Administrator Guide

tc-flush-standard
Enable the MAC address flushing after receiving every topology change notification.
C9000 Series
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 Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.5.1.0 Introduced.
Usage
Information
By default, the system implements an optimized flush mechanism for PVST+. This implementation 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, you can turn this knob
command on to enable flushing MAC addresses after receiving every topology change notification.
vlan bridge-priority
Set the PVST+ bridge-priority for a VLAN or a set of VLANs.
C9000 Series
Syntax
vlan vlan-range bridge-priority value
To return to the default value, use the no vlan bridge-priority command.
Parameters
vlan vlan-range Enter the keyword vlan then the VLAN numbers. The range is from 1 to 4094.
bridge-priority
value
Enter the keywords bridge-priority then the bridge priority value in
increments of 4096. The range is from 0 to 61440. The default is 32768.
Defaults 32768
Command Modes CONFIGURATION (conf-pvst)
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Per-VLAN Spanning Tree Plus (PVST+) 1289