D-Link DES-1228 Reference Manual page 85

config stp ports
Restrictions
DES-1228/ME Layer 2 Metro Ethernet Switch CLI Reference Manual
to an 802.1w or 802.1s enabled network. Migration should be set as yes on ports
connected to network stations or segments that are capable of being upgraded to 802.1w
RSTP or 802.1s MSTP on all or some portion of the segment.
edge [true | false | auto] – true designates the port as an edge port. Edge ports cannot
create loops, however an edge port 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.
p2p [true | false | auto] – true indicates a point-to-point (P2P) shared link. P2P ports are
similar to edge ports however they are restricted in that a P2P port must operate in full-
duplex. Like edge ports, P2P ports transition to a forwarding state rapidly thus benefiting
from RSTP. A p2p value of 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. 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 for this parameter is auto.
state [enable | disable] − Allows STP to be enabled or disabled for the ports specified in
the port list. The default is enable.
restricted_role − To decide if this is to be selected as the Root Port. The default value is
false.
restricted_tcn − To decide if this port is to propagate topology change. The default value is
false.
lbd [enable | disable] − Used to enable or disable the loop-back detection function on the
switch for the ports configured above in the config stp command.
fbpdu [enable | disable] − When enabled, this allows the forwarding of STP BPDU packets
from other network devices when STP is disabled in the specified ports. If users want to
enable Forwarding BPDU on a per port basis, the following settings must first be in effect:
1. STP must be globally disabled and 2. Forwarding BPDU must be globally enabled. To
globally disable STP, use the disable stp command, to globally enable fbpdu, use the
config stp command. The default is enable.
Only Administrator-level users can issue this command.
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