ZyXEL Communications PES-1014 Manual

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PES-1014 User’s Guide

STP 10-1

Chapter 10

STP

10.1 Introduction

Spanning Tree Protocol (STP) is IEEE standard (802.1d) that avoids looping in the network while maintaining

multiple Ethernet bridges. STP can avoid loops by placing ports in forwarding state or in blocking state to establish

redundant paths. When STP is enabled, the switch will execute STP Bridge Protocol Data Unit (BPDU) packets as

below:

• If the port is in Block-N-Listen State or Learning State, the BPDU packet is forwarded to the CPU, other

packets are discarded.

• If the port is in the Forwarding State, the BPDU packet is forwarded to the CPU, all other packets are normally

forwarded based on the switch engine decision.

Move the cursor over STP to bring up the following submenus.

10.2 Spanning Tree Configuration (Bridge) – (Switch

Parameters)

Move the cursor over the STP link and click Switch Parameters to display the Spanning Tree Configuration

(Bridge) screen shown next.

Figure 10-1 STP