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    Understanding Encapsulation on an Interface

    Encapsulation is the process by which a lower-level protocol accepts a message from a higher-level protocol and places it in the data portion of the lower-level frame. As a result, datagrams transmitted through a physical network have a sequence of headers: the first header for the physical network (or Data Link Layer) protocol, the second header for the Network Layer protocol (for example, IP), the third header for the Transport Layer protocol, and so on.

    The following topics are general topics about the way encapsulation works on interfaces and the Junos OS. For the ACX Series routers, keep the following points in mind when referring to these topics:

    • The [edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number] hierarchy level is not supported on the ACX Series routers.
    • Not all encapsulation types or features are supported on the ACX Series routers, refer to the documentation about the specific statement or feature for support details.

    Modified: 2016-05-31