#Railhead chaining and spanning tools software#

This extension provides for both rapid convergence and load balancing in a VLAN environment. MST extends the 802.1w Rapid Spanning Tree (RST) algorithm to multiple spanning trees. The MST feature is the IEEE 802.1s and is an amendment to 802.1Q. Refer to the Cisco Technical Tips Conventions for more information on document conventions. If your network is live, make sure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment.

#Railhead chaining and spanning tools software#

This document is created with the Cisco IOS Software Release 12.2(25) and CatOS 8.5(8), but the configuration is applicable to the minimum IOS version mentioned in the table.

The MST implementations in earlier Cisco IOS releases are prestandard. The MST implementations in earlier Cisco IOS releases are prestandard.Ĭatalyst 6500 (IOS): The MST implementation in Cisco IOS Release 12.2(18)SXF is based on the IEEE 802.1s standard.

Catalyst PlatformĬatalyst 4000, 2948G, and 2980G (Catalyst OS (CatOS))Ĭatalyst 3550/3560/3750: TheMST implementation in Cisco IOS Release 12.2(25)SEC is based on the IEEE 802.1s standard. This table shows the support of MST in Catalyst switches and the minimum software required for that support. Refer to Understanding Multiple Spanning Tree Protocol (802.1s) before you configure MST. This document provides a sample configuration to migrate the spanning tree mode from PVST+ to Multiple Spanning Tree (MST) in the campus network.