librenms/doc/API/ARP.md
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source: API/ARP.md
path: blob/master/doc/
### `list_arp`
Retrieve a specific ARP entry or all ARP entries for a device
Route: `/api/v0/resources/ip/arp/:query`
Query can be:
- An IP address
- A MAC address
- A CIDR network (192.168.1.0/24)
- `all` and set ?device=_hostname_ (or device id)
Input:
- device if you specify all for the query then you need to populate this
with the hostname or id of the device.
Example:
```curl
curl -H 'X-Auth-Token: YOURAPITOKENHERE' https://librenms.org/api/v0/resources/ip/arp/1.1.1.1
curl -H 'X-Auth-Token: YOURAPITOKENHERE' https://librenms.org/api/v0/resources/ip/arp/192.168.1.0/24
curl -H 'X-Auth-Token: YOURAPITOKENHERE' https://librenms.org/api/v0/resources/ip/arp/all?device=localhost
```
Output:
```json
{
"status": "ok",
"message": "",
"count": 1,
"arp": [
{
"port_id": "229",
"mac_address": "da160e5c2002",
"ipv4_address": "1.1.1.1",
"context_name": ""
}
]
}
```