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Switching Commands
40
ProSafe M4100 and M7100 Managed Switches
spanning-tree bpduforwarding
Normally a switch will not forward Spanning Tree Protocol (STP) BPDU packets if STP is
disabled. However, if in some network setup, the user wishes to forward BDPU packets
received from other network devices, this command can be used to enable the forwarding.
Default
Format spanning-tree bpduforwarding
Mode
no spanning-tree bpduforwarding
This command will cause the STP BPDU packets received from the network to be dropped if
STP is disabled.
Format no spanning-tree bpduforwarding
Mode
show spanning-tree
This command displays spanning tree settings for the Common and Internal Spanning Tree.
The following details are displayed.
Format show spanning-tree
Mode
• Privileged EXEC
• User EXEC
disabled
Global Config
Global Config
Term Definition
Bridge Priority
Specifies the bridge priority for the Common and Internal Spanning Tree (CST). The
value lies between 0 and 61440. It is displayed in multiples of 4096.
Bridge Identifier
The bridge identifier for the CST. It is made up using the bridge priority and the base
MAC address of the bridge.
Time Since
Topology
Change
Time in seconds.
Topology
Change Count
Number of times changed.
Topology
Change
Boolean value of the Topology Change parameter for the switch indicating if a topology
change is in progress on any port assigned to the Common and Internal Spanning Tree.
Designated
Root
The bridge identifier of the root bridge. It is made up from the bridge priority and the base
MAC address of the bridge.
Root Path Cost
Value of the Root Path Cost parameter for the Common and Internal Spanning Tree.