Interface index: 187, SNMP ifIndex: 591, Generation: 190 Physical interface: xe-2/0/0, Enabled, Physical link is Up Sample Output show interfaces xe-2/0/0 extensive Mode command: show interfaces ( xe- fpc/ pic/ port | et- fpc/ pic/ port) Is up, use the following Junos OS command-line interface (CLI) operational To verify that the status of the Gigabit Ethernet interface Interfaces interface-name gigether-options hierarchy level, places the interface into local loopback mode. Simply including the loopback statement at the [edit There is no option to use a local or remote statement. On anĮthernet interface, you cannot create a remote loopback, therefore Of the PIC but does not test the transmit and receive ports. A local loopback tests the interconnection When you create a local loopback, you create an internal loop In configuration mode, go to the following hierarchy level: edit interfaces interface-name gigether-optionsĬonfigure the local loopback: [edit interfaces interface-name set loopbackįor example: [edit interfaces xe-2/0/0 showįor example: [edit interfaces xe-2/0/0 commit The transmit port to the receive port, follow these steps: To configure a local loopback without physically connecting Perform Steps 2 through 8 from Diagnose a Suspected Hardware Problem with a Fast Show interfaces (xe- fpc/pic/port | et- fpc/pic/port ) extensive Interface (xe- fpc/pic/port | et- fpc/pic/port count 100Ĭheck for Gigabit Ethernet Interface Error Statistics Show interfaces (xe- fpc/pic/port | et- fpc/pic/port) Ĭlear Gigabit Ethernet Interface StatisticsĬlear interfaces statistics xe- fpc/pic/port | et- fpc/pic/port Show interfaces (xe- fpc/pic/port | et- fpc/pic/port)Ĭonfigure a Static Address Resolution Protocol Table Verify That the Gigabit Ethernet Interface Is Up Use a working part if moving on to test the next part of the setup.Īnd as always if you need further help please send us an email to a detailed explanation and we will help you as quickly as possible.For Using Loopback Testing for 10, 40, and 100 Gigabit Ethernet Interfacesĭiagnose a Suspected Hardware Problem with a GigabitĬreate a Physical Loopback for a Fiber-Optic InterfaceĬonnect the transmit port to the receive port. If the part is not responding, then there is something wrong with the wiring or the part is damaged. If the letter(s) appear then the part being tested is doing its job (there could still be other issues with the part). Picture 1 showing how this will look on your screen: Now type the letter A as a command and press send, this letter/signal should be rerouted back.Īny letter written SHOULD be shown on the screen when sent.Open the terminal emulator “Communication - Terminal Emulator”.Choose the correct com port via “Communication - Serial port”.Open the Nortek program normally used to connect to the instrument (AquaPro, Aquadopp, AWAC or Vector).Connect the converter to the PC using the USB.Loop the send and receive pin (Tx = transmit, Rx = receive).This can be a very helpful tool when troubleshooting. It basically loops back the sent signal as the received signal. The signal the PC sends out is then sent back to the PC and is shown in the terminal emulator. The PC will send a signal via the “receive” pin (from instruments point of view) that is looped back to the send pin by connecting the send and receive pins. Working your way from the converter to the electronics card will test all parts of the setup, one by one. 24-pin Molex connected to the electronics cardĪ loopback test can be performed at every step within the setup to track down a potential error in the communication lines.9-pin Molex connected to the connector on the inside of the end-bell.8-pin end-bell connector at the wet end of the cable.9-pin D-sub (connects to the converter).Opening the instrument and accessing the electronics or performing repairs requires technical understanding, please follow the manual and if you are unsure about anything have a technician perform the work or contact Nortek support.Ī standard Nortek midlife instrument communication setup consists of these parts you can perform a loopback test on: Please consult the troubleshooting section (chapter 5) in the comprehensive manual before starting to troubleshoot your instrument.
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