Juniper EX4600

Interface Alarm Messages
Interface alarms are alarms that you congure to alert you when an interface is down.
To congure an interface link-down condion to trigger a red or yellow alarm, or to congure the link-
down condion to be ignored, use the alarm statement at the [edit chassis] hierarchy level. You can
specify the ethernet, fibre-channel, or management-ethernet interface type.
NOTE: Fibre Channel alarms are valid only on QFX3500 devices.
NOTE: When red alarms or major alarms are issued on QFX5100 or EX4600 switches, the alarm
LED glows amber instead of red.
By default, major alarms are congured for interface link-down condions on the control plane and
management network interfaces in a QFabric system. The link-down alarms indicate that connecvity to
the control plane network is down. You can congure these alarms to be ignored using the alarm
statement at the [edit chassis] hierarchy level.
NOTE: If you congure a yellow alarm on the QFX3008-I Interconnect device, it is handled as a
red alarm.
Creang an Emergency Boot Device
Before you begin, you need to download the installaon media image for your device and Junos OS
release from hps://www.juniper.net/customers/support/ .
If Junos OS on the device is damaged in some way that prevents the soware from loading properly, you
can use an emergency boot device to reparon the primary disk and load a fresh installaon of Junos
OS. Use the following procedure to create an emergency boot device.
NOTE: In the following procedure, we assume that you are creang the emergency boot device
on a switch. You can create the emergency boot device on another Juniper Networks switch or
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