SMC Networks TigerAccess SMC7816M Manuel d'utilisateur télécharger pdf (Page 328)

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• Admin MST Path Cost – This parameter is used by the MSTP 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: 0 for auto-configuration, 1-65535 for the short path cost

method

, 1-200,000,000 for the long path cost method)

By default, the system automatically detects the speed and duplex mode

used on each port, and configures the path cost according to the values

shown below. Path cost “0” is used to indicate auto-configuration mode.

When the short path cost method is selected and the default path cost

recommended by the IEEE 8021w standard exceeds 65,535, the default

is set to 65,535.

The recommended range is listed in Table 12-1 on page 12-19.

The recommended path cost is listed in Table 12-2 on page 12-19.

Default path costs use the IEEE 802.1w-2001 recommendations listed

in Table 12-2 on page 12-19, except when short path cost method is

selected and the recommended value would fall below 65,535 (i.e., the

minimum default setting).

17. Refer to “Configuring Global Settings” on page 12-8 for information on setting the path

cost method.

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SMC Networks TigerAccess SMC7816M Manuel d'utilisateur Page 328

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