Dell S6000-ON, Configuration Manual

Page: 586 / 1080

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 be 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).
– The
reset linecard
command does not clear the Error Disabled state of the port or the
Hardware Disabled state. The interface continues to be disabled 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-3/11/1)#spanning-tree mstp edge-port
Dell(conf-if-te-3/11/1)#show config
!
interface TenGigabitEthernet 3/11/1
no ip address
switchport
spanning-tree mstp edge-port
spanning-tree MSTI 1 priority 144
no shutdown
Dell(conf-if-te-3/11/1)#
Flush MAC Addresses after a Topology Change
Dell Networking OS 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
tc-flush-
standard
command, which flushes MAC addresses after every topology change notification.
To view the enable status of this feature, use the
show running-config spanning-tree mstp
command from EXEC Privilege mode.
MSTP Sample Configurations
The running-configurations support the topology shown in the following illustration.
The configurations are from Dell Networking OS systems.
586
Multiple Spanning Tree Protocol (MSTP)