show spanning-tree

To display spanning tree information, use the command show spanning-tree in Privileged EXEC Mode. This command executes only if the spanning tree functionality has not been shut down in the switch.

show spanning-tree

show spanning-tree { [active } { [detail] } { [switch } { <default>]] }
{ [blockedports } { [switch } { <default>]] }
{ [bridge } { [{address } { | detail } { | forward-time } { | hello-time } { | id } { | max-age } { | priority } { | protocol } { | switch}] }
{ [detail } { [switch } { <default>]] }
{ [interface } { {Extreme-Ethernet } { <interface-id> } { | gigabitethernet } { <interface-id>} } { [bpduguard] } { [cost] } { [encapsulationtype] } { [inconsistency] } { [layer2-gateway-port] } { [priority] } { [restricted-role] } { [restricted-tcn] } { [rootcost] } { [state] } { [stats]] }
{ [layer2-gateway-port } { [switch } { <default>]] }
{ [mst } { [<instance-id (0-4094)>] } { [configuration } { [switch } { <default>]] } { [detail } { [switch } { <default>]] } { [interface } { {Extreme-Ethernet } { <interface-id> } { | gigabitethernet } { <interface-id>} } { [detail] } { [hello-time] } { [stats]] } { [switch } { <default>]] }
{ [pathcost } { method } { [switch } { <default>]] }
{ [performance-data] } { [interface } { {Extreme-Ethernet } { <interface-id> } { | gigabitethernet } { <interface-id>} } { [instance] } { [<instance-id>] }
{ [root } { [{address } { | cost } { | detail } { | forward-time } { | id } { | max-age } { | port } { | priority } { [system-id } { [switch } { <default>]] } { | switch}] }
{ [summary } { [switch } { <default>]] }
{ [switch } { <default>]] }
{ [vlan } { <vlan-id/vfi_id> } { [active } { [detail] } { [switch } { <default>] } { [blockedports } { [switch } { <default>]] } { [detail } { [switch } { <default>] } { [active } { [switch } { <default>]]] } { [interface } { {Extreme-Ethernet } { <interface-id> } { | gigabitethernet } { <interface-id>} } { [active] } { [cost] } { [detail] } { [priority] } { [rootcost] } { [state] } { [stats]] } { [pathcost } { method } { [switch } { <default>]] } { [root } { [{address } { | cost } { | detail } { | forward-time } { | id } { | max-age } { | port } { | priority } { | switch}] } { [summary } { [switch } { <default>]] } { [switch } { <default>]] }

Parameters

Parameter Type Description
active   Enter to display the spanning tree information of active ports.
detail   Enter to display the detailed spanning tree related information of the switch and all ports enabled in the switch. The information contains status of spanning tree operation, current selected spanning mode, current spanning tree compatibility version, bridge and root priority, bridge and root addresses, port path cost, port priority, port timers, bridge and port level spanning tree statistics information, transmit hold-count value, link-type, and status of L2GP, loop guard, BPDU receive, BPDU transmit, restricted TCN, restricted role and portfast features.
switch   Enter to display the switch name/context name.
default   Enter default to display the default switch.
blockedports   Enter to display the summary of port states.
switch   Enter to display the switch name/context name.
default   Enter default to display the default switch.
bridge   Enter to display the he spanning tree bridge information. The information contain bridge ID, hello time, maximum age time, forward delay time and protocol enabled, for the RSTP. The information also contains the instance ID for MST.
address   Enter to display the MAC address of the bridge.
detail   Enter to display the priority, address, maximum age time and forward delay time for the bridge.
forward-time   Enter to display the forward time of the bridge.
hello-time   Enter to display the hello time of the bridge.
id   Enter to display the ID of the bridge.
max-age   Enter to display the maximum age time of the bridge.
priority   Enter to display the priority of the bridge.
protocol   Enter to display the protocol currently enabled in the bridge.
switch   Enter to display the switch related information.
interface   Enter to display the interface-specific information of active ports.
Gigabitethernet   Enter to display gigabitetethernet type of interface. Gigabitethernet is a version of LAN standard architecture that supports data transfer up to 1 Gigabit per second.
<interface-id>   Enter to display a specific slot number / port number. The format is <0>/<1-28> without spaces between Slot Number/Port Number. For example, 0/1.
Extreme-Ethernet   Enter to display the Extreme-Ethernet type of interface. Extreme Ethernet is a version of Ethernet that supports data transfer up to 10 Gigabits per second and only full duplex links.
<interface-id>   Enter to display a specific slot number / port number. The format is <0>/<1-28> without spaces between Slot Number/Port Number. For example, 0/1.
bpduguard   Enter to display the spanning tree BPDU guard for RSTP and MSTP.
cost   Enter to display the summary of port states.
detail   Enter to display the detailed information about the port and bridge port cost.
encapsulationtype   Enter to display the spanning tree encapsulation type.
inconsistency   Enter to display the Spanning-tree inconsistent state for RSTP, MSTP and PVRST.
layer2-gateway-port   Enter to display the spanning tree layer two gateway port specific configuration.
portfast   Enter to display the spanning tree portfast state.
priority   Enter to display the spanning tree port priority.
restricted-role   Enter to display the spanning-tree restricted role.
restricted-tcn   Enter to display the spanning-tree restricted topology change.
rootcost   Enter to display the spanning tree rootcost (pathcost to reachthe root) value.
state   Enter to display the spanning tree state.
stats   Enter to display the input and output packets by switching path for the interface.
layer2-gateway-port   Enter to display the spanning tree layer two gateway port specific configuration.
switch   Enter to display the switch name/context name.
default   Enter default to display the default switch.
mst   Enter to display the MST instance related information.
<instance-id (0-4094)>   Enter a value for the multiple spanning tree port specific information for the specified MSTI. This value ranges from 1 to 64. The special value 4094 can be used only in the switch that supports PBB-TE. This special value represents PTETID that identifies VID used by ESPs. display the MST instance related information.
configuration   Enter to display the multiple spanning tree instance related information. This information contains the MST region name, MST region revision, and a list containing MSTI IDs and VLAN IDs mapped to the corresponding MSTI.
switch   Enter to display the switch name/context name.
default   Enter default to display the default switch.
detail   Enter to display the spanning tree information of active ports.
switch   Enter to display the switch name/context name.
default   Enter default to display the default switch.
interface   Enter to display the spanning tree information of active ports.
Gigabitethernet   Enter to display gigabitetethernet type of interface. Gigabitethernet is a version of LAN standard architecture that supports data transfer up to 1 Gigabit per second.
<interface-id>   Enter to display a specific slot number / port number. The format is <0>/<1-28> without spaces between Slot Number/Port Number. For example, 0/1.
Extreme-Ethernet   Enter to display the Extreme-Ethernet type of interface. Extreme Ethernet is a version of Ethernet that supports data transfer up to 10 Gigabits per second and only full duplex links
<interface-id>   Enter to display a specific slot number / port number. The format is <0>/<1-28> without spaces between Slot Number/Port Number. For example, 0/1.
detail   Enter to display the detailed multiple spanning tree port specific information for the specified interface. The information contain port priority, port cost, root address, priority and cost, IST address, priority and cost, bridge address, priority and cost, forward delay, maximum age, maximum hop count, and BPDUs sent and received.
hello-time   Enter to display the hello time of the MSTIs assigned to the specified interface.
stats   Enter to display the number of BPDUs sent and received for the MSTIs assigned to the specified interface.
switch   Enter to display the switch name/context name.
default   Enter default to display the default switch.
pathcost   Enter to display the port pathcost method configured for the switch.
method   Enter to display the port pathcost method configured for the switch.
performance-data   Enter to display the spanning tree information of active ports.
interface   Enter to display the spanning-tree performance related information for the specified type of interface.
Gigabitethernet   Enter to display gigabitetethernet type of interface. Gigabitethernet is a version of LAN standard architecture that supports data transfer up to 1 Gigabit per second.
<interface-id>   Enter to display a specific slot number / port number. The format is <0>/<1-28> without spaces between Slot Number/Port Number. For example, 0/1.
Extreme-Ethernet   Enter to display the Extreme-Ethernet type of interface. Extreme Ethernet is a version of Ethernet that supports data transfer up to 10 Gigabits per second and only full duplex links
<interface-id>   Enter to display a specific slot number / port number. The format is <0>/<1-28> without spaces between Slot Number/Port Number. For example, 0/1.
instance   Enter to display spanning-tree performance data for the specified MST Instance ID.
root   Enter to display the spanning-tree root information.
Note:

This configuration is not supported in PVRST Mode.
address   Enter to display the MAC address of the bridge.
cost   Enter to display the cost of the root bridge.
detail   Enter to display detailed information for the port and bridge.
forward-time   Enter to display the forward time of the root bridge.
hello-time   Enter to display the hello time of the root bridge.
id   Enter to display the ID of the root bridge.
max-age   Enter to display the maximum age time of the root bridge.
port   Enter to display the root port.
priority   Enter to display the priority of the root bridge.
switch   Enter to display the switch related information.
summary   Enter to display the spanning tree information of active ports.
switch   Enter to display the switch related information.
vlan   Enter to display the interface specific PVRST information for the specified VLAN.
<vlan-id/vfi_id>   Enter a number for VLAN / VFI ID.
  • <vlan –id> - VLAN ID is a unique value that represents the specific VLAN. This value ranges from 1 to 4094
  • VFI ID is a VLAN created in the system which contains Pseudo wires and Attachment Circuits as member ports. This creates a logical LAN for the VPLS service. This value ranges from 4096 to 65535
Note:

The VLAN ID 4095 is reserved and may be used to indicate a wildcard match for the VID in management operations or Filtering Database entries.

Note:

VFI IDs 4096 and 4097 are reserved identifiers used in MPLS PW.
active   Enter to display the PVRST related information for the specified active VLAN ID.
detail   Enter to display the detailed PVRST related information for the specified active VLAN ID. The information contains current selected spanning Mode, current spanning tree compatibility version, bridge and root priority, bridge and root addresses, port path cost, port priority, timer values, bridge and port level spanning tree statistics information, and transmit hold-count value.
switch   Enter to display the PVRST related information for the switch name/context name.
default   Enter default to display the PVRST related information for the default switch.
blockedports   Enter to display the list of ports in blocked state and the total number of blocked ports for the specified VLAN.
switch   Enter to display the PVRST related information for the switch name/context name.
default   Enter default to display the PVRST related information for the default VLAN.
active   Enter to display the PVRST related information for the specified active VLAN ID.
switch   Enter to display the PVRST related information for the switch name/context name.
default   Enter default to display the PVRST related information for the default switch.
interface   Enter to display interface specific PVRST related information for the specified type of interface
Gigabitethernet   Enter to display gigabitetethernet type of interface. Gigabitethernet is a version of LAN standard architecture that supports data transfer up to 1 Gigabit per second.
<interface-id>   Enter to display a specific slot number / port number. The format is <0>/<1-28> without spaces between Slot Number/Port Number. For example, 0/1.
Extreme-Ethernet   Enter to display the Extreme-Ethernet type of interface. Extreme Ethernet is a version of Ethernet that supports data transfer up to 10 Gigabits per second and only full duplex links.
<interface-id>   Enter to display a specific slot number / port number. The format is <0>/<1-28> without spaces between Slot Number/Port Number. For example, 0/1.
active   Enter to display the detailed PVRST related information for the specified active VLAN ID.
cost   Enter to display the cost of the specified port.
detail   Enter to display the detailed interface specific PVRST related information for the port.
priority   Enter to display the priority of the specified port.
rootcost   Enter to display the root cost of the port. The root cost defines the pathcost to reach the root bridge.
state   Enter to display the state of the port.
stats   Enter to display the port level spanning tree statistics information.
pathcost   Enter to display the port pathcost method configured for the specified VLAN.
method   Enter to display the port pathcost method configured for the specified VLAN.
switch   Enter to display the PVRST related information for the switch name/context name
default   Enter default to display the PVRST related information for the default switch.
root   Enter to display the spanning-tree root information.
Note:

This configuration is not supported in PVRST Mode.
address   Enter to display the MAC address of the root.
cost   Enter to display the cost of the root.
detail   Enter to display detailed PVRST related information for the root. This information contain root priority, root address, root cost, root port, hello time, maximum age and forward delay.
forward-time   Enter to display the forward time of the root.
hello-time   Enter to display the hello time of the root.
id   Enter to display the ID of the root.
max-age   Enter to display the maximum age time of the root.
port   Enter to display the root.
priority   Enter to display the priority of the root bridge.
system-id   Enter to display the Bridge system ID.
switch   Enter to display the switch related information.
default   Enter default to display the PVRST related information for the default VLAN.
summary   Enter to display the summary of port states
switch   Enter to display the switch related information.
default   Enter default to display the PVRST related information for the default VLAN.

Mode

Privileged EXEC Mode

Examples

iS5Comm # show spanning-tree

-------------------------------------------------------------------
Spanning-tree for VLAN 1

We are the root of the Spanning Tree
Root Id         Priority   32769
Address    e8:e8:75:90:0b:01
Cost       0
Port       0
Hello Time 2 sec 0 cs, Max Age 20 sec 0 cs, Forward Delay 15 sec 0 cs

Spanning Tree Enabled Protocol PVRST
Bridge Id       Priority 32769
Address e8:e8:75:90:0b:01
Hello Time 2 sec 0 cs, Max Age 20 sec 0 cs, Forward Delay 15 sec 0 cs
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name     Role         State        Cost     Prio   Type
----     ----         -----        ----     ----   ------
Gi0/11   Designated   Forwarding   20000    128    P2P
Ex0/2    Designated   Forwarding   2000     128    P2P

iS5Comm# show spanning-tree active detail switch default

Spanning-tree for VLAN 1

Bridge is executing the rstp compatible PVRST Protocol
Bridge Identifier has priority 32769, Address e8:e8:75:90:0b:01
Configured Hello time 2 sec 0 cs, Max Age 20 sec 0 cs, Forward Delay 15 sec 0 cs

Dynamic Path Cost is Disabled
We are the root of the spanning tree
Number of Topology Changes 0
Time since topology Change 0 seconds ago
Transmit Hold-Count 6
Root Times: Max Age 20 sec 0 cs, Forward Delay 15 sec 0 cs, Hello Time 2 sec 0 cs

Port 11 [Gi0/11] of VLAN 1 is Designated, Forwarding
Port PathCost 20000    , Port Priority 128      , Port Identifier  128.11
Designated Root has priority 32769, address e8:e8:75:90:0b:01
Designated Bridge has priority 32769, address e8:e8:75:90:0b:01
Designated Port Id is 128.11, Designated PathCost 0
Timers: Hello Time - 2 sec 0 cs, MaxAge - 20 sec 0 cs,
Forward Delay - 15 sec 0 cs, Hold - 1 sec 0 cs
No of Transitions to forwarding State :3
BPDUs : sent 2755 , received 0
Bpdu Guard  is None
Root Guard  is Disabled
BPDU filter is Disabled

Port 26 [Ex0/2] of VLAN 1 is Designated, Forwarding
Port PathCost 2000     , Port Priority 128      , Port Identifier  128.26
Designated Root has priority 32769, address e8:e8:75:90:0b:01
Designated Bridge has priority 32769, address e8:e8:75:90:0b:01
Designated Port Id is 128.26, Designated PathCost 0
Timers: Hello Time - 2 sec 0 cs, MaxAge - 20 sec 0 cs,
Forward Delay - 15 sec 0 cs, Hold - 1 sec 0 cs
No of Transitions to forwarding State :1
BPDUs : sent 2758 , received 0
Bpdu Guard  is None
Root Guard  is Disabled
BPDU filter is Disabled

iS5Comm# show spanning-tree blockedports switch default

% Blocked Ports can be retrieved per VLAN basis in PVRST

iS5Comm# show spanning-tree bridge address

Bridge Address is e8:e8:75:90:2e:01

iS5Comm# show spanning-tree bridge forward-time

Bridge Forward delay is  15 sec

iS5Comm# show spanning-tree bridge

Bridge ID                  HelloTime  MaxAge       FwdDly         Protocol
---------                  ---------  ------       ------ --------
80:00:e8:e8:75:90:2e:01    02s 00cs   20s 00cs     15 s 0  cs     rstp

iS5Comm# show spanning-tree bridge hello-time

Bridge Hello Time is 2 sec 0 cs

iS5Comm# show spanning-tree bridge id

Bridge ID is 80:00:e8:e8:75:90:2e:01

iS5Comm# show spanning-tree bridge max-age

Bridge Max Age is 20 sec 0 cs

iS5Comm# show spanning-tree bridge protocol

Bridge Protocol Running is RSTP

iS5Comm# show spanning-tree bridge priority

Bridge Priority is 32768

iS5Comm# show spanning-tree bridge detail

Bridge Id       Priority 32768,
Address e8:e8:75:90:2e:01
Hello Time 2sec 0cs, 
Max Age 20sec 0cs, 
Forward Delay 15 sec 0 cs

iS5Comm# show spanning-tree detail

spanning-tree portfast bpduguard disable
Forward delay optimization alternate-role Enabled
Spanning tree Protocol Enabled.
Bridge is executing the STP compatible Rapid Spanning Tree Protocol
Bridge Identifier has priority 32768, Address e8:e8:75:90:0b:01
Configured Hello time 2 sec 0 cs, Max Age 20 sec 0 cs,
Forward Delay 30 sec 0 cs
Dynamic Path Cost Enabled
Flush Interval 0 centi-sec, Flush Invocations 35
Flush Indication threshold 0
We are the root of the spanning tree
Number of Topology Changes 1
Time since topology Change 4250 seconds ago
Transmit Hold-Count 6
Root Times: Max Age 20 sec 0 cs  Forward Delay 30 sec 0 cs
Hello Time 2 sec 0 cs
Port 10 [Gi0/10] is Designated, Forwarding
Port PathCost 20000, Port Priority 128, Port Identifier  128.10
Designated Root has priority 32768, address e8:e8:75:90:0b:01
Designated Bridge has priority 32768, address e8:e8:75:90:0b:01
Designated Port Id is 128.10, Designated PathCost 0
No of Transitions to forwarding State :32
Auto-Edge is enabled
PortFast is disabled, Oper-Edge is disabled
LinkType is point to Point
BPDUs : sent 67637 , received 0
Timers: Hello - 1, Forward Delay - 0, Topology Change - 0,
Error Disable Recovery Interval 300 sec 0 cs
Restricted Role is disabled.
Restricted TCN is disabled.
bpdu-transmit enabled
bpdu-receive enabled
Root Guard is disabled.
Loop Guard is disabled.
Dot1W mode disabled.

show spanning-tree interface gigabitethernet 0/1 bpduguard

Bpdu Guard  is None

iS5Comm# show spanning-tree interface gigabitethernet 0/1 layer2-gateway-port switch default

Switch default
Port Gi0/1 PseudoRootId
Instance      Priority         MacAddress         State
----------    ----------   -------------------  ----------
MST00          4096        00:00:11:22:33:44   Forwarding
MST01          8192        00:00:12:34:45:55   Forwarding
MST02          4096        00:00:12:34:45:5a   Forwarding

iS5Comm# show spanning-tree mst 1

## MST01
Vlans mapped:    2
Bridge     Address e8:e8:75:90:0b:01    Priority 32768
Root       Address e8:e8:75:90:0b:01    Priority 32768
Root       this switch for MST01
Interface Role         Sts          Cost     Prio.Nbr Type
--------- ----         ---          ----     -------- ----

iS5Comm# show spanning-tree mst configuration

Name            [regionone]
Revision        100
Max-Instance    1
Instance        Vlans mapped
--------      ------------------------------------------
0              1,3-1024,1025-2048,2049-3072,
 3073-4094
1              2
-------------------------------------------------------

iS5Comm# show spanning-tree mst 1 interface gigabitethernet 0/1

Switch default
Gi0/1 of MST00 is Disabled  , Discarding
Edge port: no
Link type: Shared
Port Hello Timer: 2 sec 0 cs
Bpdus sent 0 , Received 0
Instance  Role         Sts          Cost     Prio.Nbr
--------  ----         ---          ----     --------
0         Disabled     Discarding   200000   128.1

iS5Comm# show spanning-tree mst 1 interface gigabitethernet 0/1 stats

MST01     Bpdus sent 2, Received 0

iS5Comm# show spanning-tree mst 1 interface gigabitethernet 0/1 hello-time

MST01     2 secs 0 cs

iS5Comm# show spanning-tree mst 1 interface gigabitethernet 0/1 detail

Gi0/1 of MST01 is Master    , Forwarding
Port info     port id 128.1       priority 128   cost 200000
Designated root  address 00:01:02:03:04:11     priority 32768 cost 0
Designated bridge address 00:01:02:03:04:11     priority 32768 port id 128.1

iS5Comm# show spanning-tree performance-data

 STP Performance data
=====================
Received Event Time Stamp(In millisecs)        : 0
Port State Change Time Stamp(In millisecs)     : 527555293

iS5Comm# show spanning-tree performance-data int gi 0/1

STP Performance data at Port 1
================================
Rcvd Event Time Stamp(In millisecs)                 : 0
Rcvd Event                                          : PORT_DOWN
Rcvd State Change Time Stamp(In millisecs)          : 527552273

iS5Comm# show spanning-tree root

Root ID                  RootCost MaxAge         FwdDly         RootPort
-------                  -------- ------         ------         --------
80:00:e8:e8:75:90:0b:01  0        20sec 00cs     30sec 00cs     0

iS5Comm# show spanning-tree root address

Root Bridge Address is e8:e8:75:90:0b:01

iS5Comm# show spanning-tree root cost

Root Cost is 0

iS5Comm# show spanning-tree root forward-time

Root Bridge Id is 80:00:e8:e8:75:90:0b:01

iS5Comm# show spanning-tree root max-age

Root MaxAge is 20 secs 0 cs

iS5Comm# show spanning-tree root port

Root Port is 0

iS5Comm# show spanning-tree root priority

Root Priority is 32768

iS5Comm# show spanning-tree root detail

We are the root of the Spanning Tree
Root Id         Priority   32768
Address    e8:e8:75:90:0b:01
Cost       0
Port       0
Max Age 20 sec 0 cs, Forward Delay 30 sec 0 cs
Hello Time 2 sec 0 cs

iS5Comm# show spanning-tree root switch default

Root ID                  RootCost MaxAge         FwdDly         RootPort
-------                  -------- ------         ------         --------
80:00:e8:e8:75:90:0b:01  0        20sec 00cs     30sec 00cs     0

iS5Comm# show spanning-tree blockedports

Blocked Interfaces List:
Gi0/1,Gi0/2,Gi0/3,Gi0/4,Gi0/5,Gi0/6,Gi0/7,Gi0/8,Gi0/9,Gi0/11,Gi0/12,Gi0/13,Gi0/14,Gi0/15,Gi0/16,Gi0/17,Gi0/18,Gi0/19,Gi0/20,Gi0/21,Gi0/22,Gi0/23,Gi0/24,Ex0/1,Ex0/2,Ex0/3,Ex0/4,po1,po2,
The Number of Blocked Ports in the system is :29

iS5Comm# show spanning-tree pathcost method

Spanning Tree port pathcost method is Long

iS5Comm# show spanning-tree summary

Spanning tree enabled protocol is RSTPSpanning Tree port pathcost method is Long
RSTP Port Roles and States
Port-Index        Port-Role    Port-State   Port-Status
----------        ---------    ----------   -----------
Gi0/1             Disabled     Discarding   Enabled
Gi0/2             Disabled     Discarding   Enabled
Gi0/3             Disabled     Discarding   Enabled
Gi0/4             Disabled     Discarding   Enabled
Gi0/5             Disabled     Discarding   Enabled
Gi0/6             Disabled     Discarding   Enabled
Gi0/7             Disabled     Discarding   Enabled
Gi0/8             Disabled     Discarding   Enabled
Gi0/9             Disabled     Discarding   Enabled
Gi0/10            Designated   Forwarding   Enabled
Gi0/11            Disabled     Discarding   Enabled
Gi0/12            Disabled     Discarding   Enabled
Gi0/13            Disabled     Discarding   Enabled
Gi0/14            Disabled     Discarding   Enabled
Gi0/15            Disabled     Discarding   Enabled
Gi0/16            Disabled     Discarding   Enabled
Gi0/17            Disabled     Discarding   Enabled
Gi0/18            Disabled     Discarding   Enabled
Gi0/19            Disabled     Discarding   Enabled
Gi0/20            Disabled     Discarding   Enabled
Gi0/21            Disabled     Discarding   Enabled
Gi0/22            Disabled     Discarding   Enabled
Gi0/23            Disabled     Discarding   Enabled
Gi0/24            Disabled     Discarding   Enabled
Ex0/1             Disabled     Discarding   Enabled
Ex0/2             Disabled     Discarding   Enabled
Ex0/3             Disabled     Discarding   Enabled
Ex0/4             Disabled     Discarding   Enabled

iS5Comm# show spanning-tree vlan 1 blockedports switch default

Switch default
Blocked Interfaces List:
The Number of Blocked Ports in the system is :0

iS5Comm# show spanning-tree vlan 1 pathcost-method switch default

Switch default
Spanning Tree port pathcost method is Long
iS5Comm# show spanning-tree vlan 1 summary switch default
Switch default
Spanning tree enabled protocol is PVRST
Spanning-tree pathcost method is long
PVRST Port Roles and States
Port-Index  Port-Role    Port-State   Port-Status
----------  ---------    ----------   -----------
1           Designated   Discarding   Enabled
2           Designated   Forwarding   Enabled

iS5Comm# show spanning-tree vlan 1

Spanning-tree for VLAN 1
We are the root of the Spanning Tree
Root Id         Priority   32769
Address    e8:e8:75:90:0b:01
Cost       0
Port       0
Hello Time 2 sec 0 cs, Max Age 20 sec 0 cs, Forward Delay 15 secn0 cs
Spanning Tree Enabled Protocol PVRST
Bridge Id       Priority 32769
Address e8:e8:75:90:0b:01
Hello Time 2 sec 0 cs, Max Age 20 sec 0 cs, Forward Delay 15 sec 0 cs
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name     Role         State        Cost     Prio   Type
----     ----         -----        ----     ----   ------
Gi0/11   Designated   Forwarding   20000    128    P2P
Ex0/2    Designated   Forwarding   2000     128    P2P

iS5Comm# show spanning-tree vlan 1 bridge

Bridge ID                HelloTime MaxAge FwdDly Protocol
---------                --------- ------ ------ --------
80:00:00:01:02:03:04:01  2 sec 0 cs 20 sec 0 cs 15 sec 0  cs Pvrst
Parent topic: STP