How does an S series switch running STP update its forwarding table

In STP converge normal mode, an S (except the S1700) series switch deletes MAC address entries or ages ARP entries. In STP converge fast mode, the switch deletes both MAC address and ARP entries.
By default, S series switches (except the S1700) running V100R006 and later versions work in STP converge normal mode, and E series switches work in STP converge normal mode.

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