Juniper Networks EX3200, EX4200 manual Virtual Chassis port VCP connection does not work

Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches

The interface on the port in which an SFP or SFP+ transceiver is installed in an SFP+ uplink module is down

Problem The interface on the port in which an SFP or SFP+ transceiver is installed in an SFP+ uplink module installed in an EX3200 or EX4200 switch is down.

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 By default, the SFP+ uplink module operates in the 10-gigabit mode and supports only SFP+ transceivers. The operating mode for the module is incorrectly set.

Solution Either SFP+ or SFP transceivers can be installed in SFP+ uplink modules. You must configure the operating mode of the SFP+ uplink module to match the type of transceiver you want to use. For SFP+ transceivers, configure the 10-gigabit operating mode and for SFP transceivers, configure the 1-gigabit operating mode. See “Setting the Mode on an SFP+ Uplink Module (CLI Procedure)” on page 168.

Related Topics ■ Troubleshooting Uplink Module Installation or Replacement on EX3200 and EX4200 Switches on page 192

■Monitoring Interface Status and Traffic

■Configuring Gigabit Ethernet Interfaces (CLI Procedure)

■Configuring Gigabit Ethernet Interfaces (J-Web Procedure)

■Removing a Transceiver from an EX Series Switch on page 177

■Uplink Modules in EX3200 and EX4200 Switches on page 33

■EX Series Switches Interfaces Overview

Troubleshooting Uplink Module Installation or Replacement on EX3200 and EX4200 Switches

This topic provides troubleshooting information for specific problems related to uplink module ports on EX3200 and EX4200 switches.

1.Virtual Chassis port (VCP) connection does not work on page 192

2.One of the last four network ports on an EX3200 switch with an SFP or SFP+ uplink module installed is disabled on page 193

Virtual Chassis port (VCP) connection does not work

Problem The Virtual Chassis port (VCP) connection configured in an EX4200 switch does not work.

A port of the uplink module is set as a VCP.

192■ The interface on the port in which an SFP or SFP+ transceiver is installed in an SFP+ uplink module is down