H3C Technologies H3C S7500E Series Switches - Manual (Page 111)

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8
Smart Link Configuration
This chapter includes these sections:
z Smart Link Overview
z Smart Link Configuration Task List
z Configuring a Smart Link Device
z Configuring an Associated Device
z Displaying and Maintaining Smart Link
z Smart Link Configuration Examples
Smart Link Overview
Background
To avoid single-point failures and guarantee network reliability, downstream devices are usually dual
uplinked to upstream devices. That is, a downstream device connects to two different upstream
devices, as shown in Figure 8-1 .
Figure 8-1 Diagram for a dual uplink network
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A dual uplink network demonstrates high reliability, but it may contain network loops. In most cases,
Spanning Tree Protocol (STP) or Rapid Ring Protection Protocol (RRPP) is used to remove network