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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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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 AR650&AR1600&AR6100 Series Routers Configuration Guide - QoS.

Updated: 2019-04-12

Document ID: EDOC1100041791

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