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    Configuring Ethernet Loopback Capability

    By default, local aggregated Ethernet, Fast Ethernet, Tri-Rate Ethernet copper, Gigabit Ethernet, and 10-Gigabit Ethernet interfaces connect to a remote system. To place an interface in loopback mode, include the loopback statement:

    Note: If you configure a local loopback on a 1-port 10-Gigabit IQ2 and IQ2-E PIC using the loopback statement at the [edit interfaces interface-name gigether-options] hierarchy level, the transmit-path stops working, causing the remote end to detect a link down.

    To return to the default—that is, to disable loopback mode—delete the loopback statement from the configuration:

    [edit]user@host# delete interfaces fe-fpc/pic/port fastether-options loopback

    To explicitly disable loopback mode, include the no-loopback statement:

    You can include the loopback and no-loopback statements at the following hierarchy levels:

    • [edit interfaces interface-name aggregated-ether-options]
    • [edit interfaces interface-name ether-options]
    • [edit interfaces interface-name fastether-options]
    • [edit interfaces interface-name gigether-options]
     

    Related Documentation

     

    Published: 2012-12-11

    Supported Platforms

     

    Related Documentation

     

    Published: 2012-12-11

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