F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

90
Ste
p
Command Remarks
147. Enter system view. system-view N/A
148. Enter Ethernet interface view or
Layer 2 aggregate interface view.
interface interface-type interface-number N/A
149. Configure the current ports as edge
ports.
stp edged-port enable
All ports are non-edge
ports by default.
436BConfiguring path costs of ports
Path cost is a parameter related to the rate of a port. On a spanning tree device, a port can have different
path costs in different MSTIs. Setting appropriate path costs allows VLAN traffic flows to be forwarded
along different physical links, achieving VLAN-based load balancing.
You can have the device automatically calculate the default path cost, or you can configure the path cost
for ports.
1143BSpecifying 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 of the default path cost. The
device supports the following standards:
• dot1d-1998—The device calculates default path costs for ports based on IEEE 802.1d-1998.
• dot1t—The device calculates default path costs for ports based on IEEE 802.1t.
• legacy—The device calculates default path costs for ports based on a private standard.
2305HTable 16 shows a comparison between link speeds and path costs for each of these standards.
Table 16 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