Huawei Quidway S5600 Series - Page 263

Operation Manual – MSTP
Quidway S5600 Series Ethernet Switches-Release 1510 Chapter 1
MSTP Configuration
Huawei Technologies Proprietary
1-27
Path cost can be determined by switch or through manual configuration.
I. Standards for calculating path costs of ports
Currently, a switch can calculate the path costs of ports based on one of the following
standards:
z dot1d-1998: Adopts the IEEE 802.1D-1998 standard to calculate the default path
costs of ports.
z dot1t: Adopts the IEEE 802.1t standard to calculate the default path costs of ports.
z legacy: Adopts the standard defined by private to calculate the default path costs
of ports.
Table 1-22 Specify the standard for calculating path costs
Operation Command Description
Enter system view
system-view
—
Specify the
standard to be
used to calculate
the default path
costs of the links
connected to the
ports of the switch
stp pathcost-standard
{ dot1d-1998 | dot1t |
legacy }
Optional
By default, the IEEE 802.1t
standard is used to calculate
the default path costs.
Table 1-23 Transmission speeds and the corresponding path costs
Transm
ission
speed
Operation mode
(half-/full-duplex)
802.1D-1998 IEEE 802.1t
Proprietary
standard
0 - 65,535 200,000,000 200,000
10
Mbps
Half-duplex/Full-duplex
Aggregated link 2 ports
Aggregated link 3 ports
Aggregated link 4 ports
100
95
95
95
200,000
1,000,000
666,666
500,000
2,000
1,800
1,600
1,400
100
Mbps
Half-duplex/Full-duplex
Aggregated link 2 ports
Aggregated link 3 ports
Aggregated link 4 ports
19
15
15
15
200,000
100,000
66,666
50,000
200
180
160
140
1,000
Mbps
Full-duplex
Aggregated link 2 ports
Aggregated link 3 ports
Aggregated link 4 ports
4
3
3
3
200,000
10,000
6,666
5,000
20
18
16
14