1-29
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname]stp interface Ethernet1/0/1 no-agreement-check
stp pathcost-standard
Syntax
stp
pathcost
-
standard
{
dot1d-1998
|
dot1t
|
legacy
}
undo
stp pathcost-standard
View
System view
Parameters
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.
Description
Use the
stp pathcost-standard
command to set the standard to be used to calculate the default path
costs of the links connected to the switch.
Use the
undo stp pathcost-standard
command to specify to use the default standard.
By default, the device calculates the default path cost for ports based on a private standard. STP uses
path costs to indicate the quality of links. A smaller path cost indicates a higher link quality. The path
cost of a port is related to the rate of the link connecting the port. The higher the link rate, the smaller the
path cost. The path cost of a port may vary when different standards are used to calculate it. For details,
see
Table 1-8
.
Table 1-8
Link speeds and the corresponding path costs
Link speed
Duplex state
Path cost in
802.1d-1998
standard
Path cost in
IEEE 802.1t
standard
Path cost in
private
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
Summary of Contents for 5500-EI PWR
Page 43: ...2 6...
Page 76: ...1 17...
Page 228: ...ii stp transmit limit 1 44 vlan mapping modulo 1 45 vlan vpn tunnel 1 46...
Page 477: ...5 24 Sysname vlan 2 Sysname vlan2 service type multicast...
Page 503: ...2 3 System View return to User View with Ctrl Z Sysname dot1x url http 192 168 19 23...
Page 519: ...iii...
Page 597: ...2 2 security policy server 192 168 0 1 user name format without domain...
Page 648: ...1 9 Examples Clear static ARP entries Sysname reset arp static...
Page 663: ...4 3 Sysname resilient arp interface vlan interface 2...
Page 767: ...1 28 From 12 00 Jan 1 2008 to 12 00 Jun 1 2008...
Page 1111: ...ii xmodem get 3 18...
Page 1314: ...A 44 Z...
