H3C H3C S7500E-X, Configuration Manual

Page: 27 / 290

14
Step Command Remarks
2.
Enable SNMP
notifications for
the MAC address
table.
snmp-agent trap enable mac-address
[
mac-move
]
By default, SNMP notifications
are enabled for the MAC address
table.
When SNMP notifications are
disabled for the MAC address
table, syslog messages are sent
to notify important events on the
MAC address table module.
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
|
multiport
] [
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
]
Display MAC address statistics.
display mac-address statistics
Display the MAC address move
records (in standalone mode).
display mac-address mac-move
[
slot slot-number
]
Display the MAC address move
records (in IRF mode).
display mac-address mac-move
[
chassis chassis-number slot
slot-number
]
MAC address table configuration example
Network requirements
On a network:
•
Host A at MAC address 000f-e235-dc71 is connected to interface GigabitEthernet 1/0/1 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 Host B.
•
Set the aging timer to 500 seconds for dynamic MAC address entries.