HP 6125G HP 6125G & 6125G/XG Blade Switches High Availability Configur - Page 97
Configuring Smart Link, Smart Link overview, Background
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Configuring Smart Link Smart Link overview Background To avoid single-point failures and guarantee network reliability, downstream devices are usually dual-homed to upstream devices, as shown in Figure 22. Figure 22 Diagram for a dual uplink network To remove network loops on a dual-homed network, you can use a spanning tree protocol or the Rapid Ring Protection Protocol (RRPP). The problem with STP, however, is that STP convergence time is long, which makes it not suitable for users who have high demand on convergence speed. RRPP can meet users' demand on convergence speed, but it involves complicated networking and configurations and is mainly used in ring-shaped networks. For more information about STP and RRPP, see Layer 2-LAN Switching Configuration Guide and "Configuring RRPP." Smart Link is a feature developed to address the slow convergence issue with STP. It provides link redundancy as well as fast convergence in a dual uplink network, allowing the backup link to take over quickly when the primary link fails. To sum up, Smart Link has the following features: 90
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