|<p>The space utilization expressed in % for {#FSNAME}.</p>|Calculated|vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}]|

### Trigger prototypes for Storage discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: {#FSNAME}: Disk space is critically low|<p>Two conditions should match:<br>1. The first condition - utilization of the space should be above `{$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}`.<br>2. The second condition should be one of the following:<br>- the disk free space is less than `{$VFS.FS.FREE.MIN.CRIT:"{#FSNAME}"}`;<br>- the disk will be full in less than 24 hours.</p>|`last(/Arista by SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}])>{$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"} and ((last(/Arista by SNMP/vfs.fs.total[hrStorageSize.{#SNMPINDEX}])-last(/Arista by SNMP/vfs.fs.used[hrStorageUsed.{#SNMPINDEX}]))<{$VFS.FS.FREE.MIN.CRIT:"{#FSNAME}"} or timeleft(/Arista by SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}],1h,100)<1d)`|Average|**Manual close**: Yes|
|Arista: {#FSNAME}: Disk space is low|<p>Two conditions should match:<br>1. The first condition - utilization of the space should be above `{$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}`.<br>2. The second condition should be one of the following:<br>- the disk free space is less than `{$VFS.FS.FREE.MIN.WARN:"{#FSNAME}"}`;<br>- the disk will be full in less than 24 hours.</p>|`last(/Arista by SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}])>{$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"} and ((last(/Arista by SNMP/vfs.fs.total[hrStorageSize.{#SNMPINDEX}])-last(/Arista by SNMP/vfs.fs.used[hrStorageUsed.{#SNMPINDEX}]))<{$VFS.FS.FREE.MIN.WARN:"{#FSNAME}"} or timeleft(/Arista by SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}],1h,100)<1d)`|Warning|**Manual close**: Yes<br>**Depends on**:<br><ul><li>Arista: {#FSNAME}: Disk space is critically low</li></ul>|

### LLD rule Memory discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Memory discovery|<p>HOST-RESOURCES-MIB::hrStorage discovery with memory filter</p>|SNMP agent|vm.memory.discovery|

### Item prototypes for Memory discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|{#MEMNAME}: Used memory|<p>MIB: HOST-RESOURCES-MIB</p><p>The amount of the storage represented by this entry that is allocated, in units of hrStorageAllocationUnits.</p>|SNMP agent|vm.memory.used[hrStorageUsed.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Custom multiplier: `{#ALLOC_UNITS}`</p></li></ul>|
|{#MEMNAME}: Total memory|<p>MIB: HOST-RESOURCES-MIB</p><p>The size of the storage represented by this entry, in units of hrStorageAllocationUnits.</p><p>This object is writable to allow remote configuration of the size of the storage area in those cases where such an operation makes sense and is possible on the underlying system.</p><p>For example, the amount of main memory allocated to a buffer pool might be modified or the amount of disk space allocated to virtual memory might be modified.</p>|SNMP agent|vm.memory.total[hrStorageSize.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Custom multiplier: `{#ALLOC_UNITS}`</p></li></ul>|
|{#MEMNAME}: Memory utilization|<p>Memory utilization in %.</p>|Calculated|vm.memory.util[memoryUsedPercentage.{#SNMPINDEX}]|

### Trigger prototypes for Memory discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: {#MEMNAME}: High memory utilization|<p>The system is running out of free memory.</p>|`min(/Arista by SNMP/vm.memory.util[memoryUsedPercentage.{#SNMPINDEX}],5m)>{$MEMORY.UTIL.MAX}`|Average||

### LLD rule Network interfaces discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Network interfaces discovery|<p>Discovering interfaces from IF-MIB.</p>|SNMP agent|net.if.discovery|

### Item prototypes for Network interfaces discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Interface {#IFNAME}({#IFALIAS}): Operational status|<p>MIB: IF-MIB</p><p>The current operational state of the interface.</p><p>- The testing(3) state indicates that no operational packet scan be passed</p><p>- If ifAdminStatus is down(2) then ifOperStatus should be down(2)</p><p>- If ifAdminStatus is changed to up(1) then ifOperStatus should change to up(1) if the interface is ready to transmit and receive network traffic</p><p>- It should change todormant(5) if the interface is waiting for external actions (such as a serial line waiting for an incoming connection)</p><p>- It should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state</p><p>- It should remain in the notPresent(6) state if the interface has missing(typically, hardware) components.</p>|SNMP agent|net.if.status[ifOperStatus.{#SNMPINDEX}]|
|Interface {#IFNAME}({#IFALIAS}): Bits received|<p>MIB: IF-MIB</p><p>The total number of octets received on the interface, including framing characters. This object is a 64-bit version of ifInOctets. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.</p>|SNMP agent|net.if.in[ifHCInOctets.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li>Change per second</li><li><p>Custom multiplier: `8`</p></li></ul>|
|Interface {#IFNAME}({#IFALIAS}): Bits sent|<p>MIB: IF-MIB</p><p>The total number of octets transmitted out of the interface, including framing characters. This object is a 64-bit version of ifOutOctets.Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.</p>|SNMP agent|net.if.out[ifHCOutOctets.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li>Change per second</li><li><p>Custom multiplier: `8`</p></li></ul>|
|Interface {#IFNAME}({#IFALIAS}): Inbound packets with errors|<p>MIB: IF-MIB</p><p>For packet-oriented interfaces, the number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.  For character-oriented or fixed-length interfaces, the number of inbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.</p>|SNMP agent|net.if.in.errors[ifInErrors.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li>Change per second</li></ul>|
|Interface {#IFNAME}({#IFALIAS}): Outbound packets with errors|<p>MIB: IF-MIB</p><p>For packet-oriented interfaces, the number of outbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.  For character-oriented or fixed-length interfaces, the number of outbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.</p>|SNMP agent|net.if.out.errors[ifOutErrors.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li>Change per second</li></ul>|
|Interface {#IFNAME}({#IFALIAS}): Outbound packets discarded|<p>MIB: IF-MIB</p><p>The number of outbound packets which were chosen to be discarded</p><p>even though no errors had been detected to prevent their being deliverable to a higher-layer protocol.</p><p>One possible reason for discarding such a packet could be to free up buffer space.</p><p>Discontinuities in the value of this counter can occur at re-initialization of the management system,</p><p>and at other times as indicated by the value of ifCounterDiscontinuityTime.</p>|SNMP agent|net.if.out.discards[ifOutDiscards.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li>Change per second</li></ul>|
|Interface {#IFNAME}({#IFALIAS}): Inbound packets discarded|<p>MIB: IF-MIB</p><p>The number of inbound packets which were chosen to be discarded</p><p>even though no errors had been detected to prevent their being deliverable to a higher-layer protocol.</p><p>One possible reason for discarding such a packet could be to free up buffer space.</p><p>Discontinuities in the value of this counter can occur at re-initialization of the management system,</p><p>and at other times as indicated by the value of ifCounterDiscontinuityTime.</p>|SNMP agent|net.if.in.discards[ifInDiscards.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li>Change per second</li></ul>|
|Interface {#IFNAME}({#IFALIAS}): Interface type|<p>MIB: IF-MIB</p><p>The type of interface.</p><p>Additional values for ifType are assigned by the Internet Assigned Numbers Authority (IANA),</p><p>through updating the syntax of the IANAifType textual convention.</p>|SNMP agent|net.if.type[ifType.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `1d`</p></li></ul>|
|Interface {#IFNAME}({#IFALIAS}): Speed|<p>MIB: IF-MIB</p><p>An estimate of the interface's current bandwidth in units of 1,000,000 bits per second. If this object reports a value of `n' then the speed of the interface is somewhere in the range of `n-500,000' to`n+499,999'.  For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth. For a sub-layer which has no concept of bandwidth, this object should be zero.</p>|SNMP agent|net.if.speed[ifHighSpeed.{#SNMPINDEX}]<p>**Preprocessing**</p><ul><li><p>Custom multiplier: `1000000`</p></li><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|

### Trigger prototypes for Network interfaces discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: Interface {#IFNAME}({#IFALIAS}): Link down|<p>This trigger expression works as follows:<br>1. It can be triggered if the operations status is down.<br>2. `{$IFCONTROL:"{#IFNAME}"}=1` - a user can redefine the context macro to "0", marking this interface as not important. No new trigger will be fired if this interface is down.<br>3. `{TEMPLATE_NAME:METRIC.diff()}=1` - the trigger fires only if the operational status was up to (1) sometime before (so, does not fire for "eternal off" interfaces.)<br><br>WARNING: if closed manually - it will not fire again on the next poll, because of .diff.</p>|`{$IFCONTROL:"{#IFNAME}"}=1 and last(/Arista by SNMP/net.if.status[ifOperStatus.{#SNMPINDEX}])=2 and (last(/Arista by SNMP/net.if.status[ifOperStatus.{#SNMPINDEX}],#1)<>last(/Arista by SNMP/net.if.status[ifOperStatus.{#SNMPINDEX}],#2))`|Average|**Manual close**: Yes|
|Arista: Interface {#IFNAME}({#IFALIAS}): High bandwidth usage|<p>The utilization of the network interface is close to its estimated maximum bandwidth.</p>|`(avg(/Arista by SNMP/net.if.in[ifHCInOctets.{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/Arista by SNMP/net.if.speed[ifHighSpeed.{#SNMPINDEX}]) or avg(/Arista by SNMP/net.if.out[ifHCOutOctets.{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/Arista by SNMP/net.if.speed[ifHighSpeed.{#SNMPINDEX}])) and last(/Arista by SNMP/net.if.speed[ifHighSpeed.{#SNMPINDEX}])>0`|Warning|**Manual close**: Yes<br>**Depends on**:<br><ul><li>Arista: Interface {#IFNAME}({#IFALIAS}): Link down</li></ul>|
|Arista: Interface {#IFNAME}({#IFALIAS}): High error rate|<p>It recovers when it is below 80% of the `{$IF.ERRORS.WARN:"{#IFNAME}"}` threshold.</p>|`min(/Arista by SNMP/net.if.in.errors[ifInErrors.{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"} or min(/Arista by SNMP/net.if.out.errors[ifOutErrors.{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}`|Warning|**Manual close**: Yes<br>**Depends on**:<br><ul><li>Arista: Interface {#IFNAME}({#IFALIAS}): Link down</li></ul>|
|Arista: Interface {#IFNAME}({#IFALIAS}): Ethernet has changed to lower speed than it was before|<p>This Ethernet connection has transitioned down from its known maximum speed. This might be a sign of autonegotiation issues. Acknowledge to close the problem manually.</p>|`change(/Arista by SNMP/net.if.speed[ifHighSpeed.{#SNMPINDEX}])<0 and last(/Arista by SNMP/net.if.speed[ifHighSpeed.{#SNMPINDEX}])>0 and ( last(/Arista by SNMP/net.if.type[ifType.{#SNMPINDEX}])=6 or last(/Arista by SNMP/net.if.type[ifType.{#SNMPINDEX}])=7 or last(/Arista by SNMP/net.if.type[ifType.{#SNMPINDEX}])=11 or last(/Arista by SNMP/net.if.type[ifType.{#SNMPINDEX}])=62 or last(/Arista by SNMP/net.if.type[ifType.{#SNMPINDEX}])=69 or last(/Arista by SNMP/net.if.type[ifType.{#SNMPINDEX}])=117 ) and (last(/Arista by SNMP/net.if.status[ifOperStatus.{#SNMPINDEX}])<>2)`|Info|**Manual close**: Yes<br>**Depends on**:<br><ul><li>Arista: Interface {#IFNAME}({#IFALIAS}): Link down</li></ul>|

### LLD rule EtherLike-MIB Discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|EtherLike-MIB Discovery|<p>Discovering interfaces from IF-MIB and EtherLike-MIB. Interfaces with up(1) Operational Status are discovered.</p>|SNMP agent|net.if.duplex.discovery<p>**Preprocessing**</p><ul><li><p>JavaScript: `The text is too long. Please see the template.`</p></li></ul>|

### Item prototypes for EtherLike-MIB Discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Interface {#IFNAME}({#IFALIAS}): Duplex status|<p>MIB: EtherLike-MIB</p><p>The current mode of operation of the MAC</p><p>entity.  'unknown' indicates that the current</p><p>duplex mode could not be determined.</p><p></p><p>Management control of the duplex mode is</p><p>accomplished through the MAU MIB.  When</p><p>an interface does not support autonegotiation,</p><p>or when autonegotiation is not enabled, the</p><p>duplex mode is controlled using</p><p>ifMauDefaultType.  When autonegotiation is</p><p>supported and enabled, duplex mode is controlled</p><p>using ifMauAutoNegAdvertisedBits.  In either</p><p>case, the currently operating duplex mode is</p><p>reflected both in this object and in ifMauType.</p><p></p><p>Note that this object provides redundant</p><p>information with ifMauType.  Normally, redundant</p><p>objects are discouraged.  However, in this</p><p>instance, it allows a management application to</p><p>determine the duplex status of an interface</p><p>without having to know every possible value of</p><p>ifMauType.  This was felt to be sufficiently</p><p>valuable to justify the redundancy.</p><p>Reference: [IEEE 802.3 Std.], 30.3.1.1.32,aDuplexStatus.</p>|SNMP agent|net.if.duplex[dot3StatsDuplexStatus.{#SNMPINDEX}]|

### Trigger prototypes for EtherLike-MIB Discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|Arista: Interface {#IFNAME}({#IFALIAS}): In half-duplex mode|<p>Please check autonegotiation settings and cabling.</p>|`last(/Arista by SNMP/net.if.duplex[dot3StatsDuplexStatus.{#SNMPINDEX}])=2`|Warning|**Manual close**: Yes|

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