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    Configuring the VXLAN Identifier Mode

    The VXLAN identifier mode can be configured to select an auto-generated VNID or a user-generated VXLAN ID, either through the Contrail web UI or by modifying a python file.

    The following Contrail web UI shows the location for configuring the VXLAN identifier mode at Configure > Infrastructure > Forwarding Options. The user can select one of these options:

    • Automatic— The VXLAN identifier is automatically assigned for the virtual network.
    • Configured– The VXLAN identifier must be provided by the user for the virtual network.

      Note: When Configured is selected, if the user does not provide an identifier, then VXLAN encapsulation is not used and the mode falls back to MPLS.

    Alternatively, the VXLAN identifier mode can be set by using python to modify the file /opt/contrail/utils/encap.py , as follows:

    python encap.py <add | update | delete > <username > < password > < tenant_name > < config_node_ip >

    Modified: 2014-01-02