Reference Guide

• Enable EdgePort on an interface.
INTERFACE mode
spanning-tree mstp edge-port [bpduguard | shutdown-on-violation]
Dell Networking OS Behavior: Regarding bpduguard shutdown-on-violation behavior:
– If the interface to shut down is a port channel, all the member ports are disabled in the hardware.
– When you add a physical port to a port channel already in the Error Disable state, the new member
port is also disabled in the hardware.
– When you remove a physical port 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).
– You can clear the Error Disabled state with any of the following methods:
* Use the shutdown command on the interface.
* Disable the shutdown-on-violation command on the interface (using the no spanning-
tree stp-id portfast [bpduguard | [shutdown-on-violation]] command).
* Disable spanning tree on the interface (using the no spanning-tree command in
INTERFACE mode).
* Disabling global spanning tree (using the no spanning-tree command in CONFIGURATION
mode).
Example of Enabling an EdgePort on an Interface
To verify that EdgePort is enabled, use the show config command from INTERFACE mode.
Dell(conf-if-Te-3/41)#spanning-tree mstp edge-port
Dell(conf-if-Te-3/41)#show config
!
interface TenGigabitEthernet 3/41
no ip address
switchport
spanning-tree mstp edge-port
spanning-tree MSTI 1 priority 144
no shutdown
Dell(conf-if-Te-3/41)#
Configuring Fast Hellos for Link State Detection
To achieve sub-second link-down detection so that convergence is triggered faster, use RSTP fast hellos.
The standard RSTP link-state detection mechanism does not offer the same low link-state detection
speed.
RSTP fast hellos decrease the hello interval to the order of milliseconds and all timers derived from the
hello timer are adjusted accordingly. This feature does not inter-operate with other vendors, and is
available only for RSTP.
• Configure a hello time on the order of milliseconds.
PROTOCOL RSTP mode
hello-time milli-second interval
The range is from 50 to 950 milliseconds.
Multiple Spanning Tree Protocol (MSTP)
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