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Setting an Uplink Port as a Virtual Chassis Port on an EX4500 or EX4550 Switch (CLI Procedure)

You can set any optical port on an EX4500 switch as a Virtual Chassis port (VCP). Setting an optical port as a VCP is especially useful in cases in which you have to connect Virtual Chassis members together across a distance that is greater than the longest VCP cable can breach.

You can use the optical ports to connect EX4200 switches, EX4500 switches, and EX4550 switches together into a Virtual Chassis. All supported optical connections between EX4200, EX4500, and EX4550 switches can be configured as VCPs.


The Virtual Chassis module for EX4500 switches is a field-replacable unit (FRU) that is not shipped with all EX4500 switch models but can be purchased separately. See Virtual Chassis Module in EX4500 Switches and EX4500 Switch Models.


If you configure an uplink port as a VCP to create a redundant link with a dedicated VCP connection on EX4200, EX4500, or EX4550 switches, to avoid traffic looping within the Virtual Chassis, you must reboot the Virtual Chassis after configuring the port conversion and cabling the VCP link. See Troubleshooting an EX Series Virtual Chassis for more information.

  1. Set the 10-Gigabit Ethernet SFP+ port as a VCP interface:


    • pic-slot-number—The PIC slot number, which is 0 when specifying a native port, 1 when specifying a port on the uplink module in PIC slot number 1, and 2 when specifying a port on an uplink module in PIC slot number 2.

    • port-number—The port number on the switch or uplink module.

  2. Log onto the other EX4500 switch, and set the other end of the connection as a VCP interface: