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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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Terminology for BPDU Tunneling

Terminology for BPDU Tunneling

Terms

Term

Definition

STP

Spanning Tree Protocol. A protocol used in the local area network (LAN) to eliminate loops. Devices running STP discover loops in the network by exchanging information with each other, and block certain interfaces to eliminate loops.

MSTP

Multiple Spanning Tree Protocol. A new spanning tree protocol defined in IEEE 802.1s that introduces the concepts of region and instance. To meet different requirements, MSTP divides a large network into regions where multiple spanning tree instances (MSTIs) are created. These MSTIs are mapped to virtual LANs (VLANs) and bridge protocol data units (BPDUs) carrying information about regions and instances are transmitted between network bridges, and therefore, a network bridge can know which region itself belongs to based on the BPDU information. Multi-instance RSTP is run within regions, whereas RSTP-compatible protocols are run between regions.

QinQ interface

An interface that can process VLAN frames with a single tag (Dot1q termination) or with double tags (QinQ termination).

Acronyms and Abbreviations

Acronym and Abbreviation

Full Name

STP

Spanning Tree Protocol

MSTP

Multiple Spanning Tree Protocol

BPDU

Bridge Protocol Data Unit

VLAN

Virtual Local Area Network

PVID

Port Default VLAN ID

QinQ

802.1Q in 802.1Q

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Updated: 2019-01-02

Document ID: EDOC1100058405

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