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AR500, AR510, and AR530 V200R007 CLI-based Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring transparent bridge, MAC table, link aggregation, VLANs, STP/RSTP/MSTP, and so on.The document provides the configuration procedures and configuration examples to illustrate the service configuration methods and application scenario.
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Inter-VLAN Layer 3 Isolation

Inter-VLAN Layer 3 Isolation

After inter-VLAN Layer 3 connectivity is implemented between two VLANs, all users in the VLANs can communicate. In some scenarios, communication between some users needs to be prevented or only unidirectional communication is allowed. For example, user hosts and servers often use unidirectional communication, and visitors to an enterprise are often allowed to access only the Internet or some servers. In these scenarios, you need to configure inter-VLAN isolation.

Inter-VLAN isolation is often implemented using a traffic policy. You can define traffic classifiers on a device to match packets with certain characteristics and associate the traffic classifiers with the permit or deny behavior in a traffic policy. The device then permits or rejects the packets matching the traffic classifiers. This technology implements flexible inter-VLAN isolation.

The device supports inter-VLAN Layer 3 isolation based on MQC and simplified ACL-based traffic policies. For details about MQC and simplified ACL-based traffic policies, see MQC Configuration and ACL-based Simplified Traffic Policy Configuration in Huawei AR Series IOT Gateway Configuration Guide - QoS.

Updated: 2019-05-25

Document ID: EDOC1000097279

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