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C
I
ONSOLE
NTERFACE
Parameter
(Path) Cost
Fast
Forwarding*
* Since end-nodes cannot cause forwarding loops, they can be passed
through the Spanning Tree state changes more quickly than allowed by
standard convergence time. Fast Forwarding can achieve quicker
convergence for end-node workstations and servers, and also overcome
other STA related timeout problems. (Remember that Fast Forwarding
should only be enabled for ports connected to an end-node device.)
2-42
Default
Description
100/19/4
This parameter is used by the STA algorithm 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.)
The default and recommended range is:
Ethernet:
Fast Ethernet: 19 (10~60)
Gigabit Ethernet: 4 (3~10)
The full range is 0 - 65535.
Disabled
This parameter is used to enable/disabled the
Fast Spanning Tree mode for the selected port.
In this mode, ports skip the Blocked, Listening
and Learning states and proceed straight to
Forwarding.
100 (50~600)
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