H3C S9500 Series Operation Manual

Also see for S9500 Series: Operation manual Operation manual Operation manual Operation manual Operating manual

Contents

Operation Manual – PortH3C S9500 Series Routing Switches Chapter 3 Link Aggregation Configuration3-2information from the sender, the receiver compares it with the locally saved informationabout other ports, chooses member ports for the aggregation group and reachesagreement about if a port can join or leave a dynamic aggregation group.During port aggregation, LACP generates a configuration mix according to the portconfiguration (rate, duplex, basic configuration, management key), which is called anoperation key. The management key of an LACP-enabled dynamic aggregation port is0 by default. The management key of an LACP-enabled static aggregation port is thesame as the aggregation group ID. In a dynamic aggregation group, the member portsmust have the same operation key. In manual and static aggregation groups, the activeports have the same operation key.3.1.3 Aggregation TypesPort aggregation can be divided into manual aggregation, dynamic LACP aggregationand static LACP aggregation.I. Manual aggregation and static LACP aggregationBoth manual aggregation and static LACP aggregation are configured manually, andcannot be added or removed automatically by the system. A manual or static LACPaggregation group must contain a member port at least. In the case of one port in anaggregation group, the unique method for you to remove the port from the aggregationgroup is to delete the aggregation group. By default, the system disables the LACP forthe manual aggregation port. You are prohibited to enable the LACP for the manualaggregation port. By default, the system enables the LACP for the static aggregationport. When a static aggregation group is removed, the member ports will form one ormore dynamic LACP aggregation groups with LACP enabled. You are prohibited todisable the LACP for the static aggregation port.In manual and static aggregation groups, ports can be in active or inactive state. Theport in active state can transmit and receive user service packets, but the port ininactive state cannot. The active port with the minimum port number serves as themaster port, while others as slave ports.In a manual aggregation group, the system sets the ports to active or inactive statebased on these rules:z Based on the descending order of priority levels from full duplex/high speed, to fullduplex/low-speed, to half duplex/high speed and till half duplex/low speed, thesystem sets the port with the highest priority to active state, and others to inactivestate.z The system sets to inactive state the ports which cannot aggregate with themaster port, due to hardware limit (such as trans-board aggregation is forbidden).z The system sets to inactive state the ports with basic configurations different fromthe active port.