HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 2 - LAN Switching Co - Page 48
Limiting the number of Selected ports for an aggregation group, Configuration guidelines, Shutting
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Limiting the number of Selected ports for an aggregation group The bandwidth of an aggregate link increases along with the number of selected member ports. To avoid congestion caused by insufficient Selected ports on an aggregate link, you can set the minimum number of Selected ports required for bringing up the specific aggregate interface. This minimum threshold setting affects the aggregation state of both aggregation member ports and the aggregate interface in the following ways: • All member ports change to the Unselected state and the link of the aggregate interface goes down, when the number of member ports eligible for being selected is smaller than the minimum threshold. • When the minimum threshold is reached, the eligible member ports change to the Selected state, and the link of the aggregate interface goes up. Configuration guidelines Follow these guidelines when you configure the port threshold settings: • If you set a minimum threshold for a static aggregation group, also make the same setting for its peer aggregation group to guarantee correct aggregation. • Make sure the two link aggregation ends have the same minimum numbers of selected ports. Make sure you understand the following impacts of the port threshold settings: • Configuring the minimum number of Selected ports required to bring up an aggregation group may cause all the member ports in the aggregation group to become unselected. To limit the number of Selected ports for an aggregation group: Step 1. Enter system view. Command system-view Remarks N/A 2. Enter Layer 2 aggregate interface view. interface bridge-aggregation interface-number Use either command. 3. Set the minimum number of Selected link-aggregation selected-port ports for the aggregation group. minimum number Not specified by default. Shutting down an aggregate interface Shutting down or bringing up an aggregate interface affects the aggregation state and link state of ports in the corresponding aggregation group in the following ways: • When an aggregate interface is shut down, all Selected ports in the corresponding aggregation group become unselected and their link state becomes down. • When an aggregate interface is brought up, the aggregation state of ports in the corresponding aggregation group is recalculated and their link state becomes up. To shut down an aggregate interface: Step 1. Enter system view. Command system-view Remarks N/A 39