Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 472
Influence RSTP Root Selection, Indicates the interface is in EdgePort mode
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www.dell.com | support.dell.com FTOS Behavior: Regarding bpduguard shutdown-on-violation behavior: 1 If the interface to be shutdown is a port channel, all the member ports are disabled in the hardware. 2 When a physical port is added to a port channel already in the Error Disable state, the new member port is also disabled in the hardware. 3 When a physical port is removed from a port channel in the Error Disable state, the error disabled state is cleared on this physical port (the physical port is enabled in the hardware). 4 You can clear the Error Disabled state 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 rstp edge-port [bpduguard | [shutdown-on-violation]]). •Disable spanning tree on the interface (no spanning-tree in INTERFACE mode). 5 Disabling global spanning tree (no spanning-tree in CONFIGURATION mode). Figure 27-8. EdgePort Enabled on Interface FTOS(conf-if-te-2/0)#show config ! interface TenGigabitethernet 2/0 no ip address switchport spanning-tree rstp edge-port shutdown FTOS(conf-if-te-2/0)# Indicates the interface is in EdgePort mode Influence RSTP Root Selection The RSTP determines the root bridge, but you can assign one bridge a lower priority to increase the likelihood so that it is selected as the root bridge. To change the bridge priority, use the following command: Task Assign a number as the bridge priority or designate it as the primary or secondary root. priority-value range: 0 to 65535. The lower the number assigned, the more likely this bridge will become the root bridge. The default is 32768. Entries must be multiples of 4096. Command Syntax bridge-priority priority-value Command Mode PROTOCOL SPANNING TREE RSTP A console message appears when a new root bridge has been assigned. Figure 27-9 shows the console message after you use the bridge-priority command to make R2 the root bridge. 470 | Rapid Spanning Tree Protocol (RSTP)
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