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Configuration Guide - Ethernet Switching

S1720, S2700, S5700, and S6720 V200R012(C00 and C20)

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Hybrid SEP+MSTP Ring Networking

Hybrid SEP+MSTP Ring Networking

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. When SEP runs at the access layer, redundancy protection switching can be implemented at the access layer.

Figure 16-13 shows a networking diagram of hybrid rings running SEP+MSTP.

Figure 16-13  Hybrid rings running SEP+MSTP

In Figure 16-13, LSW1 to LSW3 form a SEP segment to access the MSTP ring. LSW1 to LSW3 are at the access layer and transparently transmit Layer 2 unicast and multicast services.

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 tables and ARP tables. LSW1 and LSW2 at the edge of the SEP segment send a TC packet to notify the aggregation layer of the topology change in the SEP segment.

Updated: 2018-12-24

Document ID: EDOC1100038339

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