Distributed Spanning Tree Commands
page 16-136 OmniSwitch 6250 CLI Reference Guide November 2009
show spantree ports
Displays Spanning Tree port information for the flat mode Common and Internal Spanning Tree (CIST)
instance or a 1x1 mode VLAN instance.
show spantree [instance] ports [forwarding | blocking | active | configured]
Syntax Definitions
instance The CIST instance or an existing VLAN ID number (1–4094).
forwarding Displays Spanning Tree operational port parameters for ports that are
forwarding for the specified instance.
blocking Displays Spanning Tree operational port parameters for ports that are
blocked for the specified instance.
active Displays a list of active ports associated with the specified instance.
configured Displays Spanning Tree administrative port parameters for all ports
associated with the specified instance. Note that this parameter is only
available if an instance value is specified with this command.
Defaults
Platforms Supported
OmniSwitch 6250
Usage Guidelines
• If an instance number is not specified, this command displays the Spanning Tree operational status,
path cost, and role for all ports and their associated instances.
• Specifying an instance number with this command when the switch is running the 1x1 Spanning Tree
operating mode implies a VLAN ID and displays Spanning Tree port information for the associated
VLAN instance.
• If the switch is running in the flat mode and STP (802.1D) or RSTP (802.1W) is the active protocol,
enter 1 to specify the CIST instance. If MSTP is the active protocol, however, entering 1 for the
instance number is not accepted. In this case, use the show spantree cist ports or show spantree msti
ports commands instead.
• The configured keyword is only available when an instance number is specified with this command. In
addition, this keyword cannot be used in combination with either the forwarding or blocking
keywords.
parameter default
instance all instances
forwarding | blocking | active |
configured
all ports
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