Understanding Transparent Mode Conditions

A device operates in Layer 2 transparent mode when all physical interfaces on the device are configured as Layer 2 interfaces. A physical interface is a Layer 2 interface if its logical interface is configured with the bridge family.

There is no command to define or enable transparent mode on the device. The device operates in transparent mode when there are interfaces defined as Layer 2 interfaces. The device operates in route mode (the default mode) if there are no physical interfaces configured as Layer 2 interfaces.

Note: In this release, the SRX Series device can operate at either route mode or transparent mode, but not both modes at the same time. Changing the mode requires a reboot of the device.

You can configure the fxp0 out-of-band management interface on the SRX Series device as a Layer 3 interface, even if Layer 2 interfaces are defined on the device. With the exception of the fxp0 interface, you must not define Layer 2 and Layer 3 interfaces on the device’s network ports.

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