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Configuration Guide - Ethernet Switching

S1720, S2700, S5700, and S6720 V200R012(C00 and C20)

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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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 switch to match packets with certain characteristics and associate the traffic classifiers with the permit or deny behavior in a traffic policy. The switch then permits or rejects the packets matching the traffic classifiers. This technology implements flexible inter-VLAN isolation.

The switch supports inter-VLAN Layer 3 isolation based on MQC and ACL-based simplified traffic policies. For details about MQC and ACL-based simplified traffic policies, see MQC Configuration and ACL-based Simplified Traffic Policy Configuration in the S1720, S2700, S5700, and S6720 V200R012(C00&C20) Configuration Guide - QoS.

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Updated: 2018-12-24

Document ID: EDOC1100038339

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