Juniper EX4300 40G QSFP+ Ports Configuration (Non VC-Ports)

The 40G ports on EX4300 Switches are configured as VC-PORTs by default. First remove VC-PORT configurations.

> request virtual-chassis vc-port delete pic-slot 1 port 0
> request virtual-chassis vc-port delete pic-slot 1 port 1
> request virtual-chassis vc-port delete pic-slot 1 port 2
> request virtual-chassis vc-port delete pic-slot 1 port 3

Then you need to configure no-auto-negotiation for the ports to become active.

# set interfaces et-0/1/0 ether-options no-auto-negotiation
# set interfaces et-0/1/1 ether-options no-auto-negotiation
# set interfaces et-0/1/2 ether-options no-auto-negotiation
# set interfaces et-0/1/3 ether-options no-auto-negotiation