HP A5120 EI Series Configuration Guide

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Task
Remarks
Enabling the output of port state transition information
Optional
Enabling the MSTP feature
Required
Configuring the leaf
nodes
Configuring an MST region
Required
Configuring the work mode of an MSTP device
Optional
Configuring the timeout factor
Optional
Configuring the maximum port rate
Optional
Configuring ports as edge ports
Optional
Configuring path costs of ports
Optional
Configuring port priority
Optional
Configuring the link type of ports
Optional
Configuring the mode a port uses to recognize/send MSTP
packets
Optional
Enabling the output of port state transition information
Optional
Enabling the MSTP feature
Required
Performing mCheck
Optional
Configuring Digest Snooping
Optional
Configuring No Agreement Check
Optional
Configuring protection functions
Optional
NOTE:
 If GVRP and MSTP are enabled on a device at the same time, GVRP packets are forwarded along the CIST. To
advertise a certain VLAN within the network through GVRP, be sure that this VLAN is mapped to the CIST (MSTI
0) when you configure the VLAN-to-instance mapping table. For more information about GVRP, see the chapter
―GVRP configuration.‖
 MSTP is mutually exclusive with any of the following functions on a port: RRPP, Smart Link, and BPDU tunneling.
 Configurations made in system view take effect globally. Configurations made in Ethernet interface view take
effect on the current interface only. Configurations made in port group view take effect on all member ports in
the port group. Configurations made in Layer 2 aggregate interface view take effect only on the aggregate
interface. Configurations made on an aggregation member port can take effect only after the port is removed
from the aggregation group.
 After you enable MSTP on a Layer 2 aggregate interface, the system performs MSTP calculation on the Layer 2
aggregate interface but not on the aggregation member ports. The MSTP enable state and forwarding state of
each selected port in an aggregation group is consistent with those of the corresponding Layer 2 aggregate
interface.
 Though the member ports of an aggregation group do not participate in MSTP calculation, the ports still reserve
their MSTP configurations for participating in MSTP calculation after leaving the aggregation group.

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