Linksys SGE2000 Cisco Small Business SFE/SGE2xxx Series Managed Switches Admin - Page 266
Checked, Disabled, Blocking, Listening, Learning, Forwarding, Enable Root Guard, Port State, Speed
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Configuring Spanning Tree Defining Spanning Tree 10 - Auto - Enables Port Fast mode a few seconds after the interface becomes active. • Enable Root Guard - Enable the prevention of a devices outside the network core from being assigned the spanning tree root. The possible field values are: - Checked - Enables Root Guard on the selected port or LAG. - Unchecked - Disables Root Guard on the selected port or LAG. This is the default value. • Enable BPDU Guard - Protects the network from invalid configurations. The possible field values are: - Checked - Enables BPDU Guard on the selected port or LAG. - Unchecked - Disables BPDU Guard on the selected port or LAG. This is the default value. • Port State - Displays the current STP state of a port. If enabled, the port state determines what forwarding action is taken on traffic. Possible port states are: - Disabled - Indicates that STP is currently disabled on the port. The port forwards traffic while learning MAC addresses. - Blocking - Indicates that the port is currently blocked and cannot forward traffic or learn MAC addresses. - Listening - Indicates that the port is in Listening mode. The port cannot forward traffic nor can it learn MAC addresses. - Learning - Indicates that the port is in Learning mode. The port cannot forward traffic, however it can learn new MAC addresses. - Forwarding - Indicates that the port is in Forwarding mode. The port can forward traffic and learn new MAC addresses. • Speed - Indicates the speed at which the port is operating. • Path Cost - Defines the port contribution to the root path cost. The path cost is adjusted to a higher or lower value, and is used to forward traffic when a path being rerouted. • Default Path Cost - Defines the default path cost as the Path Cost field setting. The possible field values are: - Checked - Path Cost is the default value. - Unchecked - Path Cost is user-defined. Cisco Small Business SFE/SGE Managed Switches Administration Guide 257