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S12700 V200R010C00 Configuration Guide - Ethernet Switching

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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Do VLANs Need to Be Assigned on the Intermediate Device That Transparently Transmits Packets?

Do VLANs Need to Be Assigned on the Intermediate Device That Transparently Transmits Packets?

Figure 4-40  Layer 2 device networking
As shown in Figure 4-40, the switch has been configured to transparently transmit Layer 2 packets. Do VLANs need to be assigned?
  • If Switch1 and Switch2 where VLANs are not assigned use default VLAN configuration, VLANs do not need to be assigned on the switch.
  • If VLANs are assigned on Switch1 and Switch2, VLANs need to be assigned on the switch.

    For example, GE1/0/1 interfaces connecting Switch1 and Switch2 to the switch transparently transmit packets from VLAN 10 and VLAN 20, so GE1/0/2 and GE1/0/3 on the switch need be configured to transparently transmit packets from VLAN 10 and VLAN 20. Perform the following configurations.

    [HUAWEI] vlan batch 10 20
    [HUAWEI] interface gigabitethernet 1/0/2
    [HUAWEI-GigabitEthernet1/0/2] port link-type trunk
    [HUAWEI-GigabitEthernet1/0/2] port trunk allow-pass vlan 10 20
    [HUAWEI-GigabitEthernet1/0/2] quit
    [HUAWEI] interface gigabitethernet 1/0/3
    [HUAWEI-GigabitEthernet1/0/3] port link-type trunk
    [HUAWEI-GigabitEthernet1/0/3] port trunk allow-pass vlan 10 20
    
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Updated: 2019-08-21

Document ID: EDOC1000142081

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