R3303-HP HSR6800 Routers Layer 2 - LAN Switching Configuration Guide

6
Step Command Remarks
3. Configure the MAC learning
limit on the interface or port
group.
mac-address max-mac-count
count
By default, the MAC learning limit
on an interface is not configured.
Displaying and maintaining MAC address tables
Task Command Remarks
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 ] ] [ | { begin | exclude | include }
regular-expression ]
Available in any
view.
Display the aging timer for
dynamic MAC address
entries.
display mac-address aging-time [ | { begin |
exclude | include } regular-expression ]
Available in any
view.
Display the system or interface
MAC address learning state.
display mac-address mac-learning [ interface-type
interface-number ] [ | { begin | exclude | include }
regular-expression ]
Available in any
view.
Display MAC address
statistics.
display mac-address statistics [ | { begin | exclude |
include } regular-expression ]
Available in any
view.
MAC address table configuration example
Network requirements
As shown in Figure 1:
• The MAC address of Host A is 000f-e235-dc71 and belongs to VLAN 1. It is connected to
GigabitEthernet 4/0/1 of the device. To prevent MAC address spoofing, add a static entry for the
host in the MAC address table of the device.
• The MAC address of Host B is 000f-e235-abcd and belongs to VLAN 1. For security, because this
host once behaved suspiciously on the network, add a destination blackhole MAC address entry for
the host MAC address, so all packets destined for the host are dropped.
• Set the aging timer for dynamic MAC address entries to 500 seconds.