D-Link DES-6500 - Switch User Manual page 67

Migration
Edge
P2P
State
LBD State
Click Apply to implement changes made.
xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch User Manual
Setting this parameter as "yes" will set the ports to send out BPDU packets to other
bridges, requesting information on their STP setting If the Switch is configured for RSTP,
the port will be capable to migrate from 802.1d STP to 802.1w RSTP. If the Switch is
configured for MSTP, the port is capable of migrating from 802.1d STP to 802.1s MSTP.
RSTP and MSTP can coexist with standard STP, however the benefits of RSTP and MSTP
are not realized on a port where an 802.1d network connects 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.
Choosing the true parameter 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. Choosing the false parameter
indicates that the port does not have edge port status.
Choosing the True parameter 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 True.
This drop-down menu allows you to enable or disable STP for the selected group of ports.
The default is Enabled.
Use the pull-down menu to enable or disable the loop-back detection function on the switch
for the ports configured above. For more information on this function, see the STP
Loopback Detection section.
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