Dell PowerConnect 3248 Handmatig - Pagina 32
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Addendum to the 32 48 and 5 224 User 's Guides
–
Forwarding — Port forwards packets, and continues learning
addresses.
•
Designated Cost — The cost for a packet to travel from this port to
the root in the current Spanning Tree configuration. The slower the
media, the higher the cost.
•
Designated Bridge — The priority and MAC address of the device
through which this port must communicate to reach the root of the
Spanning Tree.
•
Designated Port — The priority and number of the port on the
designated bridging device through which this switch must
communicate with the root of the Spanning Tree.
•
Trunk — Indicates whether the port is configured as a trunk member
The Port Settings page also contains the following fields that can be edited:
•
Priority — Defines the priority used for this port in the Spanning Tree
Protocol. If the path cost for all ports on a switch is the same, the port
with the highest priority (such as, lowest value) is 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 is enabled.
(Range: 0-240, in steps of 16; Default: 128.)
•
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.
–
Range —
Ethernet: 200,000-20,000,000
Fast Ethernet: 20,000-2,000,000
Gigabit Ethernet: 2,000-200,000
–
Defaults —
Ethernet — half duplex: 2,000,000; full duplex: 1,000,000; trunk:
500,000
Fast Ethernet — half duplex: 200,000; full duplex: 100,000; trunk:
50,000
Gigabit Ethernet — full duplex: 10,000; trunk: 5,000
NOTICE: When the Path Cost Method is set to short, the maximum path cost
is 65,535.