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NE40E-M2 V800R010C10SPC500 Feature Description - LAN Access and MAN Access 01

This is NE40E-M2 V800R010C10SPC500 Feature Description - LAN Access and MAN Access
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Application of MSTP

Application of MSTP

Multiple Spanning Tree Protocol (MSTP) allows packets in different VLANs to be forwarded by using different spanning tree instances, as shown in Figure 10-17. The configurations are as follows:

  • All devices on the network belong to the same Multiple Spanning Tree (MST) region.

  • VLAN 10 packets are forwarded within MSTI 1; VLAN 30 packets are forwarded within MSTI 3; VLAN 40 packets are forwarded within MSTI 4; VLAN 20 packets are forwarded within MSTI 0.

On the network shown in Figure 10-17, Device A and Device B are aggregation-layer devices, and Device C and Device D are access-layer devices. VLAN 10 and VLAN 30 are terminated on aggregation-layer devices, and VLAN 40 is terminated on an access-layer device. Therefore, Device A and Device B can be configured as the roots of instances 1 and 3 respectively; Device C can be configured as the root of instance 4.

Figure 10-17 Networking diagram for a typical MSTP application

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Updated: 2019-01-02

Document ID: EDOC1100058405

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