HP A5120 EI Series Configuration Guide

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MAC address table configuration example
Network requirements
 The MAC address of one host is 000f-e235-dc71 and belongs to VLAN 1. It is connected to
GigabitEthernet 1/0/1 of the device. To prevent MAC address spoofing, add a static entry into the
MAC address table of the device for the host.
 The MAC address of another host is 000f-e235-abcd and belongs to VLAN 1. Because this host
once behaved suspiciously on the network, you can add a destination blackhole MAC address entry
for the MAC address to drop all packets destined for the host.
 Set the aging timer for dynamic MAC address entries to 500 seconds.
Configuration procedure
# Add a static MAC address entry.
<Sysname> system-view
[Sysname] mac-address static 000f-e235-dc71 interface gigabitethernet 1/0/1 vlan 1
# Add a destination blackhole MAC address entry.
[Sysname] mac-address blackhole 000f-e235-abcd vlan 1
# Set the aging timer for dynamic MAC address entries to 500 seconds.
[Sysname] mac-address timer aging 500
# Display the MAC address entry for port GigabitEthernet 1/0/1.
[Sysname] display mac-address interface gigabitethernet 1/0/1
MAC ADDR VLAN ID STATE PORT INDEX AGING TIME
000f-e235-dc71 1 Config static GigabitEthernet 1/0/1 NOAGED
--- 1 mac address(es) found ---
# Display information about the destination blackhole MAC address table.
[Sysname] display mac-address blackhole
MAC ADDR VLAN ID STATE PORT INDEX AGING TIME
000f-e235-abcd 1 Blackhole N/A NOAGED
--- 1 mac address(es) found ---
# View the aging time of dynamic MAC address entries.
[Sysname] display mac-address aging-time
Mac address aging time: 500s

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