Reference Guide

Version 6.5.1.0 Introduced on the E-Series.
Usage
Information
On an MSTP switch, a port configured as an edge port immediately transitions to the
Forwarding state. Only configure ports connected to end-hosts as edge ports. Consider an
edge port similar to a port with spanning-tree portfast enabled.
If you do not enable shutdown-on-violation, BPDUs are still sent to the RPM CPU.
tc-flush-standard
Enable the MAC address flushing after receiving every topology change notification.
S4820T
Syntax
tc-flush-standard
To disable, use the no tc-flush-standard command.
Defaults Disabled.
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
Version 6.5.1.0 Introduced
Usage
Information
By default, FTOS implements an optimized flush mechanism for MSTP. This 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.
910