Troubleshooting Uplink Module Installation or Replacement on EX3200 Switches

This topic provides troubleshooting information for specific problems related to uplink module ports on EX3200 switches.

1. One of the last four network ports on an EX3200 switch with an SFP or SFP+ uplink module installed is disabled
2. A port on an SFP uplink module installed in an EX3200 switch is disabled

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.

A port on an SFP uplink module installed in an EX3200 switch is disabled

Problem

One of the ports (ge-0/1/0 through ge-0/1/3) of an SFP uplink module installed in an EX3200 switch is disabled.

When you check the status with the show interface commands or with the J-Web user interface, the disabled port is not listed.

Cause

If you replace a transceiver multiple times in quick succession in a port in an SFP uplink module installed in an EX3200 switch, it might cause an eeprom read problem. The switch might not create an interface for that port and that port might be disabled.

Solution

To enable the disabled uplink module port, remove the transceiver from that port and install it after 10 seconds.