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tc-flush-standard
Enable the MAC address flushing after receiving every topology change notification.
Syntax
tc-flush-standard
To disable, use the no tc-flush-standard command.
Defaults Disabled.
Command Modes CONFIGURATION
Supported Modes Full—Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
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.
Syntax
vlan vlan-id 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)
Supported Modes Full—Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Related
Commands
vlan forward-delay — changes the time interval before the system transitions to the Forwarding state.
vlan hello-time — change the time interval between BPDUs.
vlan max-age — changes the time interval before PVST+ refreshes.
show spanning-tree pvst — displays the PVST+ configuration.
vlan forward-delay
Set the amount of time the interface waits in the Listening state and the Learning state before transitioning to the Forwarding
state.
Syntax
vlan vlan-id forward-delay seconds
Per-VLAN Spanning Tree Plus (PVST+) 937