This topic provides a general guide to troubleshooting some typical problems you may encounter on your QFX Series or OCX Series product.
Table 1 provides a list of problem categories, summary of the symptom or problem, and recommended actions with links to the troubleshooting documentation.
Table 1: Troubleshooting on the QFX Series
Symptom or Problem
Switch hardware components
LCD panel shows a chassis alarm count.
Fan tray LED is blinking amber.
Chassis status LED for the power is blinking amber.
Chassis status LED for the fan (on the management board) is blinking amber.
Replace the management board as soon as possible. See Chassis Status LEDs on a QFX3500 Device.
Cannot configure a port as a Gigabit Ethernet port.
Check whether the port is a valid Gigabit Ethernet port (6 through 41).
Cannot configure a port as a Fibre Channel port.
Check whether the port is a valid Fibre Channel port (0 through 5 and 42 through 47).
Cannot configure a port as a 10-Gigabit Ethernet port.
If the port is not a 40-Gbps QSFP+ interface, check whether the port is in the range of 0 through 5 or 42 through 47. If one of the ports in that block (0 through 5 or 42 through 47) is configured as a Fibre Channel port, then all ports in that block must also be configured as Fibre Channel ports.
If the port is a 40-Gbps QSFP+ interface. make sure the configuration does not exceed the interface limit. Each 40-Gbps QSFP+ interface can be split into four 10-Gigabit Ethernet interfaces, but because port 0 is reserved, so you can only configure an additional fifteen 10-Gigabit Ethernet interfaces.
Cannot configure a 40-Gbps QSFP+ interface.
The 40-Gbps QSFP+ interfaces can only be used as 10-Gigabit Ethernet interfaces. Each 40-Gbps QSFP+ interface can be split into four 10-Gigabit Ethernet interfaces using a breakout cable. However, port 0 is reserved, so you can only configure an additional fifteen 10-Gigabit Ethernet interfaces.
External devices (USB devices)
Upgrading software from a USB device results in an upgrade failure, and the system enters an invalid state.
Unplug the USB device and reboot the switch.
Initial device configuration
Cannot configure management Ethernet ports.
Configure the management ports from the console port. You cannot configure the management ports by directly connecting to them.
Note: The management ports are on the front panel of the QFX3500 switch. They are labeled C0 and C1 on the front panel. In the CLI they are referred to as me0 and me1.
Software upgrade and configuration
Failed software upgrade.
Active partition becomes inactive after upgrade.
Problem with the active configuration file.
See the following topics:
Root password is lost or forgotten.
Recover the root password. See Recovering the Root Password for Switches.
An aggregated Ethernet interface is down.
Interface on built-in network port is down.
Interface on port in which SFP or SFP+ transceiver is installed in an SFP+ uplink module is down.
A MAC address entry in the Ethernet switching table is not updated after the device with that MAC address has been moved from one interface to another on the switch.
Firewall configuration exceeded available Ternary Content Addressable Memory (TCAM) space.