H3C S3100-52P Operation Manual

Also see for S3100-52P: Operation manual Operation manual Operation manual Operation manual Operation manual

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H3C S3100-52P Operation Manual Manual pdf 7 page image

Operation Manual – Link AggregationH3C S3100-52P Ethernet Switch Chapter 1 Link Aggregation Configuration1-6Note:Changing the system priority of a device may change the preferred device between thetwo parties, and may further change the states (selected or unselected) of the memberports of dynamic aggregation groups.IV. Configuring port priorityLACP determines the selected and unselected states of the dynamic aggregationgroup members according to the port IDs on the device with the preferred device ID.When the number of members in an aggregation group exceeds the number ofselected ports supported by the device in each group, LACP determines the selectedand unselected states of the ports according to the port IDs. The ports with superiorport IDs will be set to selected state and the ports with inferior port IDs will be set tounselected state.The port ID consists of two-byte port priority and two-byte port number, that is, port ID =port priority + port number. When two port IDs are compared, the port priorities arecompared first, and the port numbers are compared if the port priorities are the same.The port with smaller port ID is considered as the preferred one.1.1.7 Aggregation Group CategoriesDepending on whether or not load sharing is implemented, aggregation groups can beload-sharing or non-load-sharing aggregation groups. When load sharing isimplemented,z For IP packets, the system will implement load-sharing based on source IPaddress and destination IP address;z For non-IP packets, the system will implement load-sharing based on source MACaddress and destination MAC address.In general, the system only provides limited load-sharing aggregation resources(currently N/2 load-sharing aggregation groups can be created at most, N is the numberof ports), so the system needs to reasonably allocate the resources among differentaggregation groups.The system always allocates hardware aggregation resources to the aggregationgroups with higher priorities. When load-sharing aggregation resources are used up byexisting aggregation groups, newly-created aggregation groups will benon-load-sharing ones.Load-sharing aggregation resources are allocated to aggregation groups in thefollowing order: