PLANET XGS3-24040 - Manual (Page 209)

13-75
Command mode:
Global mode
Default:
Enable
Usage Guide:
According to MSTP, when topology changes, the port that send change message clears MAC/ARP
table (FLUSH). In fact it is not needed for some network environment to do FLUSH with every
topology change. At the same time, as a method to avoid network assault, we allow the network
administrator to configure FLUSH mode by the command
Note: For the complicated network, especially need to switch from one spanning tree branch to
another rapidly, the disable mode is not recommended.
Example:
Configure the spanning-tree flush mode once the topology changes is not flush to TC.
Switch(config)#spanning-tree tcflush disable
Switch(config)#
13.1.24 spanning-tree tcflush (Port mode)
Command:
spanning-tree tcflush {enable| disable| protect}
no spanning-tree tcflush
Function:
Configure the spanning-tree flush mode for port once the topology changes. “no spanning-tree
tcflush” restores to default setting.
Parameter:
enable: The spanning-tree flush once the topology changes.
disable: The spanning tree don’t flush when the topology changes.
protect: the spanning-tree flush not more than one time every ten seconds.
Command mode:
Port Mode
Default:
Global configuration
Usage Guide:
According to MSTP, when topology changes, the port that send change message clears MAC/ARP
table (FLUSH). In fact it is not needed for some network environment to do FLUSH with every
topology change. At the same time, as a method to avoid network assault, we allow the network
administrator to configure FLUSH mode by the command
Note: For the complicated network, especially need to switch from one spanning tree branch to
another rapidly, the disable mode is not recommended.