Netgear GSM7352Sv1 7000 Series Managed Switch Administration Guide for Softwar - Page 333
Spanning Tree Protocol, Con Classic STP (802.1d)
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NETGEAR 7000 Series Managed Switch Administration Guide Version 7.3 Chapter 26 Spanning Tree Protocol In this chapter, the following examples are provided: • "Configure Classic STP (802.1d)" • "Configure Rapid STP (802.1w)" on page 26-3 • "Configure Multiple STP (802.1s)" on page 26-4 The purpose of spanning tree is to eliminate the loops in the switch system. There are three STPs: Classic STP (802.1d), Rapid STP (RSTP, 802.1w), and Multiple STP (MSTP, 802.1s). While STP can take 30 to 50 seconds to respond to a topology change, RSTP is typically able to respond to changes within a few seconds. RSTP can revert back to 802.1d in order to interoperate with legacy bridges on a per-port basis. This drops the benefits it introduces. In Multiple Spanning Tree Protocol (MSTP), each Spanning-Tree instance can contain several VLANs. Each Spanning-Tree instance is independent of other instances. This approach provides multiple forwarding paths for data traffic, enabling load balancing, and reducing the number of Spanning-Tree instances required to support a large number of VLANs. Configure Classic STP (802.1d) The example is shown as CLI commands and as a Web interface procedure. CLI: Configuring Classic STP (802.1d) (Netgear Switch) (Config)# spanning-tree (Netgear Switch) (Config)# spanning-tree forceversion 802.1d (Netgear switch) (Interface 1/0/3)# spanning-tree port mode Web Interface:Configuring Classic STP (802.1d) To use the Web interface to configure the managed switch, proceed as follows: 1. Enable 802.1d on the switch. Spanning Tree Protocol v1.0, November 2008 26-1