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Bypassing a Wavelength


The IPLC enables you to optically bypass a wavelength by entering a few simple configuration statements. Bypassing a wavelength does not terminate the wavelength at the local IPLC but instead passes the wavelength on to the next downstream IPLC node. Optical bypasses are software configurable and controlled through the IPLC’s wavelength selective switch (WSS) so there is no need for manually swapping cables or other manual intervention. The IPLCs software optical bypass enables wavelengths that do not terminate on the given node to be passed-through to the remote IPLC node without optical-electrical-optical (OEO) conversion.

You can use this procedure to manage express traffic at intermediate, two-degree IPLC nodes. This topic describes how to bypass a wavelength on the IPLC module.


Bypassing wavelengths is supported only on IPLC two-degree nodes running express traffic. For more information, see Configuring a Two-Degree Node for Express Traffic.

Before you begin, configure the IPLC two-degree intermediate node for express traffic. See Configuring a Two-Degree Node for Express Traffic.

To configure the IPLC to bypass a wavelength:

  1. Access the IPLC configuration hierarchy and specify the wavelength you want to bypass.

    For example, to bypass wavelength 1532.29 on the IPLC in slot 1:

  2. Verify that the configuration is correct. For example:
  3. If the configuration is correct, save it.