D-Link DES-3226L, Руководство пользователя

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DES-3226L Layer 2 Fast Ethernet Switch User’s Guide
The STP port settings that can be configured are:
Parameter Description
Port Number of port being configured.
State Toggle between Enabled and Disabled . When STP is enabled, a change from
link-down to link-up will trigger the Spanning Tree Protocol. STP will set the port to
the listening state. After the forward delay, STP will set the port to the learning
state. After another forward delay, STP will set the port to the forwarding state. If
the forward delay is 15 seconds, the port will take 30 seconds to forward packets.
However, when Fast STP is
Enabled on a port, the port will only take 15 seconds
from link-up to the time it starts forwarding packets. This is because enabling the
Fast STP option will skip the learning state, jumping directly to the forwarding
state from the listening state.
Cost (1-
200000000) 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.
Priority (0-240) A Port Priority can be from 0 to 255 . The lower the number, the greater the
probability the port will be chosen as the Root Port.
Edge 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.
P2P Select True , False, or Auto . 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. The
Auto setting instructs the switch to
force a connection to a non-P2P port when it detects 1 or more BPDUs.
Migrate 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
Configure Ports
from 1 to A consecutive group of ports may be configured starting with the selected port.
To configure
Spanning Tree Protocol functions for individual ports, enter the desired
information in the fields on this window (see the descriptions below for assistance) and then
click
Apply .
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