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Virtual Chassis Technology in Virtual Chassis Fabric

VCF utilizes the software infrastructure of Juniper Network’s flagship Virtual Chassis technology.

VCF, for instance, is managed as a single device running Junos OS and is configured and monitored using many of the CLI commands that are used to monitor and maintain a Virtual Chassis.

As with a Virtual Chassis, VCF uses a virtual management Ethernet (VME) interface, an optional but highly recommended user-configured interface that allows you to access and manage the VCF from a single IP address. A VME interface is a logical interface representing all of the out-of-band management ports on the member devices and it can be accessed from any member switch in the VCF that has a cabled management port. Therefore, even in the event of a Routing Engine switchover, you can log into the Virtual Chassis using the VME interface credentials.

VCF—also like a Virtual Chassis—has an inband virtual backplane that is constructed over the VCPs to enable resilient connectivity between all member switches in the fabric.