D-Link DES-3326SRM Product Manual - Page 75
Parameter, Description, Priority, Migration, Con Ports from __
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D-Link DES-3326S Layer 3 Switch The following fields are configured in the STP Port Settings - Edit menu: Parameter Description Cost Priority Migration Edge P2P Configure Ports from __ to __ A Port Cost can be set from 1 to 200000000. The lower the number, the greater the probability the port will be chosen to forward packets. Default port cost: 100Mbps port = 200000 Gigabit ports = 20000 A Port Priority can be from 0 to 240. The lower the number, the greater the probability the port will be chosen as the Root Port. Select Yes or No. Choosing Yes will enable the port to migrate from 802.1d STP status to 802.1w RSTP status. RSTP can coexist with standard STP, however the benefits of RSTP are not realized on a port where an 802.1d network connects to an 802.1w enabled network. Migration should be enabled (yes) on ports connected to network stations or segments that will be upgraded to 802.1w RSTP on all or some portion of the segment. Select True or False. Choosing 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 the port does not have edge port status. Select True or False. Choosing true indicates a point-to-point (p2p) shared link. These 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 consecutive groups of ports may be configured starting with the selected port. 65