Switching system, line card, switch card, FDB learning method, FDB learning arbitration method, and program

摘要

A switching system includes a plural of line and a switch card. The line card or cards notifies the out whether or not the line card or line cards is in the FDB learning enabled state. The switch card includes a learning information storage unit that holds in store the FDB learning information received from the multiple line cards and an FDB learning arbitration unit that, when all of the line cards are in an FDB leaning enabled state, selects and sends the FDB learning information, stored in the learning information storage unit, to the respective line cards, based on a notification from each the line cards.