Spanning Tree Protocol (STP) Commands 51
2 Switching Commands
Port Path Cost The configured path cost for the specified interface.
Designated Root Identifier of the designated root for this port within the CST.
Designated Port Cost Path Cost offered to the LAN by the Designated Port.
Designated Bridge The bridge containing the designated port
Designated Port Identifier Port on the Designated Bridge that offers the lowest cost to the
LAN
Topology Change Acknowledgement Value of flag in next Configuration Bridge Protocol
Data Unit (BPDU) transmission indicating if a topology change is in progress
for this port.
Hello Time The hello time in use for this port.
Edge Port The configured value indicating if this port is an edge port.
Edge Port Status The derived value of the edge port status. True if operating as an edge
port; false otherwise.
Point To Point MAC Status Derived value indicating if this port is part of a point to point
link
.
CST Regional Root The regional root identifier in use for this port.
CST Port Cost The configured path cost for this port.
show spanning-tree mst port summary
This command displays the settings of one or all ports within the specified multiple spanning
tree instance. The parameter
<mstid> indicates a particular MST instance. The parameter
{
<slot/port> | all} indicates the desired switch port or all ports.
If you specify 0 (defined as the default CIST ID) as the
<mstid>, the status summary displays
for one or all ports within the common and internal spanning tree.
Format
show spanning-tree mst port summary <mstid> {<slot/port> | all}
Modes Privileged EXEC
User EXEC
MST Instance ID The MST instance associated with this port.
Interface Valid slot and port number separated by forward slashes.
Type Currently not used.
STP State The forwarding state of the port in the specified spanning tree instance
Port Role The role of the specified port within the spanning tree.
Link Status The operational status of the link. Possible values are “Up” or “Down”.
Link Trap The link trap configuration for the specified interface.
show spanning-tree mst summary
This command displays summary information about all multiple spanning tree instances in the
switch. On execution, the following details are displayed.
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