Dell MXL 10GbE Reference Manual page 911

Defaults Disabled.
Command CONFIGURATION
Modes
Command
Version 8.3.16.1
History
Usage By default, the sytem implements an optimized flush mechanism for MSTP. This
Information mechanism helps in flushing the MAC addresses only when necessary (and less
often) allowing for faster convergence during topology changes. However, if a
standards-based flush mechanism is needed, this knob command can be turned
on to enable flushing MAC addresses after receiving every topology change
notification.
Multiple Spanning Tree Protocol (MSTP)
Introduced on the MXL 10/40GbE Switch IO Module.
911