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| Title | Size | Download |
|---|---|---|
| 01-MAC address table commands | 88.09 KB |
display mac-address aging-time
display mac-address mac-learning
mac-address mac-learning enable
mac-address mac-learning priority
mac-address max-mac-count enable-forwarding
mac-address notification mac-move
mac-address notification mac-move suppression (interface view)
mac-address notification mac-move suppression (system view)
snmp-agent trap enable mac-address
MAC address table commands
The WX1800H series, WX2500H series, and WX3000H series access controllers do not support the slot keyword or the slot-number argument.
This document covers the configuration of MAC address entries, including static, dynamic, and blackhole MAC address entries.
display mac-address
Use display mac-address to display MAC address entries.
Syntax
display mac-address [ mac-address [ vlan vlan-id ] | [ [ dynamic | static ] [ interface interface-type interface-number ] | blackhole ] [ vlan vlan-id ] [ count ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
mac-address: Specifies a MAC address in the format of H-H-H. When entering a MAC address, you can omit the leading zeros in each H section. For example, enter f-e2-1 for 000f-00e2-0001.
vlan vlan-id: Specifies a VLAN by its ID in the range of 1 to 4094.
dynamic: Displays dynamic MAC address entries.
static: Displays static MAC address entries.
interface interface-type interface-number: Specifies an interface by its type and number.
blackhole: Displays blackhole MAC address entries.
count: Displays only the number of MAC address entries that match all entry attributes you specify in the command. Detailed information about MAC address entries is not displayed. For example, you can use the display mac-address vlan 20 dynamic count command to display the number of dynamic entries for VLAN 20. If you do not specify an entry attribute, the command displays the number of entries in the MAC address table. If you do not specify this keyword, the command displays detailed information about the specified MAC address entries.
Usage guidelines
A MAC address entry includes a destination MAC address, an outgoing interface, and a VLAN ID.
If you do not specify any parameters, the command displays all MAC address entries.
This command displays dynamic MAC address entries for an aggregate interface only when the aggregate interface has a minimum of one Selected member port.
Examples
# Display MAC address entries for VLAN 100.
<Sysname> display mac-address vlan 100
MAC Address VLAN ID State Port/NickName Aging
0033-0033-0033 100 Blackhole N/A N
0000-0000-0002 100 Static GE1/0/3 N
00e0-fc00-5829 100 Learned GE1/0/4 Y
# Display the number of MAC address entries.
<Sysname> display mac-address count
1 mac address(es) found.
Table 1 Command output
|
Field |
Description |
|
VLAN ID |
ID of the VLAN to which the outgoing interface of the MAC address entry belongs. |
|
State |
MAC address entry state: · Static—Static MAC address entry. · Learned—Dynamic MAC address entry. Dynamic entries can be learned or manually configured. · Blackhole—Blackhole MAC address entry. |
|
Port/NickName |
The outgoing interface for packets that are destined for the MAC address. This field displays N/A for a blackhole MAC address entry. |
|
Aging |
Whether the entry can age out: · Y—The entry can age out. · N—The entry never ages out. |
|
mac address(es) found |
Number of matching MAC address entries. |
Related commands
· mac-address
· mac-address timer
display mac-address aging-time
Use display mac-address aging-time to display the aging timer for dynamic MAC address entries.
Syntax
display mac-address aging-time
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display the aging timer for dynamic MAC address entries.
<Sysname> display mac-address aging-time
MAC address aging time: 300s.
Related commands
mac-address timer
display mac-address mac-learning
Use display mac-address mac-learning to display the global MAC address learning status and the MAC learning status of the specified interface or all interfaces.
Syntax
display mac-address mac-learning [ interface interface-type interface-number ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify an interface, the command displays the global MAC address learning status and the MAC address learning status of all interfaces.
Examples
# Display the global MAC address learning status and the MAC learning status of all interfaces.
<Sysname> display mac-address mac-learning
Global MAC address learning status: Enabled.
Port Learning Status
GE1/0/1 Enabled
GE1/0/2 Enabled
GE1/0/3 Enabled
GE1/0/4 Enabled
Table 2 Command output
|
Field |
Description |
|
Global MAC address learning status |
Global MAC address learning status: · Enabled. · Disabled. |
|
Learning Status |
MAC address learning status of an interface: · Enabled. · Disabled. |
Related commands
mac-address mac-learning enable
display mac-address mac-move
Use display mac-address mac-move to display the MAC address move records after the device is started.
display mac-address mac-move [ slot slot-number ]
network-admin
slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, the command displays MAC address move records for all IRF member devices.
Usage guidelines
· In the MAC address move records, records with the same MAC address, VLAN, source port, and current port are considered to be one record.
· A device can save a maximum of 20 MAC address move records. When the number of MAC address move records exceeds 20, the most recent record will override the oldest record based on the last MAC address move time. (IRF-incapable devices.)
· An IRF member device can save a maximum of 20 MAC address move records. When the number of MAC address move records exceeds 20, the most recent record will override the oldest record based on the last MAC address move time. (IRF-capable devices.)
# Display the MAC address move records on IRF member device 1.
<Sysname> display mac-address mac-move slot 1
MAC address VLAN Current port Source port Last time Times
0000-0001-002c 1 GE1/0/1 GE1/0/2 2013-05-20 13:40:52 1
0000-0001-002c 1 GE1/0/2 GE1/0/1 2013-05-20 13:41:30 1
--- 2 MAC address moving records found ---
Table 3 Command output
mac-address notification mac-move
mac-address (interface view)
Use mac-address to add or modify a MAC address entry on an interface.
Use undo mac-address to delete a MAC address entry on an interface.
Syntax
mac-address { dynamic | static } mac-address vlan vlan-id
undo mac-address { dynamic | static } mac-address vlan vlan-id
Default
An interface is not configured with MAC address entries.
Views
Layer 2 aggregate interface view
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
dynamic: Specifies dynamic MAC address entries.
static: Specifies static MAC address entries.
mac-address: Specifies a MAC address in the format of H-H-H, excluding multicast, all-zero, and all-F MAC addresses. When entering a MAC address, you can omit the leading zeros in each H section. For example, enter f-e2-1 for 000f-00e2-0001.
vlan vlan-id: Specifies an existing VLAN to which the specified interface belongs. The value range for the vlan-id argument is 1 to 4094.
Usage guidelines
Typically, the device automatically builds the MAC address table by learning the source MAC addresses of incoming frames on each interface. However, you can manually configure static MAC address entries. For a MAC address, a manually configured static entry takes precedence over a dynamically learned entry. To improve the security for the user device connected to an interface, manually configure a static entry to bind the user device to the interface. Then, the frames destined for the user device (for example, Host A) are always sent out of the interface. Other hosts using the forged MAC address of Host A cannot obtain the frames destined for Host A.
The MAC address entry configuration cannot survive a reboot unless you save it. The dynamic MAC address entries, however, are lost upon reboot whether or not you save the configuration.
Examples
# Add a static entry for MAC address 000f-e201-0101 on interface GigabitEthernet 1/0/1 that belongs to VLAN 2.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] mac-address static 000f-e201-0101 vlan 2
# Add a static entry for MAC address 000f-e201-0101 on Layer 2 aggregate interface Bridge-Aggregation 1 that belongs to VLAN 1.
<Sysname> system-view
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] mac-address static 000f-e201-0102 vlan 1
Related commands
· display mac-address
· mac-address (system view)
mac-address (system view)
Use mac-address to add or modify a MAC address entry.
Use undo mac-address to delete one or all MAC address entries.
Syntax
mac-address { dynamic | static } mac-address interface interface-type interface-number vlan vlan-id
mac-address blackhole mac-address vlan vlan-id
undo mac-address [ [ dynamic | static ] mac-address interface interface-type interface-number vlan vlan-id ]
undo mac-address [ blackhole | dynamic | static ] [ mac-address ] vlan vlan-id
undo mac-address [ dynamic | static ] interface interface-type interface-number
Default
The system is not configured with MAC address entries.
Views
System view
Predefined user roles
network-admin
Parameters
dynamic: Specifies dynamic MAC address entries.
static: Specifies static MAC address entries.
blackhole: Specifies blackhole MAC address entries. Packets whose destination MAC addresses match blackhole MAC address entries are dropped.
mac-address: Specifies a MAC address in the format of H-H-H, excluding multicast, all-zero, and all-F MAC addresses. When entering a MAC address, you can omit the leading zeros in each H section. For example, enter f-e2-1 for 000f-00e2-0001.
vlan vlan-id: Specifies an existing VLAN to which the interface belongs. The value range for the vlan-id argument is 1 to 4094.
interface interface-type interface-number: Specifies an outgoing interface by its type and number.
Usage guidelines
Typically, the device automatically builds the MAC address table by learning the source MAC addresses of incoming frames on each interface. However, you can manually configure static MAC address entries. For a MAC address, a manually configured static entry takes precedence over a dynamically learned entry. To improve the security for the user device connected to an interface, manually configure a static entry to bind the user device to the interface. Then, the frames destined for the user device (for example, Host A) are always sent out of the interface. Other hosts using the forged MAC address of Host A cannot obtain the frames destined for Host A.
To drop frames with the specified destination MAC addresses, you can configure blackhole MAC address entries.
A static or blackhole MAC address entry can overwrite a dynamic MAC address entry, but not vice versa.
If you execute the undo mac-address command without specifying any parameters, this command deletes all MAC address entries.
You can delete all the MAC address entries of the specified VLAN. You can also delete only one type (dynamic, static, or blackhole) of MAC address entries. You can single out an interface and delete the corresponding MAC address entries.
Examples
# Add a static entry for MAC address 000f-e201-0101. Then, all frames that are destined for this MAC address are sent out of interface GigabitEthernet 1/0/1, which belongs to VLAN 2.
<Sysname> system-view
[Sysname] mac-address static 000f-e201-0101 interface gigabitethernet 1/0/1 vlan 2
Related commands
· display mac-address
· mac-address (interface view)
mac-address mac-learning enable
Use mac-address mac-learning enable to enable MAC address learning globally or on an interface.
Use undo mac-address mac-learning enable to disable MAC address learning globally or on an interface.
Syntax
mac-address mac-learning enable
undo mac-address mac-learning enable
Default
MAC address learning is enabled.
Views
System view
Layer 2 aggregate interface view
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
To prevent the MAC address table from becoming saturated, you can disable MAC address learning.
For example, a number of packets with different source MAC addresses reaching a device can affect the MAC address table update. To avoid such attacks, you can disable MAC address learning by following these guidelines:
· You can disable MAC address learning on a per-interface basis. If you disable MAC address learning globally, MAC address learning is disabled for all interfaces. The device then stops learning MAC addresses and cannot dynamically update the MAC address table.
· Because disabling MAC address learning can result in broadcast storms, enable broadcast storm suppression after you disable MAC address learning on an interface. For more information about broadcast storm suppression, see Interface Configuration Guide.
· With MAC address learning enabled globally, you can disable MAC address learning for an interface.
After MAC address learning is disabled, existing dynamic MAC address entries will age out.
Examples
# Disable MAC address learning globally.
<Sysname> system-view
[Sysname] undo mac-address mac-learning enable
# Disable MAC address learning on interface GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] undo mac-address mac-learning enable
# Disable MAC address learning on interface Bridge-Aggregation 1.
<Sysname> system-view
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] undo mac-address mac-learning enable
Related commands
display mac-address mac-learning
mac-address mac-learning priority
Use mac-address mac-learning priority to assign MAC learning priority to an interface.
Use undo mac-address mac-learning priority to restore the default.
Syntax
mac-address mac-learning priority { high | low }
undo mac-address mac-learning priority
Default
Low MAC address learning priority is used.
Views
Layer 2 aggregate interface view
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
high: Assigns high MAC learning priority.
low: Assigns low MAC learning priority.
Usage guidelines
The MAC address learning priority values can be high and low. An interface with high MAC address learning priority can learn any MAC address. An interface with low MAC address learning priority can learn only the MAC addresses that have not been learned by high-priority interfaces.
The MAC learning priority mechanism can help defend your network against MAC address spoofing attacks. To prevent the downlink interface from learning the MAC address of an upper layer device (for example, the gateway), you can perform the following tasks:
· Assign high MAC learning priority to an uplink interface.
· Assign low MAC learning priority to a downlink interface.
Examples
# Assign high MAC learning priority to interface GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] mac-address mac-learning priority high
# Assign high MAC learning priority to interface Bridge-Aggregation 1.
<Sysname> system-view
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] mac-address mac-learning priority high
mac-address max-mac-count
Use mac-address max-mac-count to set the MAC learning limit on an interface.
Use undo mac-address max-mac-count to restore the default.
Syntax
mac-address max-mac-count count
undo mac-address max-mac-count
Default
The MAC learning limit is the device-specific maximum value for the count argument.
Views
Layer 2 aggregate interface view
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
count: Sets the maximum number of MAC addresses that can be learned on an interface. When the argument is set to 0, the interface is not allowed to learn MAC addresses.
The following matrix shows the value ranges for the count argument:
|
Hardware series |
Model |
Value range |
|
WX1800H series |
WX1804H WX1810H WX1820H |
0 to 512: WX1804H 0 to 2048: · WX1810H · WX1820H |
|
WX2500H series |
WX2510H |
0 to 2048 |
|
WX2540H |
0 to 3072 |
|
|
WX2560H |
0 to 6144 |
|
|
WX3000H series |
WX3010H |
0 to 4096 |
|
WX3010H-L |
0 to 2048 |
|
|
WX3010H-X |
0 to 3072 |
|
|
WX3024H |
0 to 8192 |
|
|
WX3024H-L |
0 to 4096 |
|
|
WX3500H series |
WX3508H |
0 to 4096 |
|
WX3510H |
0 to 16384 |
|
|
WX3520H |
0 to 32768 |
|
|
WX3540H |
0 to 40960 |
|
|
WX5500E series |
WX5510E |
0 to 20480 |
|
WX5540E |
0 to 61440 |
|
|
WX5500H series |
WX5540H WX5560H WX5580H |
0 to 61440: WX5540H 0 to 81920: · WX5560H · WX5580H |
|
Access controller modules |
EWPXM1MAC0F EWPXM1WCME0 EWPXM2WCMD0F LSQM1WCMX20 LSQM1WCMX40 LSUM1WCME0 LSUM1WCMX20RT LSUM1WCMX40RT |
0 to 40960: · EWPXM2WCMD0F · LSQM1WCMX20 · LSUM1WCMX20RT 0 to 61440: · EWPXM1MAC0F · EWPXM1WCME0 · LSQM1WCMX40 · LSUM1WCME0 · LSUM1WCMX40RT |
Usage guidelines
This command limits the number of MAC address entries to limit the MAC address table size. A large MAC address table will degrade forwarding performance. When the number of MAC address entries learned by an interface reaches the limit, the interface stops learning MAC address entries.
Examples
# Configure interface GigabitEthernet 1/0/1 to learn a maximum of 600 MAC address entries.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] mac-address max-mac-count 600
Related commands
· mac-address
· mac-address max-mac-count enable-forwarding
mac-address max-mac-count enable-forwarding
Use mac-address max-mac-count enable-forwarding to enable the device to forward unknown frames received on an interface after the MAC learning limit on the interface is reached.
Use undo mac-address max-mac-count enable-forwarding to disable the device from forwarding unknown frames received on an interface after the MAC learning limit on the interface is reached.
Syntax
mac-address max-mac-count enable-forwarding
undo mac-address max-mac-count enable-forwarding
Default
When the MAC learning limit on an interface is reached, the device can forward unknown frames received on the interface.
Views
Layer 2 aggregate interface view
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
In this document, unknown frames refer to frames whose source MAC addresses are not in the MAC address table.
Examples
# Configure GigabitEthernet 1/0/1 to learn a maximum of 600 MAC address entries.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] mac-address max-mac-count 600
# Disable the device from forwarding unknown frames received on GigabitEthernet 1/0/1 after the MAC learning limit on GigabitEthernet 1/0/1 is reached.
[Sysname-GigabitEthernet1/0/1] undo mac-address max-mac-count enable-forwarding
Related commands
· mac-address
· mac-address max-mac-count
mac-address notification mac-move
Use mac-address notification mac-move to enable MAC address move notifications and optionally specify a MAC move detection interval.
Use undo mac-address notification mac-move to restore the default.
mac-address notification mac-move [ interval interval-value ]
undo mac-address notification mac-move
MAC address move notifications are disabled.
network-admin
interval interval-value: Sets the interval for detecting MAC address moves, in the range of 1 to 60 minutes. If you do not specify this option, the default setting of 1 minute is used.
Usage guidelines
· MAC address.
· VLAN ID of the MAC address entry.
· Current port and source port of the MAC address moves.
· Number of MAC address moves within a detection interval.
A MAC address can only have one MAC address move record.
After you execute this command, the system sends only syslog messages to the information center module. If the snmp-agent trap enable mac-address command is also executed, the system also sends SNMP notifications to the SNMP module.
Within a detection interval, the device can generate a maximum of 20 MAC address move records. The device deletes MAC address move records of other MAC addresses when the limit is exceeded. In the next detection interval, a new MAC address move record will overwrite the earliest one generated in the previous detection interval. (IRF-incapable devices.)
Within a detection interval, an IRF member device can generate a maximum of 20 MAC address move records. The device deletes MAC address move records of other MAC addresses when the limit is exceeded. In the next detection interval, a new MAC address move record will overwrite the earliest one generated in the previous detection interval. (IRF-capable devices.)
# Enable MAC address move notifications.
<Sysname> system-view
[Sysname] mac-address notification mac-move
[Sysname]
%May 14 17:16:45:688 2013 Sysname MAC/4/MAC_FLAPPING: MAC address 0000-0012-0034 in VLAN 500 has moved from port GE1/0/1 to port GE1/0/2 for 1 times
· The VLAN ID of MAC address 0000-0012-0034 is VLAN 500.
· The MAC address moved from port GigabitEthernet 1/0/1 to port GigabitEthernet 1/0/2.
· The MAC address has moved once within a MAC move detection interval.
display mac-address mac-move
mac-address notification mac-move suppression (interface view)
Use mac-address notification mac-move suppression to enable MAC address move suppression on an interface.
Use undo mac-address notification mac-move suppression to restore the default.
Syntax
mac-address notification mac-move suppression
undo mac-address notification mac-move suppression
MAC address moves are not suppressed.
Layer 2 Ethernet interface view
Layer 2 aggregate interface view
network-admin
This feature shuts an interface down when a MAC address has been moved to or from the interface more than the suppression threshold within a MAC move detection interval. The shutdown interface automatically goes up after a suppression interval. Also, you can use the shutdown command and then the undo shutdown command to bring up the interface.
When MAC address move suppression shuts an interface down, the system sends only syslog messages to the information center module. If the snmp-agent trap enable mac-address command is also executed, the system also sends SNMP notifications to the SNMP module.
# Enable MAC address move suppression on GigabitEthernet 1/0/1.
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] mac-address notification mac-move suppression
Related commands
mac-address notification mac-move suppression (system view)
mac-address notification mac-move suppression (system view)
Use mac-address notification mac-move suppression to set the suppression interval or the suppression threshold.
Use undo mac-address notification mac-move suppression to restore the default.
Syntax
undo mac-address notification mac-move suppression { interval | threshold }
Default
The suppression interval is 30 seconds. The suppression threshold is 3.
Views
System view
Predefined user roles
network-admin
Parameters
interval interval-value: Sets the MAC address move suppression interval during which a suppressed interface stays down. The value range for the interval-value argument is 30 to 86400 seconds. If you do not specify this option, the default suppression interval of 30 seconds is used.
threshold threshold-value: Sets the suppression threshold for MAC address moves sourced from or destined for an interface within a MAC move detection interval. The value range for this argument is 0 to 1024. If you do not specify this option, the default suppression threshold of 3 is used.
Usage guidelines
For this command to take effect on an interface, you must also enable MAC address move suppression on the interface.
If you set the suppression interval or suppression threshold multiple times, the most recent configuration applies. The suppression interval setting is independent of the suppression threshold setting.
Examples
# Set the suppression interval to 40 seconds and the suppression threshold to 1 for MAC address moves.
[Sysname] mac-address notification mac-move suppression interval 40
[Sysname] mac-address notification mac-move suppression threshold 1
Related commands
mac-address notification mac-move suppression (interface view)
mac-address timer
Use mac-address timer to set the aging timer for dynamic MAC address entries.
Use undo mac-address timer to restore the default.
Syntax
mac-address timer { aging seconds | no-aging }
undo mac-address timer
Default
The aging timer is 300 seconds for dynamic MAC address entries.
Views
System view
Predefined user roles
network-admin
Parameters
aging seconds: Sets an aging timer (in seconds) for dynamic MAC address entries.
The following matrix shows the value ranges for the seconds argument:
|
Hardware series |
Model |
Value range |
|
WX1800H series |
WX1804H WX1810H WX1820H |
100 to 630: WX1804H 10 to 630: · WX1810H · WX1820H |
|
WX2500H series |
WX2510H WX2540H WX2560H |
10 to 630 |
|
WX3000H series |
WX3010H WX3010H-L WX3010H-X WX3024H WX3024H-L |
100 to 1400 |
|
WX3500H series |
WX3508H WX3510H WX3520H WX3540H |
10 to 630: WX3508H 100 to 1400: · WX3510H · WX3520H · WX3540H |
|
WX5500E series |
WX5510E WX5540E |
100 to 1400 |
|
WX5500H series |
WX5540H WX5560H WX5580H |
100 to 1400 |
|
Access controller modules |
EWPXM1WCME0 EWPXM2WCMD0F LSQM1WCMX20 LSQM1WCMX40 LSUM1WCME0 LSUM1WCMX20RT LSUM1WCMX40RT |
10 to 1400: · LSUM1WCME0 · EWPXM1WCME0 100 to 1400: · EWPXM1MAC0F · EWPXM2WCMD0F · LSQM1WCMX20 · LSQM1WCMX40 · LSUM1WCMX20RT · LSUM1WCMX40RT |
no-aging: Configures dynamic MAC address entries not to age.
Usage guidelines
To set the aging timer appropriately, follow these guidelines:
· A long aging interval causes the MAC address table to retain outdated entries and fail to accommodate the most recent network changes.
· A short aging interval results in removal of valid entries. Then, unnecessary broadcast packets appear and affect device performance.
Examples
# Set the aging time to 500 seconds for dynamic MAC address entries.
<Sysname> system-view
[Sysname] mac-address timer aging 500
Related commands
display mac-address aging-time
snmp-agent trap enable mac-address
Use snmp-agent trap enable mac-address to enable SNMP notifications for the MAC address table.
Use undo snmp-agent trap enable mac-address to disable SNMP notifications for the MAC address table.
Syntax
snmp-agent trap enable mac-address [ mac-move ]
undo snmp-agent trap enable mac-address [ mac-move ]
SNMP notifications are enabled for the MAC address table.
Views
network-admin
mac-move: Enables SNMP notifications about the MAC address moves for the MAC address table. If you do not specify this keyword, the command enables all types of SNMP notifications for the MAC address table.
Usage guidelines
When SNMP notifications are disabled for the MAC address table, MAC address moves are reported only in syslog messages.
The MAC address table supports only SNMP notifications about MAC address moves. When you enable or disable SNMP notifications about MAC address moves, you enable or disable all types of SNMP notifications for the MAC address table.
Examples
# Disable SNMP notifications about MAC address moves for the MAC address table.
<Sysname> system-view
[Sysname] undo snmp-agent trap enable mac-address mac-move
mac-address notification mac-move
