Juniper Networks EX4200 - Manual (Page 219)

Cause The uplink module installed in the switch was replaced.
Solution Set a port in the uplink module as a VCP. See Setting an Uplink Module Port as a
Virtual Chassis Port (CLI Procedure).
One of the last four network ports on an EX3200 switch with an SFP or SFP+ uplink module
installed is disabled
Problem One of the last four built-in ports ( ge-0/0/20 through ge-0/0/23 on 24-port models
or ge-0/0/44 through ge-0/0/47 on 48-port models) of an EX3200 switch with an
SFP or SFP+ uplink module installed in it is disabled.
When you check the status with the CLI command show interfaces ge- or with the
J-Web user interface, the disabled port is not listed.
Cause The last four built-in ports use the same ASIC as the SFP uplink module. Therefore,
if you install a transceiver in an SFP or SFP+ uplink module installed in an EX3200
switch, a corresponding base port from the last four built-in ports is disabled.
Solution If you need to use the disabled built-in port, you must remove the transceiver from
the SFP or SFP+ uplink module. Alternatively, you can install an XFP uplink module
instead of an SFP or SFP+ uplink module. There is no conflict between the built-in
network ports and the ports on the XFP uplink modules.
Related Topics ■ Monitoring Interface Status and Traffic
■ Configuring Gigabit Ethernet Interfaces (CLI Procedure)
■ Configuring Gigabit Ethernet Interfaces (J-Web Procedure)
■ Installing an Uplink Module in an EX3200 or EX4200 Switch on page 133
■ Removing a Transceiver from an EX Series Switch on page 177
■ Uplink Modules in EX3200 and EX4200 Switches on page 33
■ Understanding Virtual Chassis Hardware Configuration on an EX4200 Switch on
page 101
One of the last four network ports on an EX3200 switch with an SFP or SFP+ uplink module installed is disabled ■ 193
Chapter 15: Troubleshooting Switch Components