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CLI-based Configuration Guide - Ethernet Switching

AR650, AR1600, and AR6100 V300R003

This document describes how to configure the components for LAN services, including link aggregation groups, VLANs, voice VLANs, MAC address tables, transparent bridging, as well as GVRP, STP/RSTP, and MSTP protocols.
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Hybrid SEP+MSTP Ring Networking

Hybrid SEP+MSTP Ring Networking

As shown in Figure 12-12, Router1 to Router3 form a SEP segment to access the MSTP ring. The networking is called hybrid SEP+MSTP ring networking. Router1 to Router3 are at the access layer and transparently transmit Layer 2 unicast and multicast services. When SEP runs at the access layer, redundancy protection switching can be implemented at the access layer.

If the topology of the access layer changes, a node in the SEP segment sends a Flush-FDB packet to instruct other nodes in the SEP segment to update their MAC address forwarding tables and ARP tables. Router1 and Router2 at the edge of the SEP segment send a TC packet to notify the aggregation layer of the topology change in the SEP segment.

In hybrid-ring networking, no-neighbor edge interfaces need to be deployed on the edge devices of SEP networks, and the SEP networks need to report topology changes to MSTP networks.

Figure 12-12  Networking diagram of hybrid rings running SEP+MSTP

Updated: 2019-04-12

Document ID: EDOC1100041791

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