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Catalyst 6500 Series Switch Command Reference—Release8.4
OL-6244-01
Chapter2 Catalyst 6500 Series Switch and ROM Monitor Commands
show spantree guard
show spantree guard
To display spanning tree guard information for the VLANs or instances on a port, use the show spantree
guard command.
show spantree guard [vlan]
show spantree guard [mod/port]
show spantree guard mistp-instance [instance]
show spantree guard mistp-instance [mod/port]
show spantree guard mst [instance]
show spantree guard mst [mod/port]
Syntax Description
Defaults The default is VLAN 1, and the default port list is “all the ports” in the specified or default VLAN.
Command Types Switch command.
Command Modes Normal.
Usage Guidelines When you enable the spanning tree root guard or loop guard feature, the command works on a per-port
basis. When you enable the feature on a port, a logical port is blocked on a per-VLAN basis. This means
that you can specify a port (or a list of ports) and specify a VLAN, but you cannot specify both.
vlan (Optional) Number of the VLAN; valid values are from 1 to 4094.
mod/port (Optional) Number of the module and the port on the module.
mistp-instance
instance Keyword and optional variable to display MISTP instance-specific
information; valid values are from 1 to 16.
mst instance Keyword and optional variable to display MST instance-specific information;
valid values are from 0 to 15.