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NE40E-M2 V800R010C10SPC500 Feature Description - LAN Access and MAN Access 01

This is NE40E-M2 V800R010C10SPC500 Feature Description - LAN Access and MAN Access
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Overview of Layer 2 Protocol Tunneling

Overview of Layer 2 Protocol Tunneling

Definition

Layer 2 protocol tunneling allows Layer 2 devices to use Layer 2 tunneling technology to transparently transmit Layer 2 protocol data units (PDUs) across a Layer 2 network. Layer 2 protocol tunneling supports standard protocols, such as Spanning Tree Protocol (STP), Link Aggregation Control Protocol (LACP), as well as user-defined protocols.

Purpose

Layer 2 protocol tunneling ensures transparent transmission of private Layer 2 PDUs over a public network. The ingress device replaces the multicast destination MAC address in the received Layer 2 PDUs with a specified multicast MAC address before transmitting them onto the public network. The egress device restores the original multicast destination MAC address and then forwards the Layer 2 PDUs to their destinations.

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Updated: 2019-01-02

Document ID: EDOC1100058405

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