Grafana dashboard: RARE/freeRouter - interfaces packets
Description: Display interface packet metrics

`scope:local` to freeRouter node

freeRouter Prometheus configuration: (copy & paste in freeRouter CLI)
* Create hardware and software sensor
```
sensor ifaces-hwp
path interfaces-hwp/interface/counter
prefix freertr-ifaces
key name interfaces-hwp/interface
command sho inter hwsumm
prepend iface_hw_byte_
name 0 ifc=
replace \. _
column 1 name st
column 1 replace admin -1
column 1 replace down 0
column 1 replace up 1
column 2 name tx
column 3 name rx
column 4 name dr
.
exit

sensor ifaces-swp
path interfaces-swp/interface/counter
prefix freertr-ifaces
key name interfaces-swp/interface
command sho inter swsumm
prepend iface_sw_byte_
name 0 ifc=
replace \. _
column 1 name st
column 1 replace admin -1
column 1 replace down 0
column 1 replace up 1
column 2 name tx
column 3 name rx
column 4 name dr
.
exit
```
* freeRtr server Prometheus agent configuration

```
server prometheus pr
 sensor ifaces-hwp
 sensor ifaces-swp
 vrf <PROMETHEUS_VRF>
 exit
```
* Prometheus server configuration (sample config with 2 nodes)
```
global:
  scrape_interval: 15s
  scrape_timeout: 10s
  evaluation_interval: 30s
alerting:
  alertmanagers:
  - static_configs:
    - targets: []
    scheme: http
    timeout: 10s
scrape_configs:
- job_name: router
  scrape_interval: 15s
  scrape_timeout: 10s
  metrics_path: /metrics
  scheme: http
  static_configs:
  - targets:
    - <prometheus_agent_ip_1>:9001
    labels:
      node_name: <prometheus_agent_1_node_name>
  - targets:
    - <prometheus_agent_ip_2>:9001
    labels:
      node_name: <prometheus_agent_2_node_name>
```




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      "name": "DS_PROMETHEUS",
      "label": "Prometheus",
      "description": "",
      "type": "datasource",
      "pluginId": "prometheus",
      "pluginName": "Prometheus"
    }
  ],
  "__requires": [
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    },
    {
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      "id": "prometheus",
      "name": "Prometheus",
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    }
  ],
  "annotations": {
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        "builtIn": 1,
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        "enable": true,
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        "iconColor": "rgba(0, 211, 255, 1)",
        "limit": 100,
        "name": "Annotations & Alerts",
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        "type": "dashboard"
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  },
  "description": "Display interface packet metrics",
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  "links": [],
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      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_PROMETHEUS}",
      "fieldConfig": {
        "defaults": {
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          "links": [],
          "unit": "pps"
        },
        "overrides": []
      },
      "fill": 1,
      "fillGradient": 7,
      "gridPos": {
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      "spaceLength": 10,
      "stack": false,
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      "targets": [
        {
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          "interval": "",
          "legendFormat": "tx",
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        },
        {
          "expr": "rate(iface_${cntr_type}_pack_rx{ifc=\"$node_name_iface\",node_name=\"$node_name\"}[1m])",
          "interval": "",
          "legendFormat": "rx",
          "refId": "B"
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      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "${cntr_type}:${node_name_iface}",
      "tooltip": {
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      "type": "graph",
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          "show": true
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      "yaxis": {
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        "alignLevel": null
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  ],
  "refresh": "5s",
  "schemaVersion": 26,
  "style": "dark",
  "tags": [
    "[scope:local]"
  ],
  "templating": {
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        "current": {},
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        "definition": "label_values({__name__=~\"^iface_.*\"},node_name)",
        "hide": 0,
        "includeAll": false,
        "label": "node name",
        "multi": false,
        "name": "node_name",
        "options": [],
        "query": "label_values({__name__=~\"^iface_.*\"},node_name)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
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        "tags": [],
        "tagsQuery": "",
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        "includeAll": true,
        "label": "interface",
        "multi": true,
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        "hide": 0,
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        "label": "counter type",
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        "name": "cntr_type",
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            "selected": false,
            "text": "hw",
            "value": "hw"
          },
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        ],
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        "allValue": null,
        "current": {
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          "text": "tx",
          "value": "tx"
        },
        "hide": 2,
        "includeAll": false,
        "label": "Traffic direction",
        "multi": false,
        "name": "dir",
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            "text": "tx",
            "value": "tx"
          },
          {
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            "value": "rx"
          }
        ],
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        "queryValue": "",
        "skipUrlSync": false,
        "type": "custom"
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  "timezone": "",
  "title": "RARE/freeRouter - interfaces packets",
  "uid": "sqqgkzcee",
  "version": 13
}