Arista extension
- Latest Dynatrace
- Extension
- Published Aug 10, 2026
Monitor your Arista devices using SNMP to track interface health, bandwidth, and CPU/memory usage to detect performance issues and resource exhaustion.
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Overview
The Arista extension uses SNMP to gather performance and health metrics from your Arista devices every minute. This data is integrated into 
Infrastructure & Operations to offer Network and Ops Administrators visibility into device health and performance.
Use cases
- Identify problematic interfaces that drop or corrupt packets.
- Pinpoint hardware faults, misconfigurations, or congestion issues affecting performance or reliability down to the TCP/UDP level.
- Track real-time and historical bandwidth usage to analyze traffic patterns.
- Monitor CPU and memory consumption on Arista devices to detect memory leaks or resource exhaustion.
Compatibility information
- SNMP v2c or SNMP v3
- Dynatrace version 1.341+
- ActiveGate version 1.333+
Activation and setup
Activate the extension in your environment web UI using Dynatrace Hub. Provide the necessary device configuration, and Dynatrace automatically deploys the extension and begins monitoring.
Read more in our SNMP extension documentation.
Details
The extension package contains:
- SNMP data source configuration for metric ingestion
- Topology definitions for Arista devices
- Dashboards offering monitoring overviews
- Infrastructure & Operations entries for each created entity
The extension builds on the SNMP data source that is part of Dynatrace's Extensions 2.0 framework.
Licensing and costs
There is no charge to use the extension. You are only charged for the data that the extension ingests.
The Arista extension ingests custom metrics, which consume Davis Data Units (DDUs) (Dynatrace classic license) or Metrics powered by Grail (DPS), according to your license model.
Calculations are based on the assumption that you monitor only recommended metrics for every feature set every minute. Metric data points per minute per device:
8.2 + (9 * n_interfaces)
Dynatrace Platform Subscription
In the Dynatrace Platform Subscription, metric ingestion consumes Metrics powered by Grail according to the number of ingested metric data points.
To calculate the approximate yearly consumption, apply the following calculation: <metric data points per minute> * 60 minutes * 24 hours * 365 days.
Dynatrace classic license
In the classic licensing model, metric ingestion consumes Davis Data Units (DDUs) at the rate of .001 DDUs per metric data point. Multiply the above formula for annual data points by .001 to estimate annual DDU usage.
The DDU cost above does not include any possible log events or custom events that are triggered by the extension. For more information, see DDU events.
Feature sets
When activating your extension using a monitoring configuration, you can limit monitoring to one of the feature sets. To work properly, the extension has to collect at least one metric after the activation.
In highly segmented networks, feature sets can reflect the segments of your environment. Then, when you create a monitoring configuration, you can select a feature set and a corresponding ActiveGate group that can connect to this particular segment.
All metrics that aren't categorized into any feature set are considered to be the default and are always reported.
A metric inherits the feature set of a subgroup, which in turn inherits the feature set of a group. Also, the feature set defined on the metric level overrides the feature set defined on the subgroup level, which in turn overrides the feature set defined on the group level.
Advanced interfaces
| Metric name | Metric key | Description |
|---|---|---|
| Multicast packets in | com.dynatrace.extension.network_device.if.in.multicast_pkts.count | The number of multicast packets, inbound to the network interface. |
| Multicast packets out | com.dynatrace.extension.network_device.if.out.multicast_pkts.count | The number of multicast packets, outbound from the network interface. |
| Broadcast packets in | com.dynatrace.extension.network_device.if.in.broadcast_pkts.count | The number of broadcast packets, inbound to the network interface. |
| Broadcast packets out | com.dynatrace.extension.network_device.if.out.broadcast_pkts.count | The number of broadcast packets, outbound from the network interface. |
| Unicast packets in | com.dynatrace.extension.network_device.if.in.ucast_pkts.count | The number of unicast packets, inbound to the network interface. |
| Unicast packets out | com.dynatrace.extension.network_device.if.out.ucast_pkts.count | The number of unicast packets, outbound from the network interface. |
default
| Metric name | Metric key | Description |
|---|---|---|
| Uptime | com.dynatrace.extension.network_device.sysuptime | The time, in system ticks (1/100 second), since the last system reboot. |
| CPU usage | com.dynatrace.extension.network_device.cpu_usage | The system's CPU usage expressed as a percentage |
| Used memory | com.dynatrace.extension.network_device.memory_used | The amount of memory, in kilobytes, used by the device |
| Total memory | com.dynatrace.extension.network_device.memory_total | The total (used and free) amount of memory, in kilobytes, available on the device |
| Interface status | com.dynatrace.extension.network_device.if.status | A state metric representing a network interface, whose value is always 1 and its dimensions indicate its state details. |
BGP
| Metric name | Metric key | Description |
|---|---|---|
| BGP Peer Connection State | com.dynatrace.extension.network_device.bgp4.state | The current state of the BGP peer connection. Possible values are idle(1), connect(2), active(3), opensent(4), openconfirm(5), established(6). |
| BGP Peer Admin Status | com.dynatrace.extension.network_device.bgp4.admin.status | The desired state of the BGP connection for this peer. Possible values are stop(1), start(2). |
| BGP Peer Established Time | com.dynatrace.extension.network_device.bgp4.established_time | The time in seconds this peer has been in the established state or how long since this peer was last in the established state. |
SNMP
| Metric name | Metric key | Description |
|---|---|---|
| SNMP Messages delivered | com.dynatrace.extension.network_device.snmp.in.pkts.count | Total number of messages delivered to the SNMP entity from the transport service |
| SNMP Messages passed | com.dynatrace.extension.network_device.snmp.out.pkts.count | Total number of messages passed from the SNMP entity to the transport service |
| Silently dropped SNMP PDUs | com.dynatrace.extension.network_device.snmp.silent_drops.count | Number of silently dropped SNMP PDUs due to the large reply size |
| Proxy dropped SNMP PDUs | com.dynatrace.extension.network_device.snmp.proxy_drops.count | Number of silently dropped SNMP PDUs due to the other than a time-out |
| Unsupported SNMP version messages | com.dynatrace.extension.network_device.snmp.in.bad_versions.count | Total number of messages delivered with an unsupported SNMP version |
| Messages with bad SNMP community names | com.dynatrace.extension.network_device.snmp.in.bad_community_names.count | Number of messages with an unknown SNMP community name |
| Messages not allowed for SNMP community names | com.dynatrace.extension.network_device.snmp.in.bad_community_uses.count | Number of messages not allowed for the used SNMP community name |
| 'noSuchName' SNMP errors | com.dynatrace.extension.network_device.snmp.in.no_such_names.count | Number of delivered SNMP PDUs with 'noSuchName' error |
| 'badValue' SNMP errors | com.dynatrace.extension.network_device.snmp.in.bad_values.count | Number of delivered SNMP PDUs with 'badValue' error |
| SNMP Traps processed | com.dynatrace.extension.network_device.snmp.in.traps.count | Total number of SNMP Trap PDUs accepted and processed |
| SNMP Traps generated | com.dynatrace.extension.network_device.snmp.out.traps.count | Total number of SNMP Trap PDUs generated |
LLDP
| Metric name | Metric key | Description |
|---|---|---|
| LLDP Neighbor Information | com.dynatrace.extension.network_device.lldp.info | Conveys information about the existing LLDP neighbor connections. |
Interfaces
| Metric name | Metric key | Description |
|---|---|---|
| Traffic in | com.dynatrace.extension.network_device.if.bytes_in.count | The volume of traffic, in bytes, inboud to the network interface. |
| Traffic out | com.dynatrace.extension.network_device.if.bytes_out.count | The volume of traffic, in bytes, outbound from the network interface. |
| Errors in | com.dynatrace.extension.network_device.if.in.errors.count | The number of errors, inboud to the network interface. |
| Discards in | com.dynatrace.extension.network_device.if.in.discards.count | The number of discarded packets, inbound to the network interface. |
| Errors out | com.dynatrace.extension.network_device.if.out.errors.count | The number of errors, outbound from the network interface. |
| Discards out | com.dynatrace.extension.network_device.if.out.discards.count | The number of discarded packets, outbound from the network interface. |
| Interface speed | com.dynatrace.extension.network_device.if.speed | The configured speed of the network interface in megabits per second. |
| Last change | com.dynatrace.extension.network_device.if.lastchange | The value of sysUpTime at the time the interface entered its current operational state. |
TCP and UDP
| Metric name | Metric key | Description |
|---|---|---|
| TCP active opens | com.dynatrace.extension.network_device.tcp.activeopens.count | Number of transitions of TCP connections from CLOSED to SYN-SENT |
| TCP passive opens | com.dynatrace.extension.network_device.tcp.passiveopens.count | Number of transitions of TCP connections from CLOSED to SYN-RCVD |
| TCP failed attempts | com.dynatrace.extension.network_device.tcp.attemptfails.count | Number of transitions of TCP connections from SYN-SENT/SYN-RCVD to CLOSED and from SYN-RCVD to LISTEN |
| TCP resets | com.dynatrace.extension.network_device.tcp.estab.resets.count | Number of transitions of TCP connections from ESTABLISHED/CLOSE-WAIT to CLOSED |
| TCP connections | com.dynatrace.extension.network_device.tcp.curr.estab | Number of TCP connections in the ESTABLISHED/CLOSE-WAIT state |
| TCP segments retransmitted | com.dynatrace.extension.network_device.tcp.retrans.segs.count | Total number of segments retransmitted |
| TCP segment errors | com.dynatrace.extension.network_device.tcp.in.errors.count | Total number of segments received in error |
| TCP segment resets | com.dynatrace.extension.network_device.tcp.out.rsts.count | Number of TCP segments sent containing the RST flag |
| UDP datagrams received without port | com.dynatrace.extension.network_device.udp.noports.count | Number of received UDP datagrams (no application at the destination port) |
| UDP datagram errors | com.dynatrace.extension.network_device.udp.in.errors.count | Number of received and not delivered UDP datagrams (other than no application at the destination port) |
