H3C S3600V2 SERIES, Руководство по настройке коммутации на уровне 2 в локальных сетях

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You can have the device automatically calculate the default path cost, or you can configure the path cost
for ports.
Specifying a standard for the device to use when it calculates
the default path cost
CAUTION:
If you change the standard that the device uses to calculate the default path costs, you restore the path
costs to the default.
You can specify a standard for the device to use in automatic calculation for the default path cost. The
device supports the following standards:
• dot1d-1998 —The device calculates the default path cost for ports based on IEEE 802.1d-1998.
• dot1t
—The device calculates the default path cost for ports based on IEEE 802.1t.
•
legacy —The device calculates the default path cost for ports based on a private standard.
Table 14 shows the mappings between the link speed and the path cost.
Table 14 Mappings between the link speed and the path cost
Link speed Port type
Path cost
IEEE 802.1d-1998
IEEE 802.1t Private standard
0 N/A 65535 200,000,000 200,000
10 Mbps
Single port
100
2,000,000 2000
Aggregate interface
containing 2 Selected ports
1,000,000 1800
Aggregate interface
containing 3 Selected ports
666,666 1600
Aggregate interface
containing 4 Selected ports
500,000 1400
100 Mbps
Single port
19
200,000 200
Aggregate interface
containing 2 Selected ports
100,000 180
Aggregate interface
containing 3 Selected ports
66,666 160
Aggregate interface
containing 4 Selected ports
50,000 140
1000 Mbps
Single port
4
20,000 20
Aggregate interface
containing 2 Selected ports
10,000 18
Aggregate interface
containing 3 Selected ports
6666 16
Aggregate interface
containing 4 Selected ports
5000 14