Cabletron Systems 9E312, 9E423 !

Bridge Spanning Tree 3-17

9E312/9E423 Module Bridging

Changing Bridge Spanning Tree Parameters

The Bridge Spanning Tree window allows you to update the following

parameters for your 9E312/9E423 Module bridge. When you have ﬁnished

making changes to the following individual parameters, you must click on

at the bottom of the Spanning Tree window to write the changes to the

device.

Changing Bridge Priority

To change the part of the bridge address that contains the identiﬁer used in the

Spanning Tree Algorithm for priority comparisons:

1. Highlight the Bridge Priority ﬁeld.

2. Enter the new identiﬁer, in hexadecimal format; the allowed range is 0-FFFF

hexadecimal.

3. Click on .

The selected Bridge Priority will be applied to the bridge (a lower number

indicates a higher priority in the root selection process).

Changing the Spanning Tree Algorithm Protocol Type

To change the type of protocol used in Spanning Tree:

1. Click the mouse on the appropriate option button: 802.1, DEC, or NONE.

2. Click on .

The selected Spanning Tree Algorithm protocol type will be applied to the bridge.

If you selected None, the Spanning Tree Algorithm will be disabled (if it already

was enabled). If STA Protocol Type was changed from None to IEEE 802.1 or DEC,

you must restart the bridge for the newly selected STA protocol to be applied.

NOTE

Any values you set at the bridge will cause a Topology Change ﬂag to be issued in the next

Conﬁguration BPDUs it transmits. This will cause the bridged network to immediately

recalculate Spanning Tree and change topology accordingly.

!

CAUTION

All bridges in a network should use the same Spanning Tree version. Mixing Spanning

Tree Algorithm protocols will cause an unstable network.

Contents

Main i Notice Virus Disclaimer ii iii Restricted Rights Notice Page v Contents Chapter 2 The 9E312/9E423 Module View Chapter 1 Introduction Chapter 3 9E312/9E423 Module Bridging Index 1-1 Introduction versions 1-2 Using the 9E312 and 9E423 Users Guide Using the 9E312 and 9E423 Users Guide Related Manuals 1-3 Related Manuals Software Conventions Common 9E312 and 9E423 Window Fields Software Conventions 1-5 Using Buttons and Menus 1-6 Getting Help Getting Help Using On-line Help Getting Help from Cabletron Systems Technical Support 9E312 and 9E423 Firmware 1-7 9E312 and 9E423 Firmware Page Chapter 2 The 9E312/9E423 Module View 2-2 Viewing Module Information Viewing Module Information Viewing Module Information 2-3 Front Panel Information 2-4 Viewing Module Information Menu Structure Viewing Module Information 2-5 2-6 Viewing Module Information Viewing Module Information 2-7 The 9E312/9E423 Module Port Status Display The Chassis Manager Window Managing the Module 2-9 Viewing the Device Type Managing the Module Setting the Device Date and Time 2-10 Managing the Module Using the Find Source Address Feature 2-11 Enabling and Disabling Bridge Ports Using the Find Source Address Feature ! 2-12 I/F Summary Information I/F Summary Information I/F Summary Information 2-13 Interface Description Fields 2-14 I/F Summary Information Interface Performance Statistics/Bar Graphs I/F Summary Information 2-15 Interface Detail Window The 9E312/9E423 Module View 2-16 I/F Summary Information I/F Summary Information 2-17 2-18 I/F Summary Information Testing and Disabling the Current Interface I/F Summary Information 2-19 Using the Applications Pull-down menu Page Chapter 3 9E312/9E423 Module Bridging Bridging Basics 3-2 An Overview of Remote Bridge Management More on Transparent Bridging An Overview of Remote Bridge Management The Bridge Status Window 3-3 The Bridge Status Window 3-4 The Bridge Status Window Bridge Status Window Information Fields The Bridge Status Window 3-5 Accessing Other Management Options from the Bridge Status Window 3-6 Enabling and Disabling Bridging Enabling and Disabling Bridging Bridge Statistics Bridge Statistics 3-7 9E312/9E423 Module Bridging Performance Graphs 3-8 Bridge Statistics Bridge Statistics 3-9 The Interface Statistics Window 3-10 Bridge Statistics Bridge Spanning Tree 3-11 Bridge Spanning Tree 3-12 Bridge Spanning Tree Bridge Spanning Tree 3-13 Conguring the Bridge Spanning Tree Window Bridge Level Fields 3-14 Bridge Spanning Tree Bridge Spanning Tree 3-15 Bridge Port Level Fields 3-16 Bridge Spanning Tree Bridge Spanning Tree 3-17 Changing Bridge Spanning Tree Parameters ! 3-18 Bridge Spanning Tree Filtering Database 3-19 Filtering Database 3-20 Filtering Database Filtering Database 3-21 3-22 Filtering Database Filtering Database Window Fields Filtering Database 3-23 Conguring the Filtering Database 3-24 Filtering Database Filtering Database 3-25 3-26 Filtering Database Using Port Source Addressing Filtering Database 3-27 3-28 Duplex Modes Duplex Modes The Duplex Modes Window Duplex Modes 3-29 3-30 Duplex Modes Index-1 Index A B C D L M N P R