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S12700 V200R012C00 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Example for Configuring MAC Address Limiting on an Interface

Example for Configuring MAC Address Limiting on an Interface

Networking Requirements

In Figure 2-15, user network 1 and user network 2 connect to the Switch through the LSW, and the LSW connects to the Switch through GE1/0/1. User network 1 and user network 2 belong to VLAN 10 and VLAN 20 respectively. On the Switch, MAC address limiting can be configured on GE1/0/1 to control the number of access users.

Figure 2-15  Configuring MAC address limiting on an interface

Configuration Roadmap

The configuration roadmap is as follows:

  1. Create VLANs and add the downlink interface to the VLANs to implement Layer 2 forwarding.

  2. Configure MAC address limiting on the interface to control the number of access users.


  1. Configure MAC address limiting.

    # Create VLAN 10 and VLAN 20, and add GigabitEthernet1/0/1 to VLAN 10 and VLAN 20.

    <HUAWEI> system-view
    [HUAWEI] sysname Switch
    [Switch] vlan batch 10 20
    [Switch] interface gigabitethernet 1/0/1
    [Switch-GigabitEthernet1/0/1] port link-type hybrid
    [Switch-GigabitEthernet1/0/1] port hybrid tagged vlan 10 20

    # Configure a MAC address limiting rule on GigabitEthernet1/0/1: A maximum of 100 MAC addresses can be learned on the interface. When the number of learned MAC address entries reaches the limit, the Switch discards the packets with new source MAC addresses and generates an alarm.

    [Switch-GigabitEthernet1/0/1] mac-limit maximum 100 action discard alarm enable
    [Switch-GigabitEthernet1/0/1] return

  2. Verify the configuration.

    # Run the display mac-limit command in any view to check whether the MAC address limiting rule is successfully configured.

    <Switch> display mac-limit
    MAC limit is enabled                                                            
    Total MAC limit rule count : 1                                                  
    PORT                 VLAN/VSI         SLOT Maximum Rate(ms) Action  Alarm       
    GE1/0/1              -                -    100     -        discard enable      

Configuration Files

Switch configuration file

sysname Switch
vlan batch 10 20
interface GigabitEthernet1/0/1
 port link-type hybrid
 port hybrid tagged vlan 10 20
 mac-limit maximum 100
Updated: 2019-01-18

Document ID: EDOC1100038103

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