stp-port-show

This command is used to display the configuration for Bridge Protocol Data Unit (BPDU) processing by one or more ports on a switch.

Syntax   stp-port-show

port port-list

Specify the switch network data port number, list of ports, or a range of ports. The range must be a port number between 1 to 64.

block off|on

Specify if the port blocks BPDUs.

filter off|on

Specify if the port filters BPDUs.

port-fast|
no-port-fast

Specify if the port is enabled for PortFast. PortFast allows a port to enter the forwarding state almost immediately by dramatically decreasing the time of the listening and learning states.

edge|no-edge

Specify if the port is an Edge port. The port can transition directly to a forwarding state but lose Edge port status as soon as any BPDU packets are received.

bpdu-guard|no-bpdu-guard

Specify if BPDU guard is on or off.

root-guard|no-root-guard

Specify if root guard is on or off.

priority integer

Specify the STP port priority as a value between 0 and 240. The default value is 128.

cost number

Specify the cost as a number between 1 and 200000000. The default value is 2000.

Formatting Options

format fields-to-display

Display output using a specific parameter. Use all to display all possible output.

parsable-delim character

Display output formatted for machine parsing using a specified delimiter.

sort-asc

Display output in ascending order.

sort-desc

Display output in descending order.

show dups

Display duplicate entries in the output.

layout vertical|horizontal

Format the output in a vertical or horizontal layout.

show-interval seconds-interval

Repeat the show command at a specified interval.

show-headers|
no-show-headers

Display column headers or not.

limit-output number

Limit the display output to a specific number of entries.

count-output

Display the number of entries in the output. This is useful with vRouter show commands.

unscaled

Display full values in the output instead of scaled approximate values.

raw-int-values

Display integer values instead of mapped values

sum-by

Aggregate output by specific parameters. If sum-by fields are specified, records that have the same value in sum-by fields are combined and displayed as one aggregate record. NOTE: This option is only available for show commands that collect statistics such as connection-stats-show.

Defaults   None.

Access   CLI

History   

Version 1.2

Command introduced.

Version 2.2

The parameter edge|no-edge added to support RSTP. The parameter, guard|no-guard, added.

Version 2.3

The parameter, cost, added.

Version 2.4.1

The parameter, priority, added.

Version 2.6.0

The parameter, guard, changed to bpdu-guard, and a new parameter, root-guard, added.

Usage   STP is a standard inter-switch protocol is used to ensure that an ad hoc network topology is loop-free at Layer 2, on a per VLAN basis. If your network connections form loops, and STP is disabled, packets recirculate between the switches and causes a decrease in network performance. If you are certain that your network is loop-free, you do not need to enable STP.  

Examples  To display configuration information, use the following command:

CLI network-admin@switch > stp-port-show port 17

switch: pubdev01

port:   55

block:  off

filter: off

edge:   yes

guard:  no

switch: pubdev01

port:   65

block:  off

filter: off

guard:  no

switch: pubdev01

port:   66

block:  off

filter: off

guard:  no

 

See Also   

stp-modify

stp-show

stp-port-modify

stp-state-show