User’s Manual of GS-5220 LCD Series
240
Buttons
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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.
Port Type IEEE 802.1D-1998 IEEE 802.1w-2001
Ethernet 50-600 200,000-20,000,000
Fast Ethernet 10-60 20,000-2,000,000
Gigabit Ethernet 3-10 2,000-200,000
Table 4-7-1: Recommended STP Path Cost Range
Port Type Link Type IEEE 802.1D-1998 IEEE 802.1w-2001
Ethernet
Half Duplex
Full Duplex
Trunk
100
95
90
2,000,000
1,999,999
1,000,000
Fast Ethernet
Half Duplex
Full Duplex
Trunk
19
18
15
200,000
100,000
50,000
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