Reference Guide

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 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.
Z-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 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.
1113