Configuration Restrictions And Guidelines; Configuration Procedure; Configuring Path Costs Of Ports; Specifying A Standard For The Device To Use When It Calculates The Default Path Cost - HP 3100 Series Configuration Manual

Configuration restrictions and guidelines

•
If BPDU guard is disabled, a port set as an edge port will become a non-edge port again if it
receives a BPDU from another port. To restore the edge port, re-enable it.
•
If a port directly connects to a user terminal, configure it as an edge port and enable BPDU
guard for it. This enables the port to transition to the forwarding state quickly while ensuring
network security.
•
You cannot configure edge port settings and loop guard on a port at the same time.

Configuration procedure

To specify a port or a group of ports as edge port or ports:
Step
Enter system view.
1.
Enter interface view or port
2.
group view.
Configure the current ports
3.
as edge ports.

Configuring 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.
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 13 shows the mappings between the link speed and the path cost.
Command
system-view
•
Enter Layer 2 Ethernet interface
view or Layer 2 aggregate interface
view:
interface interface-type
interface-number
•
Enter port group view:
port-group manual
port-group-name
stp edged-port enable
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Remarks
N/A
Use one of the commands.
All ports are non-edge
ports by default.