Stp Point-To-Point - 3Com S7906E Command Reference Manual

Table 1-10 Link speed vs. path cost
Link speed
0
10 Mbps
100 Mbps
1000 Mbps
10 Gbps
When calculating path cost for an aggregate port, 802.1D-1998 does not take into account the number
of member ports in its aggregation group as 802.1T does. The calculation formula is: Path Cost =
200,000,000/link speed (in 100 kbps), where link speed is the sum of the link speed values of the
non-blocked ports in the aggregation group.
Examples
# Configure the device to calculate the default path cost for ports based on IEEE 802.1D-1998.
<Sysname> system-view
[Sysname] stp pathcost-standard dot1d-1998
# Configure the device to calculate the default path cost for ports based on IEEE 802.1t.
<Sysname> system-view
[Sysname] stp pathcost-standard dot1t

stp point-to-point

Syntax
stp point-to-point { auto | force-false | force-true }
undo stp point-to-point
View
Ethernet port view, port group view, Layer-2 aggregate port view
Duplex state
—
Single Port
Aggregate Link 2 Ports
Aggregate Link 3 Ports
Aggregate Link 4 Ports
Single Port
Aggregate Link 2 Ports
Aggregate Link 3 Ports
Aggregate Link 4 Ports
Single Port
Aggregate Link 2 Ports
Aggregate Link 3 Ports
Aggregate Link 4 Ports
Single Port
Aggregate Link 2 Ports
Aggregate Link 3 Ports
Aggregate Link 4 Ports
Path cost in Path cost in
802.1D-1998 IEEE 802.1t
standard
65535 200,000,000
100 2,000,000
100 1,000,000
100 666,666
100 500,000
19 200,000
19 100,000
19 66,666
19 50,000
4 20,000
4 10,000
4 6,666
4 5,000
2 2,000
2 1,000
2 666
2 500
1-25
Path cost in
proprietary
standard standard
200,000
2,000
1,800
1,600
1,400
200
180
160
140
20
18
16
14
2
1
1
1