Cisco Cisco SG200-26P 26-port Gigabit PoE Smart Switch Manuale Di Manutenzione
Spanning Tree
Configuring STP Interface Settings
Cisco Small Business SF200E Series Advanced Smart Switch
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Configuring STP Interface Settings
The STP Interface Settings page assigns STP properties to individual ports or
LAGs. These settings are applicable to both the Classic STP and Rapid STP.
LAGs. These settings are applicable to both the Classic STP and Rapid STP.
To edit settings for a port or LAG:
STEP 1
Click Spanning Tree > STP Interface Settings in the navigation window.
The STP Interface Settings Table displays configuration information for each port
and LAG. By default, all ports are enabled for STP operation.
and LAG. By default, all ports are enabled for STP operation.
NOTE:
The list ports/LAGs might span more than one page. Use the Page list to
display the next set of entries.
STEP 2
Select the port or LAG to configure and click Edit.
STEP 3
Enter the parameters:
•
STP—Select to enable STP operation on the port/LAG.
•
Auto Edge—Select Enable to allow the switch to automatically determine if
the port is an edge port or PortFast. A port is an edge port if it is not
connected to a bridge. Auto-detection speeds up the transition of the port to
forwarding state. A port can forward traffic and learn MAC addresses when
it is in forwarding state.
the port is an edge port or PortFast. A port is an edge port if it is not
connected to a bridge. Auto-detection speeds up the transition of the port to
forwarding state. A port can forward traffic and learn MAC addresses when
it is in forwarding state.
•
Edge Port—Select Enable to manually configure the port as an edge port.
•
BPDU Handling—Bridge Protocol Data Units (BPDUs) are the messages
exchanged between switches to calculate STP topology. Select the method
of BPDU packet handling when the spanning tree is disabled on an interface:
exchanged between switches to calculate STP topology. Select the method
of BPDU packet handling when the spanning tree is disabled on an interface:
-
Filtering—Enables the port to discard BPDUs received on interfaces
that are not enabled for STP.
that are not enabled for STP.
-
Flooding—Allows flooding of BPDUs received on non-spanning-tree
ports to all other non-spanning-tree ports.
ports to all other non-spanning-tree ports.
•
Path Cost—Specify the port path cost. The cost of a path to the root bridge
is the sum of the costs of all ports in the path. The path cost is used by CST
and RSTP to forward traffic when a path is being rerouted. Select Use
Default to set the path cost to the port speed. Or select User Defined to set
a custom value between 0 and 200,000,000. A value of zero means the path
cost is set according to the port's speed.
is the sum of the costs of all ports in the path. The path cost is used by CST
and RSTP to forward traffic when a path is being rerouted. Select Use
Default to set the path cost to the port speed. Or select User Defined to set
a custom value between 0 and 200,000,000. A value of zero means the path
cost is set according to the port's speed.