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S12700 V200R010C00 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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Example for Configuring Blackhole MAC Address Entries

Example for Configuring Blackhole MAC Address Entries

Networking Requirements

In Figure 2-14, the Switch receives packets from an unauthorized PC that has the MAC address of 0005-0005-0005 and belongs to VLAN 3. This MAC address entry can be configured as a blackhole MAC address entry so that the Switch filters out packets from the unauthorized PC.

Figure 2-14  Example network for configuring a blackhole MAC address entry

Configuration Roadmap

The configuration roadmap is as follows:

  1. Create a VLAN for Layer 2 forwarding.

  2. Configure a blackhole MAC address entry to filter out packets from the unauthorized PC.

Procedure

  1. Configure a blackhole MAC address entry.

    # Create VLAN 3.

    <HUAWEI> system-view
    [HUAWEI] sysname Switch
    [Switch] vlan 3
    [Switch-vlan3] quit
    

    # Configure a blackhole MAC address entry.

    [Switch] mac-address blackhole 0005-0005-0005 vlan 3
    

  2. Verify the configuration.

    # Run the display mac-address blackhole command in any view to check whether the blackhole MAC address entry is successfully added to the MAC address table.

    [Switch] display mac-address blackhole
    ------------------------------------------------------------------------------- 
    MAC Address    VLAN/VSI                          Learned-From        Type       
    ------------------------------------------------------------------------------- 
    0005-0005-0005 3/-                               -                   blackhole  
                                                                                    
    ------------------------------------------------------------------------------- 
    Total items displayed = 1
    
    

Configuration Files

Switch configuration file

#
sysname Switch
#
vlan batch 3
#
mac-address blackhole 0005-0005-0005 vlan 3                                     
#
return
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Updated: 2019-08-21

Document ID: EDOC1000142081

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