56• When the number of member ports eligible to be Selected is smaller than the minimum threshold:{ All member ports change to the Unselected state.{ The link of the aggregate interface goes down.• When the minimum threshold is reached, the eligible member ports change to the Selected state,and the link of the aggregate interface goes up.The maximum number of Selected ports allowed in an aggregation group is limited by either theconfigured maximum number or hardware capability, whichever value is smaller.You can configure backup between two ports by performing the following tasks:• Assign two ports to an aggregation group.• Configure the maximum number of Selected ports allowed in the aggregation group as 1.Then, only one Selected port is allowed in the aggregation group at any point in time, while theUnselected port serves as a backup port.To set the minimum and maximum numbers of Selected ports for an aggregation group:Step Command Remarks1. Enter system view. system-view N/A2. Enter aggregate interfaceview.• Enter Layer 2 aggregateinterface view:interface bridge-aggregationinterface-number• Enter Layer 3 aggregateinterface view:interface route-aggregationinterface-numberN/A3. Set the minimum number ofSelected ports for theaggregation group.link-aggregation selected-portminimum numberBy default, the minimum number ofSelected ports for the aggregationgroup is not specified.4. Set the maximum number ofSelected ports for theaggregation group.link-aggregation selected-portmaximum numberBy default, the maximum number ofSelected ports for an aggregationgroup is 32.Configuring the expected bandwidth of an aggregate interfaceStep Command Remarks1. Enter system view. system-view N/A2. Enter aggregate interfaceview.• Enter Layer 2 aggregateinterface view:interface bridge-aggregationinterface-number• Enter Layer 3 aggregateinterface or subinterface view:interface route-aggregation{ interface-number |interface-number.subnumber }N/A
