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CLI-based Configuration Guide - Ethernet Switching

AR650, AR1600, and AR6100 V300R003

This document describes how to configure the components for LAN services, including link aggregation groups, VLANs, voice VLANs, MAC address tables, transparent bridging, as well as GVRP, STP/RSTP, and MSTP protocols.
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Licensing Requirements and Limitations for VLANs

Licensing Requirements and Limitations for VLANs

Involved Network Elements


Licensing Requirements

VLAN is a basic feature of a router and is not under license control.

Feature Limitations

When deploying VLAN on the router, pay attention to the following:

  • You are advised to plan service and management VLANs so that any broadcast storms in service VLANs do not affect device management.
  • In practice, specify VLANs from which packets need to be transparently transmitted by a trunk interface. Do not use the port trunk allow-pass vlan all command if possible.
  • All interfaces join VLAN 1 by default. When unknown unicast, multicast, or broadcast packets of VLAN 1 exist on the network, broadcast storms may occur. When VLAN 1 is used, pay attention to the following points:
    • Remove the interfaces that do not need to join VLAN 1 from VLAN 1 to prevent loops.
    • You are advised to remove interfaces from VLAN 1 in Eth-Trunk or ring networking.
    • When connecting to an access device, to prevent broadcast storms in VLAN 1, do not configure the uplink interface of the access device to transparently transmit packets from VLAN 1.
Updated: 2019-04-12

Document ID: EDOC1100041791

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