US 11,757,772 B2
Stacking switch unit and method used in stacking switch unit
Tai-Yi Huang, HsinChu (TW); Ming-Dao Chen, HsinChu (TW); and Yu-Yi Lin, HsinChu (TW)
Assigned to Realtek Semiconductor Corp., HsinChu (TW)
Filed by Realtek Semiconductor Corp., HsinChu (TW)
Filed on Aug. 2, 2021, as Appl. No. 17/391,057.
Claims priority of application No. 110103892 (TW), filed on Feb. 2, 2021.
Prior Publication US 2022/0247676 A1, Aug. 4, 2022
Int. Cl. H04L 45/00 (2022.01); G06F 15/173 (2006.01); H04L 45/58 (2022.01); H04L 45/60 (2022.01); H04L 49/113 (2022.01); H04L 49/112 (2022.01); H04L 45/037 (2022.01)
CPC H04L 45/583 (2013.01) [H04L 45/037 (2022.05); H04L 45/60 (2013.01); H04L 49/112 (2022.05); H04L 49/113 (2022.05)] 15 Claims
OG exemplary drawing
 
1. A method used in a stacking switch unit which is capable of being stacked with at least one other stacking switch unit, comprising:
providing the stacking switch unit having a plurality of signal ports, the plurality of signal ports comprising at least one specific signal port, the at least one specific signal port comprising at least one strapping pin or at least one control pin and the at least one specific signal port being arranged for determining a master/slave role of the stacking switch unit when the stacking switch unit operating under a stacking mode;
operating under the stacking mode during a boot-up procedure of the stacking switch unit, automatically determining whether the stacking switch unit is a master switch unit or a slave switch unit according to at least one signal level of the at least one specific signal port or content of at least one bit of data obtained from the at least one specific signal port; and
when the stacking switch unit is the master switch unit, generating a stack configuration setting, and transmitting the stack configuration setting to the at least one other stacking switch unit, which is connected to the stacking switch unit, through at least one of a first signal port and a second signal port among the plurality of signal ports of the stacking switch unit, to make the stacking switch unit complete a stacking connection with the at least one other stacking switch unit.