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zabbix/templates/net/generic_snmp
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README.md
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Network Generic Device by SNMP

Overview

Use this template if you can't find the template for specific vendor or device family.

Requirements

Zabbix version: 7.0 and higher.

Tested versions

This template has been tested on:

  • Generic SNMP devices

Configuration

Zabbix should be configured according to the instructions in the Templates out of the box section.

Setup

Refer to the vendor documentation.

Macros used

Name Description Default
{$SNMP.TIMEOUT} 5m
{$ICMP_LOSS_WARN} 20
{$ICMP_RESPONSE_TIME_WARN} 0.15
{$IFCONTROL} 1
{$IF.UTIL.MAX} 95
{$NET.IF.IFNAME.MATCHES} ^.*$
{$NET.IF.IFNAME.NOT_MATCHES}

Filter out loopbacks, nulls, docker veth links and docker0 bridge by default

 Macro too long. Please see the template.
{$NET.IF.IFOPERSTATUS.MATCHES} ^.*$
{$NET.IF.IFOPERSTATUS.NOT_MATCHES}

Ignore notPresent(6)

 ^6$
{$NET.IF.IFADMINSTATUS.MATCHES}

Ignore notPresent(6)

 ^.*
{$NET.IF.IFADMINSTATUS.NOT_MATCHES}

Ignore down(2) administrative status

 ^2$
{$NET.IF.IFDESCR.MATCHES} .*
{$NET.IF.IFDESCR.NOT_MATCHES} CHANGE_IF_NEEDED
{$NET.IF.IFTYPE.MATCHES} .*
{$NET.IF.IFTYPE.NOT_MATCHES} CHANGE_IF_NEEDED
{$IF.ERRORS.WARN} 2

Items

Name Description Type Key and additional info
Generic SNMP: Uptime (network)

MIB: SNMPv2-MIB

The time (in hundredths of a second) since the network management portion of the system was last re-initialized.

 SNMP agent system.net.uptime[sysUpTime.0]

Preprocessing

  • Custom multiplier: 0.01
Generic SNMP: Uptime (hardware)

MIB: HOST-RESOURCES-MIB

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.

 SNMP agent system.hw.uptime[hrSystemUptime.0]

Preprocessing

  • Check for not supported value

    ⛔️Custom on fail: Set value to: 0

  • Custom multiplier: 0.01
Generic SNMP: SNMP traps (fallback)

The item is used to collect all SNMP traps unmatched by other snmptrap items

 SNMP trap snmptrap.fallback
Generic SNMP: System location

MIB: SNMPv2-MIB

The physical location of this node (e.g., `telephone closet, 3rd floor'). If the location is unknown, the value is the zero-length string.

 SNMP agent system.location[sysLocation.0]

Preprocessing

  • Discard unchanged with heartbeat: 12h
Generic SNMP: System contact details

MIB: SNMPv2-MIB

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.

 SNMP agent system.contact[sysContact.0]

Preprocessing

  • Discard unchanged with heartbeat: 12h
Generic SNMP: System object ID

MIB: SNMPv2-MIB

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 determiningwhat kind of box' is being managed. For example, if vendorFlintstones, 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'.

 SNMP agent system.objectid[sysObjectID.0]

Preprocessing

  • Discard unchanged with heartbeat: 12h
Generic SNMP: System name

MIB: SNMPv2-MIB

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.

 SNMP agent system.name

Preprocessing

  • Discard unchanged with heartbeat: 12h
Generic SNMP: System description

MIB: SNMPv2-MIB

A textual description of the entity. This value should

include the full name and version identification of the system's hardware type, software operating-system, and

networking software.

 SNMP agent system.descr[sysDescr.0]

Preprocessing

  • Discard unchanged with heartbeat: 12h
Generic SNMP: SNMP agent availability

Availability of SNMP checks on the host. The value of this item corresponds to availability icons in the host list.

Possible value:

0 - not available

1 - available

2 - unknown

 Zabbix internal zabbix[host,snmp,available]
Generic SNMP: ICMP ping Simple check icmpping
Generic SNMP: ICMP loss Simple check icmppingloss
Generic SNMP: ICMP response time Simple check icmppingsec

Triggers

Name Description Expression Severity Dependencies and additional info
Generic SNMP: Host has been restarted

Uptime is less than 10 minutes.

 (last(/Network Generic Device by SNMP/system.hw.uptime[hrSystemUptime.0])>0 and last(/Network Generic Device by SNMP/system.hw.uptime[hrSystemUptime.0])<10m) or (last(/Network Generic Device by SNMP/system.hw.uptime[hrSystemUptime.0])=0 and last(/Network Generic Device by SNMP/system.net.uptime[sysUpTime.0])<10m) Warning Manual close: Yes
Depends on:
  • Generic SNMP: No SNMP data collection
Generic SNMP: System name has changed

The name of the system has changed. Acknowledge to close the problem manually.

 last(/Network Generic Device by SNMP/system.name,#1)<>last(/Network Generic Device by SNMP/system.name,#2) and length(last(/Network Generic Device by SNMP/system.name))>0 Info Manual close: Yes
Generic SNMP: No SNMP data collection

SNMP is not available for polling. Please check device connectivity and SNMP settings.

 max(/Network Generic Device by SNMP/zabbix[host,snmp,available],{$SNMP.TIMEOUT})=0 Warning Depends on:
  • Generic SNMP: Unavailable by ICMP ping
Generic SNMP: Unavailable by ICMP ping

Last three attempts returned timeout. Please check device connectivity.

 max(/Network Generic Device by SNMP/icmpping,#3)=0 High
Generic SNMP: High ICMP ping loss min(/Network Generic Device by SNMP/icmppingloss,5m)>{$ICMP_LOSS_WARN} and min(/Network Generic Device by SNMP/icmppingloss,5m)<100 Warning Depends on:
  • Generic SNMP: Unavailable by ICMP ping
Generic SNMP: High ICMP ping response time avg(/Network Generic Device by SNMP/icmppingsec,5m)>{$ICMP_RESPONSE_TIME_WARN} Warning Depends on:
  • Generic SNMP: High ICMP ping loss
  • Generic SNMP: Unavailable by ICMP ping

LLD rule Network interfaces discovery

Name Description Type Key and additional info
Network interfaces discovery

Discovering interfaces from IF-MIB.

 SNMP agent net.if.discovery

Item prototypes for Network interfaces discovery

Name Description Type Key and additional info
Interface {#IFDESCR}: Operational status

MIB: IF-MIB

The current operational state of the interface.

- The testing(3) state indicates that no operational packet scan be passed

- If ifAdminStatus is down(2) then ifOperStatus should be down(2)

- 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

- It should change todormant(5) if the interface is waiting for external actions (such as a serial line waiting for an incoming connection)

- 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

- It should remain in the notPresent(6) state if the interface has missing(typically, hardware) components.

 SNMP agent net.if.status[ifOperStatus.{#SNMPINDEX}]
Interface {#IFDESCR}: Bits received

MIB: IF-MIB

The total number of octets received on the interface,including framing characters. Discontinuities in the value of this counter can occur at re-initialization of the management system, and another times as indicated by the value of ifCounterDiscontinuityTime.

 SNMP agent net.if.in[ifInOctets.{#SNMPINDEX}]

Preprocessing

  • Change per second

  • Custom multiplier: 8
Interface {#IFDESCR}: Bits sent

MIB: IF-MIB

The total number of octets transmitted out of the interface, including framing characters. 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.

 SNMP agent net.if.out[ifOutOctets.{#SNMPINDEX}]

Preprocessing

  • Change per second

  • Custom multiplier: 8
Interface {#IFDESCR}: Inbound packets with errors

MIB: IF-MIB

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.

 SNMP agent net.if.in.errors[ifInErrors.{#SNMPINDEX}]

Preprocessing

  • Change per second
Interface {#IFDESCR}: Outbound packets with errors

MIB: IF-MIB

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.

 SNMP agent net.if.out.errors[ifOutErrors.{#SNMPINDEX}]

Preprocessing

  • Change per second
Interface {#IFDESCR}: Outbound packets discarded

MIB: IF-MIB

The number of outbound packets which were chosen to be discarded

even though no errors had been detected to prevent their being deliverable to a higher-layer protocol.

One possible reason for discarding such a packet could be to free up buffer space.

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.

 SNMP agent net.if.out.discards[ifOutDiscards.{#SNMPINDEX}]

Preprocessing

  • Change per second
Interface {#IFDESCR}: Inbound packets discarded

MIB: IF-MIB

The number of inbound packets which were chosen to be discarded

even though no errors had been detected to prevent their being deliverable to a higher-layer protocol.

One possible reason for discarding such a packet could be to free up buffer space.

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.

 SNMP agent net.if.in.discards[ifInDiscards.{#SNMPINDEX}]

Preprocessing

  • Change per second
Interface {#IFDESCR}: Interface type

MIB: IF-MIB

The type of interface.

Additional values for ifType are assigned by the Internet Assigned Numbers Authority (IANA),

through updating the syntax of the IANAifType textual convention.

 SNMP agent net.if.type[ifType.{#SNMPINDEX}]

Preprocessing

  • Discard unchanged with heartbeat: 1d
Interface {#IFDESCR}: Speed

MIB: IF-MIB

An estimate of the interface's current bandwidth in bits per second.

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.

If the bandwidth of the interface is greater than the maximum value reportable by this object then

this object should report its maximum value (4,294,967,295) and ifHighSpeed must be used to report the interface's speed.

For a sub-layer which has no concept of bandwidth, this object should be zero.

 SNMP agent net.if.speed[ifSpeed.{#SNMPINDEX}]

Trigger prototypes for Network interfaces discovery

Name Description Expression Severity Dependencies and additional info
Interface {#IFDESCR}: Link down

This trigger expression works as follows:
1. It can be triggered if the operations status is down.
2. {$IFCONTROL:"{#IFNAME}"}=1 - a user can redefine context macro to value - 0. That marks this interface as not important. No new trigger will be fired if this interface is down.
3. {TEMPLATE_NAME:METRIC.diff()}=1 - the trigger fires only if the operational status was up to (1) sometime before (so, do not fire for the 'eternal off' interfaces.)

WARNING: if closed manually - it will not fire again on the next poll, because of .diff.

 {$IFCONTROL:"{#IFNAME}"}=1 and last(/Network Generic Device by SNMP/net.if.status[ifOperStatus.{#SNMPINDEX}])=2 and (last(/Network Generic Device by SNMP/net.if.status[ifOperStatus.{#SNMPINDEX}],#1)<>last(/Network Generic Device by SNMP/net.if.status[ifOperStatus.{#SNMPINDEX}],#2)) Average Manual close: Yes
Interface {#IFDESCR}: High bandwidth usage

The utilization of the network interface is close to its estimated maximum bandwidth.

 (avg(/Network Generic Device by SNMP/net.if.in[ifInOctets.{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/Network Generic Device by SNMP/net.if.speed[ifSpeed.{#SNMPINDEX}]) or avg(/Network Generic Device by SNMP/net.if.out[ifOutOctets.{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/Network Generic Device by SNMP/net.if.speed[ifSpeed.{#SNMPINDEX}])) and last(/Network Generic Device by SNMP/net.if.speed[ifSpeed.{#SNMPINDEX}])>0 Warning Manual close: Yes
Depends on:
  • Interface {#IFDESCR}: Link down
Interface {#IFDESCR}: High error rate

It recovers when it is below 80% of the {$IF.ERRORS.WARN:"{#IFNAME}"} threshold.

 min(/Network Generic Device by SNMP/net.if.in.errors[ifInErrors.{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"} or min(/Network Generic Device by SNMP/net.if.out.errors[ifOutErrors.{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"} Warning Manual close: Yes
Depends on:
  • Interface {#IFDESCR}: Link down
Interface {#IFDESCR}: Ethernet has changed to lower speed than it was before

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.

 change(/Network Generic Device by SNMP/net.if.speed[ifSpeed.{#SNMPINDEX}])<0 and last(/Network Generic Device by SNMP/net.if.speed[ifSpeed.{#SNMPINDEX}])>0 and ( last(/Network Generic Device by SNMP/net.if.type[ifType.{#SNMPINDEX}])=6 or last(/Network Generic Device by SNMP/net.if.type[ifType.{#SNMPINDEX}])=7 or last(/Network Generic Device by SNMP/net.if.type[ifType.{#SNMPINDEX}])=11 or last(/Network Generic Device by SNMP/net.if.type[ifType.{#SNMPINDEX}])=62 or last(/Network Generic Device by SNMP/net.if.type[ifType.{#SNMPINDEX}])=69 or last(/Network Generic Device by SNMP/net.if.type[ifType.{#SNMPINDEX}])=117 ) and (last(/Network Generic Device by SNMP/net.if.status[ifOperStatus.{#SNMPINDEX}])<>2) Info Manual close: Yes
Depends on:
  • Interface {#IFDESCR}: Link down

LLD rule EtherLike-MIB Discovery

Name Description Type Key and additional info
EtherLike-MIB Discovery

Discovering interfaces from IF-MIB and EtherLike-MIB. Interfaces with up(1) Operational Status are discovered.

 SNMP agent net.if.duplex.discovery

Preprocessing

  • JavaScript: The text is too long. Please see the template.

Item prototypes for EtherLike-MIB Discovery

Name Description Type Key and additional info
Interface {#IFNAME}({#IFALIAS}): Duplex status

MIB: EtherLike-MIB

The current mode of operation of the MAC

entity. 'unknown' indicates that the current

duplex mode could not be determined.

Management control of the duplex mode is

accomplished through the MAU MIB. When

an interface does not support autonegotiation,

or when autonegotiation is not enabled, the

duplex mode is controlled using

ifMauDefaultType. When autonegotiation is

supported and enabled, duplex mode is controlled

using ifMauAutoNegAdvertisedBits. In either

case, the currently operating duplex mode is

reflected both in this object and in ifMauType.

Note that this object provides redundant

information with ifMauType. Normally, redundant

objects are discouraged. However, in this

instance, it allows a management application to

determine the duplex status of an interface

without having to know every possible value of

ifMauType. This was felt to be sufficiently

valuable to justify the redundancy.

Reference: [IEEE 802.3 Std.], 30.3.1.1.32,aDuplexStatus.

 SNMP agent net.if.duplex[dot3StatsDuplexStatus.{#SNMPINDEX}]

Trigger prototypes for EtherLike-MIB Discovery

Name Description Expression Severity Dependencies and additional info
Interface {#IFNAME}({#IFALIAS}): In half-duplex mode

Please check autonegotiation settings and cabling

 last(/Network Generic Device by SNMP/net.if.duplex[dot3StatsDuplexStatus.{#SNMPINDEX}])=2 Warning Manual close: Yes

Feedback

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You can also provide feedback, discuss the template, or ask for help at ZABBIX forums