3com 5500-ei pwr Instruccion De Instalación

 

1-8 

Display the aging time of the dynamic 
MAC address entries in the MAC address 
table 

display mac-address aging-time 

Display the configured start port MAC 
address 

 

The server connects to the switch through GigabitEthernet 1/0/2. To prevent the switch from 

broadcasting packets destined for the server, it is required to add the MAC address of the server to the 

MAC address table of the switch, which then forwards packets destined for the server through 

GigabitEthernet 1/0/2. 

z 

The MAC address of the server is 000f-e20f-dc71. 

z 

Port GigabitEthernet 1/0/2 belongs to VLAN 1. 

z 

Suppose the MAC address of a host is 000f-e235-abcd and belongs to VLAN 1. Because the host 

once behaved suspiciously on the network, you can add a blackhole MAC address entry for the 

MAC address to drop all packets destined for the host for security sake. 

# Enter system view. 

<Sysname> system-view 

[Sysname] 

# Add a MAC address, with the VLAN, ports, and states specified. 

[Sysname] mac-address static 000f-e20f-dc71 interface GigabitEthernet 1/0/2 vlan 1 

# Add a black hole MAC address 000f-e235-abcd, with the VLAN and ports specified. 

[Sysname] mac-address blackhole 000f-e235-abcd interface GigabitEthernet 1/0/2 vlan 1  

# Display information about the current MAC address table. 

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

Unit 1 

MAC ADDR          VLAN ID  STATE         PORT INDEX           AGING TIME(s) 

000f-e20f-dc71    1        Config static GigabitEthernet1/0/2 NOAGED 

000f-e235-abcd    1        Blackhole     GigabitEthernet1/0/2 NOAGED 

000f-e20f-a7d6    1        Learned       GigabitEthernet1/0/2 AGING 

000f-e20f-b1fb    1        Learned       GigabitEthernet1/0/2 AGING 

000f-e20f-f116    1        Learned       GigabitEthernet1/0/2 AGING 

---  4 mac address(es) found on port GigabitEthernet1/0/2 ---