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AR500, AR510, and AR530 V200R007 CLI-based Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring transparent bridge, MAC table, link aggregation, VLANs, STP/RSTP/MSTP, and so on.The document provides the configuration procedures and configuration examples to illustrate the service configuration methods and application scenario.
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Application Environment

Application Environment

As shown in Figure 14-3, CE1 and CE2 are edge devices on private networks of User A in different locations. The two private networks connect to the ISP network through PE1 and PE2. Networks of User A have redundant links, so MSTP is used to remove loops on the Layer 2 network. When MSTP packets sent by CEs reach PEs, PEs send the packets to the CPUs for processing because they cannot identify the network that MSTP packets come from. Layer 2 protocol calculations on the user network and ISP network affect each other and cannot be implemented independently.

You can configure Layer 2 protocol transparent transmission on PEs, so that MSTP packets are not sent to the CPUs of PEs for processing. This prevents PEs from participating in spanning tree calculation.

Figure 14-3  Networking of Layer 2 protocol transparent transmission

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Updated: 2019-05-25

Document ID: EDOC1000097279

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