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S12700 V200R010C00 Configuration Guide - Reliability

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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Load Balancing in a Smart Link Group

Load Balancing in a Smart Link Group

Smart Link prevents loops in dual-homing networking. However, because only one uplink is active at any given time, the link utilization is only 50%. Smart Link provides the load balancing function to improve link utilization.

Figure 6-12  Load balancing in a Smart Link group

In Figure 6-12, a load balancing instance is configured and associated with VLAN 300 to VLAN 400. Data packets of VLAN 300 to VLAN 400 are forwarded through the backup link of SwitchD. VLAN 100 to VLAN 200 are not associated with the load balancing instance, so packets of these VLANs are forwarded through the primary link. In this way, traffic from different VLANs is shared between the two links, improving link utilization.

Updated: 2019-08-21

Document ID: EDOC1000142090

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