Method for automatically changing a topology of a plurality of network switches

A method for automatically changing a topology of a plurality of network switches, the method being used on a topology structure that includes a to-be-tested stack, a neighboring device and a switch device, the to-be-tested stack being connected to the neighboring device and the switch device through Link Aggregation Control Protocol (LACP), the to-be-tested stack including a number M of network switches that are stacked in a manner where any adjacent two of the network switches are connected to each other, M being not smaller than 5, each of the network switches that is not a last switch among the number M of network switches being connected directly to the last switch, a first switch being connected directly to a third-to-last switch among the number M of network switches, the method being implemented using a computing device connected to the topology structure and comprising steps of:

• a) activating a number (j) of network switches included in the to-be-tested stack as activated switches, the number (i) of network switches including a first switch and last (j−1) network switches in the to-be-tested stack, j being an integer not smaller than 5;
• b) deactivating two of the activated switches excepting the last switch, the first switch and the third-to-last switch as deactivated switches;
• c) decoupling the last switch and the third-to-last switch from the other activated switches, and resetting the last switch and the third-to-last switch;
• d) disabling settings of LACP between the last switch and the switch device, disabling settings of LACP between the last switch and the neighboring device, and performing a reset configuration operation to reconfigure a connection setting between the last switch and the switch device and a connection setting between the last switch and the neighboring device;
• e) disabling settings of LACP between the third-to-last switch and the switch device, disabling settings of LACP between the third-to-last switch and the neighboring device, and performing a reset configuration operation to reconfigure a connection setting between the third-to-last switch and the switch device and a connection setting between the third-to-last switch and the neighboring device;
• f) establishing settings of LACP between the last switch and each of the activated switches that is not one of the last switch and the third-to-last switch;
• g) configuring a connection setting between the third-to-last switch and the first switch;
• and
• h) configuring a connection setting between the third-to-last switch and the last switch.