HP A5120 EI Series Configuration Guide

75
To do...
Use the command...
Remarks
Enter interface
view or port
group view
Enter Ethernet interface
view or Layer 2 aggregate
interface view
interface interface-type
interface-number
Required
Use either command.
Enter port group view
port-group manual port-
group-name
Configure the current ports as edge ports
stp edged-port enable
Required
All ports are non-edge ports
by default.
NOTE:
 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.
 Among loop guard, root guard and edge port settings, only one function (whichever is configured the earliest)
can at a time take effect on a port.
Configuring path costs of ports
Path cost is a parameter related to the rate of a port. On an MSTP-enabled 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.
Make the following configurations on the leaf nodes only.
Specifying a standard that the device uses when it calculates the default path cost
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.
Follow these steps to specify a standard for the device to use when it calculates the default path cost:
To do...
Use the command...
Remarks
Enter system view
system-view
—
Specify a standard for the device
to use when it calculates the
default path costs of its ports
stp pathcost-standard { dot1d-
1998 | dot1t | legacy }
Optional
By default, the device calculates
the default path cost for ports
based on a private standard.
CAUTION:
If you change the standard that the device uses to calculate the default path costs, you restore the path
costs to the default.

HP A5120 EI Series Specifications

General

Uplink Ports	4 x SFP
Stacking	No
Management	CLI, Web, SNMP
Routing Protocols	RIP, OSPF
Power Supply	AC
MAC Address Table Size	16K
Dimensions	440 x 430 x 44 mm
Operating Temperature	0°C to 45°C
Operating Humidity	10% to 90% non-condensing
Model	HP A5120-24G EI Switch (JG234A)
VLANs	4094