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Configuration Guide - Ethernet Switching

S7700 and S9700 V200R011C10

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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Application Scenarios for VLAN Switch

Application Scenarios for VLAN Switch

On the network shown in Figure 6-1, PC1 in VLAN 2 and PC2 in VLAN 3 need to communicate with each other.

Figure 6-1  Using VLAN Switch to implement inter-VLAN communication

Switch-vlan can be configured on SwitchA to implement inter-VLAN communication. After switch-vlan is configured, user packets are forwarded along the specified path. SwitchA is configured to change VLAN 2 in packets received by Port2 to VLAN 3 and send them through Port3, and to change VLAN 3 in packets received by Port3 to VLAN 2 and send them through Port2. In this manner, switch-vlan implements communication between VLAN 2 and VLAN 3.


If SwitchA is a Layer 3 switch, you can also use a VLANIF interface to implement inter-VLAN communication. If SwitchA is a Layer 2 switch, you can only use switch-vlan to implement inter-VLAN communication.

Updated: 2019-10-18

Document ID: EDOC1000178310

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