display mac-address static

Function

The display mac-address static command displays static MAC address entries.

Format

display mac-address static [ vsi vsi-name ] [ verbose ]

display mac-address static [ vlan vlan-id | interface-type interface-number ] ^* [ verbose ]

Parameters

Parameter	Description	Value
vlan vlan-id	Displays static MAC address entries in a specified VLAN.	The value is an integer that ranges from 1 to 4094.
vsi vsi-name	Displays static MAC address entries in a specified VSI. vsi-name specifies the name of a VSI. NOTE: Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H support this parameter.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
interface-type interface-number	Displays the static MAC address entries on a specified interface.	-
verbose	Displays detailed information about static MAC address entries.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

The MAC address table of the switch stores MAC addresses of other devices. When forwarding an Ethernet frame, the switch searches the MAC address table for the outbound interface according to the destination MAC address and VLAN ID in the Ethernet frame.

The MAC address table contains the following MAC address entries:

Static MAC entries that are manually configured and will not be aged out.
Blackhole MAC address entries that are used to discard packets with the specified source MAC addresses or destination MAC addresses. Blackhole MAC address entries are manually configured and will not be aged out.
Dynamic MAC address entries that are learned by the switch and will be aged out when the aging time expires.

To improve network security, configure static MAC address entries to ensure that packets destined for specified MAC addresses are forwarded by the specified interfaces. This prevents attack packets with bogus MAC addresses and guarantees communication between the switch and the upstream device or server. After configuring static MAC address entries, you can run the display mac-address static command to verify the configuration.

Follow-up Procedure

If any static MAC address entry is incorrect, run the undo mac-address command to delete it.

Precautions

If you run the display mac-address static command without parameters, all static MAC address entries are displayed.

If the MAC address table does not contain any static MAC address entry, no information is displayed.

Example

# Display all static MAC address entries.

<HUAWEI> display mac-address static
------------------------------------------------------------------------------- 
MAC Address          VLAN/VSI/BD                 Learned-From        Type       
-------------------------------------------------------------------------------
0000-0000-0033       100/-/-                     GE0/0/1           static 
0000-0000-0001       200/-/-                     GE0/0/2           static 

-------------------------------------------------------------------------------
Total items displayed = 2

# Display detailed information about all static MAC address entries in VLAN 10.

<HUAWEI> display mac-address static vlan 10 verbose
------------------------------------------------------------------------------- 
MAC Address : 0000-0000-0001            VLAN : 10                            
Learned-From: GE0/0/1                   Type : static                        
                                                                                
------------------------------------------------------------------------------- 
Total items displayed = 1

**Table 1** Description of the display mac-address static command output
Item	Description
MAC Address	Destination MAC address in a static MAC address entry.
VLAN/VSI/BD	ID of the VLAN, or name of the VSI, or ID of the BD that a MAC address belongs to.
Learned-From	Interface that learns a MAC address.
Type	Type of a MAC address entry. static: indicates a static MAC address entry, which is manually configured and will not be aged out, configured by using the mac-address static vlan, mac-address static vlanif, mac-address static vsi, mac-address static bridge-domain, or mac-address static bridge-domain vni command.