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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.
Configuration Roadmap
The configuration roadmap is as follows:
Create a VLAN to implement Layer 2 forwarding.
Configure a blackhole MAC address entry to filter out packets from the unauthorized PC.
Procedure
- 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 - 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
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