3com S7906E 설치 설명서

 

1-8 

Display the system or interface 
MAC address learning state 

display mac-address 
mac-learning [ interface-type 
interface-number ] 

Display MAC address statistics 

 

z 

The MAC address of one host is 000f-e235-dc71 and belongs to VLAN 1. It is connected to 

GigabitEthernet2/0/1 of the device. To prevent MAC address spoofing, add a static entry into the 

MAC address table of the device for the host. 

z 

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 for security sake.  

z 

Set the aging timer for dynamic MAC address entries to 500 seconds.  

# Add a static MAC address entry. 

<Sysname> system-view 

[Sysname] mac-address static 000f-e235-dc71 interface gigabitethernet 2/0/1 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 GigabitEthernet2/0/1. 

[Sysname] display mac-address interface gigabitethernet 2/0/1 

MAC ADDR          VLAN ID  STATE            PORT INDEX             AGING TIME 

 

000f-e235-dc71   1       Config static      GigabitEthernet2/0/1   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