R0106-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V7)

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To configure the aging timer for dynamic MAC address entries:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Configure the aging timer for
dynamic MAC address entries.
mac-address timer { aging seconds
| no-aging }
The aging timer for dynamic MAC
address entries is 300 seconds.
Displaying and maintaining the MAC address table
Execute display commands in any view.
Task Command
Display MAC address table
information.
display mac-address [ mac-address [ vlan vlan-id ] | [ [ dynamic |
static ] [ interface interface-type interface-number ] | blackhole ]
[ vlan vlan-id ] [ count ] ]
Display the aging timer for dynamic
MAC address entries.
display mac-address aging-time
Display the system or interface MAC
address learning state.
display mac-address mac-learning [ interface interface-type
interface-number ]
MAC address table configuration example
Network requirements
On a network:
• Host A at MAC address 000f-e235-dc71 is connected to interface GigabitEthernet 2/1/1 of
Device and belongs to VLAN 1.
• Host B at MAC address 000f-e235-abcd, which behaved suspiciously on the network, also belongs
to VLAN 1.
Configure the MAC address table as follows:
• To prevent MAC address spoofing, add a static entry for Host A in the MAC address table of
Device.
• To drop all frames destined for Host B, add a blackhole MAC address entry for the host.
• Set the aging timer to 500 seconds for dynamic MAC address entries.
Configuration procedure
# Add a static MAC address entry for MAC address 000f-e235-dc71 on GigabitEthernet 2/1/1 that
belongs to VLAN 1.
<Device> system-view
[Device] mac-address static 000f-e235-dc71 interface gigabitethernet 2/1/1 vlan 1
# Add a blackhole MAC address entry for MAC address 000f-e235-abcd that belongs to VLAN 1.
[Device] mac-address blackhole 000f-e235-abcd vlan 1