SMC Networks EliteConnect SMCE21011, Руководство пользователя, Страница: 84 / 258

C
HAPTER
8
| Wireless Settings
Spanning Tree Protocol (STP)
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numeric values indicate higher priority.)
(Default:32768; Range: 0-65535)
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Max Age — The maximum time (in seconds) a device can wait without
receiving a configuration message before attempting to reconfigure. All
device ports (except for designated ports) should receive configuration
messages at regular intervals. Any port that ages out STP information
(provided in the last configuration message) becomes the designated
port for the attached LAN. If it is a root port, a new root port is selected
from among the device ports attached to the network.
(Default: 20 seconds; Range: 6-40 seconds)
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Minimum: The higher of 6 or [2 x (Hello Time + 1)].
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Maximum: The lower of 40 or [2 x (Forward Delay - 1)]
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Hello Time — Interval (in seconds) at which the root device transmits
a configuration message. (Default: 2 seconds; Range: 1-10 seconds)
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Minimum: 1
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Maximum: The lower of 10 or [(Max. Message Age / 2) -1]
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Forwarding Delay — The maximum time (in seconds) this device
waits before changing states (i.e., discarding to learning to forwarding).
This delay is required because every device must receive information
about topology changes before it starts to forward frames. In addition,
each port needs time to listen for conflicting information that would
make it return to a discarding state; otherwise, temporary data loops
might result. (Default: 15 seconds; Range: 4-30 seconds)
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Minimum: The higher of 4 or [(Max. Message Age / 2) + 1]
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Maximum: 30
E
THERNET
I
NTERFACE
Sets STP settings for the Ethernet port.
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Link Path Cost — This parameter is used by the STP to determine the
best path between devices. Therefore, lower values should be assigned
to ports attached to faster media, and higher values assigned to ports
with slower media. (Path cost takes precedence over port priority.)
(Default: Ethernet interface: 19; Wireless interface: 40;
Range: 1-65535
◆
Link Port Priority — Defines the priority used for this port in the
Spanning Tree Protocol. If the path cost for all ports on a switch are the
same, the port with the highest priority (i.e., lowest value) will be
configured as an active link in the spanning tree. This makes a port
with higher priority less likely to be blocked if the Spanning Tree
Protocol is detecting network loops. Where more than one port is
assigned the highest priority, the port with lowest numeric identifier will
be enabled. (Default: 128; Range: 0-240, in steps of 16)