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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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Licensing Requirements and Limitations for MAC Address Tables

Licensing Requirements and Limitations for MAC Address Tables

Involved Network Elements

Other network elements are not required.

Licensing Requirements

The MAC address table is a basic feature of a switch and is not under license control.

Version Requirements

Table 2-6  Products and versions supporting MAC


Product Model

Software Version


S12708, S12712

V200R005C00, V200R006C00, V200R007C00, V200R007C20, V200R008C00, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00


V200R010C00, V200R011C10, V200R012C00, V200R013C00


V200R008C00, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00

For details about software mappings, visit Hardware Query Tool and search for the desired product model.

Feature Limitations

  • Dynamic MAC address entries can be learned on an interface only after the interface is added to an existing VLAN.
  • Among existing MAC address entries, only MAC addresses of the dynamic type can be overwritten as MAC addresses of other types.

  • Each static MAC address entry can have only one outbound interface.
  • ET1D2L16QX2H and ET1D2C08HX2H do not support aging of the MAC address entry of which the destination MAC address of packets is matched in mac-fib or enhanced-mac mode.
  • When the aging time of dynamic MAC address entries is set to 0, dynamic MAC address entries do not age. To age MAC address entries, delete the aging time configuration.
  • When MAC address learning is disabled in a VLAN and an interface in the VLAN (excluding X series cards) and the discard action is configured for the interface, the interface does not discard packets from this VLAN. For example, MAC address learning is disabled in VLAN 2 but enabled in VLAN 3; Port1 in VLAN 2 and VLAN 3 has MAC address learning disabled and the discard action is defined. In this situation, Port1 discards packets from VLAN 3 but forwards packets from VLAN 2.
  • When the interface frequently alternates between Up and Down, MAC address entries may be not aged within two aging period. At this time, you are advised to check the link quality or run the port link-flap protection enable command to configure link flapping protection.
Updated: 2019-01-18

Document ID: EDOC1100038103

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