Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?


Cloud-Ready LED Blink Patterns

If your switch can't connect to the cloud, LED blink patterns on the switch can help tell you why.

The following table tells what the different blinking CLD LED patterns mean and what you can do to address it. In addition to observing the physical switch, you can also assess the status from the Junos CLI by issuing the show chassis led command.

Note that for Virtual Chassis (VC) deployments managed from the Mist cloud, the CLD LED reflect the state of the primary, except when a software download is in progress (in which case all members of the VC will show OS upgrade blink pattern and color).​

Table 1: Cloud LED Blink Patterns

CLD LEDs                   

Blink Pattern               


solid green

The ZTP process is complete.

solid white

Connected to Mist cloud.

3 yellow

No IP Address. The DHCP server is not configured or could not be reached. Junos did not receive a DHCP lease or IP address.

4 yellow

No default gateway. Either the address was not received or it is not configured on the device,

5 yellow

The default gateway could not be reached. No ARP from the default gateway.

6 yellow

No DNS server(s) found in the static configuration, or in the DHCP lease.

7 yellow

No response from the DNS server. The switch received an IP address for the DNS server via DHCP, but it cannot not reach the Mist cloud.

9 yellow

The Mist agent cannot reach the Mist cloud.

1 yellow, pause, 2 yellow

Could not connect to the redirect server, most likely due to a firewall blocking TCP port 443, TCP port 2200. See also Ports to Open in Your Firewall.

1 yellow, pause, 4 yellow

Invalid configuration on the redirect server (PHC). This device received a 500 or 404 error from the redirect server at

1 yellow, pause, 5 yellow

Incorrect time on the switch. During ZTP, the phone home client (PHC) received a certificate with the wrong time. ZTP could not continue.

1 yellow,  pause, 6 yellow

Cloud unreachable. During ZTP, the PHC could not reach the cloud.