Dashboard status light not working across subnets/zones

[tvwerkhoven]

Operating environment/Installation (Hass.io/Docker/pip/etc.): Home-built

ESP (ESP32/ESP8266, Board/Sonoff): ESP8266, Wemos D1 mini pro v2.0.0

Affected component: esphome dashboard status light/board ping

Description of problem: The status light on the esphome dashboard does not appear to work for boards on a different subnet/zones.

I have two network zones:

1. Default: 172.16.0.0/24, access to everything
2. IoT: 172.16.1.0/24, access to LAN only, where I run my IoT devices.

Everything else works:

1. I can ping the board across zones
2. I can reach the esphome webserver across zones
3. I can push OTA updates across zones
4. I can see the status of esphome.io boards on the same zone (either default or IoT)

the only thing not working is the status light across zones.

Problem-relevant YAML-configuration entries: not sure this is relevant, see below

esphome:
  name: esp_bedroom
  platform: ESP8266
  board: d1_mini_pro

wifi:
  ssid: "SSID-IoT"
  password: "passwd"
  fast_connect: True # Required to connect to hidden SSIDs
  domain: ".lan"

# Enable logging - set to different hardware
# https://quinled.info/2019/05/19/quinled-dig-uno-esphome-home-assistant-sample-configuration/
logger:
  hardware_uart: uart1

web_server:
  port: 80

ota:

i2c:
  sda: 4
  scl: 5
  scan: True

uart:
  rx_pin: GPIO3
  tx_pin: GPIO1
  baud_rate: 9600

# Example configuration entry
sensor:
  - platform: bme280
    temperature:
      name: "BME280 Temperature"
      oversampling: 16x
      id: bme_280_temp
    pressure:
      name: "BME280 Pressure"
      id: bme_280_press
    humidity:
      name: "BME280 Humidity"
      id: bme_280_rh
    address: 0x76
    update_interval: 60s

Logs (if applicable): N/A

PASTE DEBUG LOG HERE

Additional information and things you've tried:

In the Safari Developer Tools I can see a fetch for ping being sent out every second, so some mechanism is working.

[carlosmgr]

My nodes and my dashboard are on 2 diferent vlans and they are working fine, that is a problem on your rules.

[brandond]

See status_use_ping option in docs. I believe it's covered in the hassio add-on documentation, if you need to set it when running the dashboard from shell you'll have to set an environment variable I believe.

[carlosmgr]

I see this question here from time to time, so lets help someone.

ESPhome uses mDNS witch is a multicast protocol, multicast does not cross vlans.

You have 4 options:

• Use a Firewall/Router that permits mDNS to cross vlans
• Use Avahi reflector on a RPI connected to all vlans
• On hass.io add the "status_use_ping=true"
• On esphome docker dashboard use the env "ESPHOME_DASHBOARD_USE_PING=true"

[brandond]

@carlosmgr that's a great writeup. Would you mind putting in a PR for the docs?

[tvwerkhoven]

@carlosmgr Thanks! Solution 4 worked for me.