Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 435
Flush MAC Addresses after a Topology Change, Configuring EdgePort, Command Syntax
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To enable EdgePort on an interface, use the following command: Task Enable EdgePort on an interface. Command Syntax spanning-tree mstp edge-port [bpduguard | shutdown-on-violation] Command Mode INTERFACE Verify that EdgePort is enabled on a port using the command show config from the INTERFACE mode, as shown in Figure 22-8. FTOS Behavior: Regarding bpduguard shutdown-on-violation behavior: 1 If the interface to be shutdown is a port channel then all the member ports are disabled in the hardware. 2 When a physical port is added to a port channel already in error disable state, the new member port will also be disabled in the hardware. 3 When a physical port is removed from a port channel in error disable state, the error disabled state is cleared on this physical port (the physical port will be enabled in the hardware). 4 The reset linecard command does not clear the error disabled state of the port or the hardware disabled state. The interface continues to be disables in the hardware. The error disabled state can be cleared with any of the following methods: •Perform an shutdown command on the interface. •Disable the shutdown-on-violation command on the interface ( no spanning-tree stp-id portfast [bpduguard | [shutdown-on-violation]] ). •Disable spanning tree on the interface (no spanning-tree in INTERFACE mode). •Disabling global spanning tree (no spanning-tree in CONFIGURATION mode). Figure 22-8. Configuring EdgePort Force10(conf-if-gi-3/41)#spanning-tree mstp edge-port Force10(conf-if-gi-3/41)#show config ! interface GigabitEthernet 3/41 no ip address switchport spanning-tree mstp edge-port spanning-tree MSTI 1 priority 144 no shutdown Force10(conf-if-gi-3/41)# Flush MAC Addresses after a Topology Change FTOS has an optimized MAC address flush mechanism for RSTP, MSTP, and PVST+ that flushes addresses only when necessary, which allows for faster convergence during topology changes. However, you may activate the flushing mechanism defined by 802.1Q-2003 using the command tc-flush-standard, which flushes MAC addresses upon every topology change notification. View the enable status of this feature using the command show running-config spanning-tree mstp from EXEC Privilege mode. Multiple Spanning Tree Protocol | 435
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