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Chapter 4: Web configuration
NS3562-8P-2S User Manual
107
STP port setting
This page permits the user to inspect and change the current per port STP settings.
The page includes the following fields:
Object
Description
Port Select
Select a port number from this drop-down menu.
External Cost (0 = Auto)
Controls the path cost incurred by the port.
The Auto setting sets the path cost as appropriate by the physical link
speed using the 802.1D recommended values. Using the Specific
setting, a user-defined value can be entered.
The path cost is used when establishing the active topology of the
network. Lower path cost ports are chosen as forwarding ports in
favor of higher path cost ports. Valid values are in the range 1 to
200000000.
Edge Port
Determines if the operEdge flag should start as being set or cleared.
(The initial operEdge state when a port is initialized).
BPDU Filter
Determines if a port explicitly configured as Edge will transmit and
receive BPDUs.
BPDU Guard
Determines if a port explicitly configured as Edge will disable itself
upon reception of a BPDU.
The port will enter the error-disabled state, and will be removed from
the active topology.
P2P MAC
Determines if the port connects to a point-to-point LAN rather than a
shared medium.
This can be automatically determined, or forced either true or false.
Transition to the forwarding state is faster for point-to-point LANs than
for shared media.
(This applies to physical ports only. Aggregations are always forced
Point2Point).
Migrate
If at any time the switch detects STP BPDUs, including Configuration
or Topology Change Notification BPDUs, it will automatically set the
selected interface to forced STP-compatible mode.
However, you can also use the Protocol Migration button to manually
re-check the appropriate BPDU format (RSTP or STP-compatible) to
send on the selected interfaces.
(Default: Disabled)
Buttons
• Click
Apply
to apply changes.