Understanding Encapsulation On An Interface; Gigabit Ethernet Autonegotiation Overview - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide
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Understanding Encapsulation on an Interface

Related
Documentation

Gigabit Ethernet Autonegotiation Overview

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Junos OS VPNs Library for Routing Devices
Configuring an Unnumbered Interface
Configuring the Interface Address
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
hierarchy level is not supported on the ACX Series routers.
logical-unit-number]
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.
Configuring Interface Encapsulation on Logical Interfaces
Configuring Interface Encapsulation on Physical Interfaces
encapsulation (Physical Interface) on page 1511
encapsulation (Logical Interface) on page 1507
Autonegotiation is enabled by default on all Gigabit Ethernet and Tri-Rate Ethernet
copper interfaces. However, you can explicitly enable autonegotiation to configure remote
fault options manually.
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