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AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009 CLI-based Configuration Guide - Ethernet Switching

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Example for Configuring Blackhole MAC Address Entries

Example for Configuring Blackhole MAC Address Entries

Networking Requirements

As shown in Figure 1-8, the Router 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 Router filters out packets from the unauthorized PC.

Figure 1-8  Networking for configuring a blackhole MAC address entry

Configuration Roadmap

The configuration roadmap is as follows:

  1. Create a VLAN to implement 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 Router
    [Router] vlan 3
    [Router-vlan3] quit
    

    # Configure a blackhole MAC address entry.

    [Router] 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.

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

Configuration Files

Router configuration file

#
 sysname Router
#
vlan batch 3
#
mac-address blackhole 0005-0005-0005 vlan 3                                     
#
return
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Updated: 2019-05-17

Document ID: EDOC1000174108

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