CHAPTER 25
Troubleshooting Switch Components
•
Troubleshooting Network Interfaces on EX4200 Switches on page 237
•
Troubleshooting Virtual Chassis Port Connectivity on an EX4200 Switch on page 238
•
Troubleshooting Power Supply Installation Alarms on EX4200 Switches on page 238
Troubleshooting Network Interfaces on EX4200 Switches
This topic provides troubleshooting information for specific problems related to interfaces
on EX4200 switches.
•
The interface on the port in which an SFP or SFP+ transceiver is installed is
down on page 237
The interface on the port in which an SFP or SFP+ transceiver is installed is down
Problem Description: The interface on the port in which an SFP or SFP+ transceiver is installed in
an uplink module installed in an EX4200 switch is down.
Symptoms: 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+ and SFP+ MACsec uplink modules operate in the 10-gigabit mode
and support only SFP+ transceivers. The operating mode for the module is incorrectly
set.
Solution Either SFP+ or SFP transceivers can be installed in the uplink modules. You must configure
the operating mode of the SFP+ or SFP+ MACsec 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+ or SFP+ MACSec Uplink Module (CLI Procedure).
Related
Documentation
Troubleshooting Virtual Chassis Port Connectivity on an EX4200 Switch on page 238•
• Monitoring Interface Status and Traffic
• Configuring Gigabit Ethernet Interfaces (CLI Procedure)
237Copyright © 2017, Juniper Networks, Inc.
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