D-Link DGS-3100 SERIES User Manual page 117

DGS-3100 Series Gigabit Stackable Managed Switch User Manual
Field
Edge
Forwarding BPDU
P2P
State
2. Define the Unit, From Port, To Port, Cost, Edge, P2P, and State fields.
3. Click
101
Description
Indicates whether the selected port is an edge port. The possible field values are:
True — Defines the port as an edge port. Edge ports cannot create loops; however, they
can lose edge port status if a topology change creates a potential for a loop. An edge port
normally should not receive BPDU packets. If a BPDU packet is received, it automatically
loses edge port status.
False — Indicates that the port does not have edge port status.
Bridges use Bridge Protocol Data Units (BPDU) to provide spanning tree information. STP
BPDUs filtering is useful when a bridge interconnects two regions; each region needing a
separate spanning tree. BPDU filtering functions only when STP is disabled either globally or
on a single interface. The possible field values are:
Disabled – BPDU filtering is enabled on the port.
Enabled – BPDU forwarding is enabled on the port (if STP is disabled).
Global – BPDU filtering functions according to the device-wide setting (see STP Bridge
Global Settings Page).
Indicates whether the P2P of selected port is enabled. The possible field values are:
True — Indicates a point-to-point (P2P) link, P2P ports transition to a forwarding state
rapidly thus benefiting from RSTP.
False — Indicates that the port cannot have P2P status.
Auto — Allows the port to have P2P status whenever possible and operate as if the P2P
status were true. (A port that operates in full-duplex is assumed to be point-to-point, while
a half-duplex port is considered as a shared port) If the port cannot maintain this status, (for
example if the port is forced to half-duplex operation) the P2P status changes to operate as
if the P2P value were False. The default setting is Auto.
Set to enable or disable STP for the selected group of ports. The default is Enabled. The port
STP State overrides the STP Global State
. The STP Port Settings are defined, and the device is updated.