Configuration Examples; Adding A Static Mac Address Entry Manually - 3Com 4500 Configuration Manual

Display the aging time of the dynamic
MAC address entries in the MAC address
table
Display the configured start port MAC
address

Configuration Examples

Adding a Static MAC Address Entry Manually

Network requirements
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.
The MAC address of the server is 000f-e20f-dc71.
Port GigabitEthernet 1/0/2 belongs to VLAN 1.
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.
Configuration procedure
# 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
000f-e20f-dc71
000f-e235-abcd
000f-e20f-a7d6
000f-e20f-b1fb
000f-e20f-f116
--- 4 mac address(es) found on port GigabitEthernet1/0/2 ---
To do...
VLAN ID STATE
1 Config static GigabitEthernet1/0/2 NOAGED
1 Blackhole
1 Learned
1 Learned
1 Learned
Use the command...
display mac-address aging-time
display port-mac
PORT INDEX
GigabitEthernet1/0/2 NOAGED
GigabitEthernet1/0/2 AGING
GigabitEthernet1/0/2 AGING
GigabitEthernet1/0/2 AGING
1-8
Remarks
AGING TIME(s)