VLAN name or number. If you do not specify a VLAN, MSS displays information for blocked ports on all VLANs.

show spantree backbonefast

Indicates whether the STP backbone fast convergence feature is enabled or disabled.

Syntax: show spantree backbonefast

Defaults: None.

Access: All.

Examples: The following example shows the command output on a switch with backbone fast convergence enabled:

DWS-1008#show spantree backbonefast

Backbonefast is enabled

See Also:

• set spantree backbonefast

show spantree blockedports

Lists information about switch ports that STP has blocked on one or all of its VLANs.

Syntax: show spantree blockedports [vlan vlan-id] vlan vlan-id

Defaults: None.

Access: All.

Usage: The command lists information separately for each VLAN.

Examples: The following command shows information about blocked ports on a switch for the default VLAN (VLAN 1):

DWS-1008#show spantree blockedports vlan default

Port Vlan Port-State Cost Prio Portfast

------------------------------------------------------------------------

6 190 Blocking 4 128 Disabled Number of blocked ports (segments) in VLAN 1 : 1

The port information is the same as the information displayed by the show spantree command.

See Also:

• show spantree

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D-Link dws-1008 manual Show spantree backbonefast, Show spantree blockedports, DWS-1008#show spantree backbonefast