Chapter 13 Spanning Tree Protocol

Note: Each port can belong to one STP tree only.

Figure 65 MRSTP Network Example

13.1.5 Multiple STP

Multiple Spanning Tree Protocol (IEEE 802.1s) is backward compatible with STP/ RSTP and addresses the limitations of existing spanning tree protocols (STP and RSTP) in networks to include the following features:

One Common and Internal Spanning Tree (CIST) that represents the entire network’s connectivity.

Grouping of multiple bridges (or switching devices) into regions that appear as one single bridge on the network.

A VLAN can be mapped to a specific Multiple Spanning Tree Instance (MSTI). MSTI allows multiple VLANs to use the same spanning tree.

Load-balancing is possible as traffic from different VLANs can use distinct paths in a region.

13.1.5.1MSTP Network Example

The following figure shows a network example where two VLANs are configured on the two switches. If the switches are using STP or RSTP, the link for VLAN 2 will be

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ZyXEL Communications metrogigabit switch manual Multiple STP, 150, Mstp Network Example

metrogigabit switch specifications

ZyXEL Communications has long been a prominent player in the networking hardware industry, providing innovative solutions that cater to both business and consumer markets. Among their notable offerings is the Metrogigabit switch, a device designed to meet the high demands of modern networks.

The ZyXEL Metrogigabit switch is primarily aimed at service providers and large enterprises, recognizing the need for seamless connectivity in an increasingly digital world. This switch is engineered for scalability, enabling users to effortlessly expand their network as their operational needs grow. With support for high bandwidth, it is particularly suited for environments requiring extensive data traffic management, such as data centers and campus networks.

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In terms of technology, the Metrogigabit switch leverages advanced Layer 2 and Layer 3 functionalities. This includes features such as VLAN support for traffic segmentation, Quality of Service (QoS) for prioritizing mission-critical applications, and robust multicast management. These capabilities contribute to enhanced network efficiency and performance.

Another characteristic that sets the ZyXEL Metrogigabit switch apart is its built-in security features. The device is designed to protect network integrity through mechanisms like port security, access control lists, and advanced authentication protocols. This focus on security helps prepare businesses to counteract potential threats in a landscape where cyber attacks are increasingly sophisticated.

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