A:On a network where an Eth-Trunk and a stack or a CSS is configured, if an Eth-Trunk interface is configured to preferentially forward local traffic, traffic arriving at the local device is preferentially forwarded through Eth-Trunk member interfaces of the local device. If there is no Eth-Trunk member interface on the local device, traffic is forwarded through Eth-Trunk member interfaces on another device. This forwarding mode effectively saves bandwidth resources of member devices in the stack or CSS and improves traffic forwarding efficiency.
You can run the local-preference { enable | disable } command in the Eth-Trunk interface view to enable or disable preferential forwarding of local traffic on an Eth-Trunk interface. By default, an Eth-Trunk forwards traffic preferentially through local member interfaces.
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