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Configuring Locality Bias for a Virtual Chassis

Configuring locality bias enables you to conserve Virtual Chassis port bandwidth, reduce infrastructure costs, and reduce network latency in a two-member Virtual Chassis. Locality bias works by directing unicast traffic for equal-cost multipath (ECMP) groups and aggregated Ethernet bundles to egress links in the same (local) member router in the Virtual Chassis rather than to egress links in the remote member router.

You can enable locality bias by including the locality-bias statement at the [edit virtual-chassis] hierarchy level.

Best Practice:

To avoid possible traffic loss and oversubscription on egress interfaces, make sure you understand the utilization requirements for the local links in your network before changing the locality bias configuration.

To configure locality bias for a Virtual Chassis:

  1. Specify that you want to enable locality bias in the Virtual Chassis.
  2. Commit the configuration.

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