Reference Guide

• If a BPDU is received from a remote device, BPDU guard places the port in an
err-disabled blocking state and no traffic is forwarded on the port.
• If no BPDU is received from a remote device, loop guard places the port in a
loop-inconsistent blocking state and no traffic is forwarded on the port.
tc-flush-standard
Enable the MAC address flushing after receiving every topology change notification.
S5000
Syntax
tc-flush-standard
To disable, use the no tc-flush-standard command.
Defaults Disabled.
Command
Modes
CONFIGURATION
Command
History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
By default, Dell Networking OS implements an optimized flush mechanism for
MSTP. This 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.
938
Multiple Spanning Tree Protocol (MSTP)