Specifications

show spanning-tree
224
0/20 Up Status:Forwarding Role:Root PortFast
0/21 Down Status:Disabled Role:- -
0/22 Up Status:Blocking Role:Alternate -
ChGr:8 Down Status:Disabled Role:- RootGuard
>
Display items in Example 1
Item Meaning Displayed information
VLAN VLAN ID ID of the VLAN on which PVST+ Spanning Tree
Protocol is operating.
(Disabled) is displayed if the VLAN is not running.
PVST+ Spanning
Tree:
Operating status of the
PVST+ Spanning Tree
Protocol
Enabled: The Spanning Tree Protocol is running.
Disabled: The Spanning Tree Protocol is not running.
Mode Configured protocol type PVST+:
The protocol type is set to PVST+ mode.
Rapid PVST+:
The protocol type is set to Rapid PVST+ mode.
Bridge ID Bridge ID on the Switch --
Priority Bridge priority 0 to 65535
The lower the value, the higher the priority.
MAC Address MAC address MAC address of the Switch
Bridge Status Status of the Switch Root: Root bridge
Designated: Designated bridge
Root Bridge ID Bridge ID for the root bridge --
Priority Bridge priority 0 to 65535
The lower the value, the higher the priority.
MAC Address MAC address MAC address for root bridge
Root Cost Root path cost Path cost value from the Switch to the root bridge
0 is displayed if the Switch is the root bridge.
Root Port Root port Displays the port number of the root port. If the root port
is a link aggregation port, the port list for the channel
group and the channel group number (ChGr) are
displayed.
A hyphen (-) is displayed if the Switch is the root bridge.
Port Information Displays information about the ports managed by the PVST+ Spanning Tree Protocol.
IF# Interface port number Number of the interface port whose information is
displayed.
Up The port is in Up status. Indicates that the port is in Up status.
If link aggregation is used, this means that the channel
group is in Up status.