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S9300 and S9300E Series Switches Product Description

This document describes the positioning, characteristics, architecture, link features, service features, application scenarios, operation and maintenance functions, and technical specifications of the switch.
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Smart Link in Dual-Homing Networking

Smart Link in Dual-Homing Networking

Generally, Smart Link is used on dual-homing Ethernet networks for fast switching of links.

Figure 3-7  Network diagram of Smart Link deployed in a dual-homing network

Smart Link can be deployed anywhere on a MAN to provide dual-homing connections. Using Smart Link, UPE 1 or UPE 2 is dual-homed to PE-AGG 1 and PE-AGG 2.

As shown in the figure, Smart Link group is configured on UPE 1 and UPE 2, and upstream devices only need to receive and send Flush packets. In the two uplinks, one link forwards packets while the other is blocked. When the active link fails, Smart Link quickly senses the fault and switches traffic to the standby link.

The Monitor Link group can be configured on PE-AGG 1 and PE-AGG 2 to associate uplink interface with downlink interface.

Updated: 2019-05-16

Document ID: EDOC1000027369

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