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Cabletron Systems NB30 User Manual

Local management for the cabletron systems nb30 bridge
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NB30/LM
LOCAL MANAGEMENT
FOR THE CABLETRON SYSTEMS
NB30 BRIDGE
USER'S MANUAL
CABLETRON SYSTEMS, P.O. BOX 5005, ROCHESTER, NH 03867-5005

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Summary of Contents for Cabletron Systems NB30

  • Page 1 NB30/LM LOCAL MANAGEMENT FOR THE CABLETRON SYSTEMS NB30 BRIDGE USER’S MANUAL CABLETRON SYSTEMS, P.O. BOX 5005, ROCHESTER, NH 03867-5005...
  • Page 3 All Rights Reserved Printed in the United States of America Order Number: 9030290 June 91 NB30/LMm NB30, SPIM-T, SPIM-T1, SPIM-F1, SPIM,F2, SPIM-C, and SPIM-A are trademarks of Cabletron Systems Inc. DEC, LAN Bridge 100, and VT are trademarks of Digital Equipment Corporation.
  • Page 4 NOTICE...

  • Page 5: Table Of Contents

    CHAPTER 1 INTRODUCTION USING THIS MANUAL ... 1-1 GETTING HELP ... 1-2 NB30/LM LOCAL MANAGEMENT FOR THE CABLETRON SYSTEMS NB30 ... 1-2 RELATED MANUALS... 1-3 CHAPTER 2 GETTING STARTED TERMINAL CONFIGURATION ... 2-1 2.1.1 VT200 or 300 Series Setup ... 2-1 2.1.2...
  • Page 6 CONTENTS THE SAVE NAMES OPTION...5-21 THE PORT COUNTERS OPTION ...5-22 5.3.1 The Bridge Counters Screen...5-23 5.3.1.1 5.3.2 The Network Errors Option...5-24 5.3.2.1 THE FILTERING DATABASE OPTION ...5-26 5.4.1 The Filtering Database Screen...5-28 5.4.1.1 5.4.1.2 5.4.1.3 5.4.1.4 5.4.1.5 5.4.1.6 5.4.1.7 5.4.2 The Special Database Option ...5-38 5.4.2.1 5.4.2.2...

  • Page 7: Chapter 1 Introduction

    Chapter 3, Using Local Management for Cabletron Systems' NB30, provides general screen information and general tips for using Local Management for the NB30. A Menu Tree is included to help you get around Local Management. Chapter 4, Bridge Information Screen, discusses the Bridge Information Screen fields and provides an overview of the options available at this...

  • Page 8: Getting Help

    GETTING HELP If you need additional support related to Cabletron Systems' Local Management for the NB30, or if you have any questions, comments, or suggestions concerning this manual or any of our other networking products, feel free to contact Cabletron Systems' Technical Support at: Cabletron Systems P.O.

  • Page 9: Related Manuals

    If two SPIMs are installed in the NB30, Local Management allows you to switch the SPIM that is communicating with the network or to set one of the SPIMs to act as a redundant data path.
  • Page 10 INTRODUCTION...

  • Page 11: Chapter 2 Getting Started

    TERMINAL CONFIGURATION Local Management for the NB30 is accessed through a VT™ 200 or 300 series or a PRIME™ 200 series terminal, or terminals running emulation programs for these series of terminals. The terminal or emulating terminal is attached to the port labeled CONSOLE on the bridge.

  • Page 12: Prime 200 Series Setup

    GETTING STARTED General Set-up Menu Mode Cursor Keys Communications Set-up Menu Transmit Receive XOFF Parity Stop Bit Local Echo Port Transmit Auto Answerback Keyboard Set-up Menu Keys Auto Repeat Keyclick Margin Bell Warning Bell Auto Answerback 2.1.2 Prime 200 Series Setup If you have a PRIME 200 series terminal, press SETUP to access the Setup Directory.

  • Page 13: Cable Configuration

    Transmission Keyboard Repeat Rate N-key Rollover Margin Bell Volume Key Click Volume Scroll Speed Kybd Char Menu Online/Local Host Stop Bits Aux Stop Bits Host Baud Rate Host Parity Aux Baud Rate Aux Parity CABLE CONFIGURATION Local Management is accessed by an RS232 cable available from Cabletron Systems.

  • Page 14: Prime 200 Series

    GETTING STARTED 9 Pin Male Connector (Bridge End) Pin 3 (Receive) Pin 2 (Transmit) Pin 5 (Ground) Pin 7 (Request to Send) Pin 8 (Clear to Send) 2.2.2 Prime 200 Series 9 Pin Male Connector (Bridge End) Pin 3 (Receive) Pin 2 (Transmit) Pin 5 (Logic Ground) Pin 8 (Clear to Send)
  • Page 15 “Invalid Password Entered” will appear on the screen. When the correct password is entered, the Bridge Information Screen, Figure 2-3, will appear on the terminal. Local Management for the NB30 is now ready for operation. (C) Cabletron Systems, Inc. 1991 TERMINAL TYPE MENU 1.
  • Page 16 BRIDGE INFORMATION 01 Hours 33 Minutes Remote Port REMOTE PORT RS449 LINK ON/DCE READY REMOTE LINK Remote I.D. 00-00-1D-00-36-B8 Remote STA Mode: PRIMARY Local STA Mode: PORT COUNTERS BRIDGE PROTOCOL Type: NB30 SW Version: 1.10.00 HW Version: 1 SECONDARY EXIT SETUP...

  • Page 17: Chapter 3 Using Local Management For The Nb30

    GENERAL SCREEN INFORMATION Similar descriptive Information is displayed in the upper portion of all Local Management for the NB30 screens. A list of these common fields is provided here for your convenience. Network Address: Displays the Ethernet address of the bridge in a hexadecimal format (XX-XX-XX-XX-XX-XX).

  • Page 18: General Tips

    LOCAL MANAGEMENT MENU TREE The Bridge Information Screen is at the top of the Local Management for the NB30 menu tree. All the screens that manage and control the bridge are accessed through this screen. From the Bridge Information Screen, the menu branches out.
  • Page 19 CREATE DISPLAY RANGE DISPLAY RANGE FILTERING DATABASE RETURN DISPLAY RANGE FILTERING DATABASE RETURN DISPLAY RANGE Figure 3-1 Local Management for the NB30 Menu Tree USING LOCAL MANAGEMENT BRIDGE BRIDGE SETUP BRIDGE PROTOCOL PARAMETERS EXECUTE RETURN PORT SETUP SAVE CHANGE PASSWORD...
  • Page 20 USING LOCAL MANAGEMENT...

  • Page 21: The Bridge Information Screen

    BRIDGE INFORMATION SCREEN The Bridge Information Screen of Local Management for the NB30 is the main screen from which all bridge management options are accessed. This screen also provides descriptive information about the bridge and the network traffic passing through it.

  • Page 22: Selecting The Ethernet Port

    4.1.1 Selecting the Ethernet Port If two SPIMs are installed in the NB30, you can select the Ethernet Port for which the Bridge Information Screen will display status information . To select which Ethernet Port will be displayed on the Bridge Information Screen: 1.
  • Page 23 Port Type: Indicates the mode used by the port. (Enet Port 1 will always have one of the listed SPIMs installed. Enet Port 2 is an optional port, and SPIMs can be ordered upon customer request.) The Enet Port 1 and Enet Port 2 (if installed) type is 802.3 (Ethernet) with the following interface modules: SPIM-T™...
  • Page 24 For other SPIMs, this message may indicate that the SPIM is not properly installed in the NB30. If a SPIM-T, SPIM-T1, SPIM-F1 or SPIM-F2 is installed in the port, this message indicates that the link between the port and the Ethernet device has failed.
  • Page 25 Indicates that the port is ready for transmission. Indicates that the Remote port is not receiving any signal, probably due to an unplugged cable . the receive link of the NB30 on the other side of the Remote link. Indicates a loss of synchronization has occurred on the receive link of the bridge.
  • Page 26 Remote STA Mode: Displays the Spanning Tree Algorithm mode that the NB30 at the other end of the Remote link is operating in. The NB30 at the other end of the link will be operating in one of the following modes: Primary...

  • Page 27: Availability Options

    Primary Indicates that the NB30 is acting as the primary bridge, generating BPDUs for determining the bridge's position in the network. Secondary Indicates that the NB30 is acting as the secondary bridge, passing BPDUs, for determining the bridge's position in the network.
  • Page 28 IP Address, or the screen refresh time for the bridge. The new values for these fields must be manually entered. From the Port Setup option you can also set up the NB30's Redundancy feature, and DSX-1 parameters if one is installed. This option is explained in Section 5.1.

  • Page 29: Chapter 5 Using Bridge Management Options

    Bridge Protocol Selection of this option allows you to display the protocol parameters for the NB30 as they relate to the Spanning Tree Algorithm. With this option, you can also update or change certain protocol parameters. When the NB30 is the root bridge, or is attempting to become the root, parameter...
  • Page 30 BRIDGE INFORMATION SCREEN 4-10...
  • Page 31 USING BRIDGE MANAGEMENT OPTIONS All available options in Local Management for the NB30 are initiated from the Bridge Information Screen, Figure 5-1. In this chapter, each option is explained. The screen displays are arranged in sequence with the options selected.

  • Page 32: The Setup Option

    BRIDGE SETUP 01 Hours 33 Minutes Reset Counters: Disable Bridge: Disable Bridge: 08/01/90 Set Time: 0.0.0.0 Set Refresh Time: 2 IEEE Restarts: PORT SETUP Last Reset: 06/11/91 07:10:00 Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE 12:47:22 CHANGE PASSWORD...

  • Page 33: Setup Option Screen Fields

    5.1.1 Setup Option Screen Fields This section lists the Setup Screen fields and provides instructions for editing these fields. Restore Default Settings: Indicates if the following will be reset to their default values: • Bridge Name back to CABLETRON REMOTE BRIDGE. •...
  • Page 34 Type of STA Protocol: Indicates the Spanning Tree Algorithm Protocol under which the NB30 is operating. The NB30 can operate in: •...

  • Page 35: Editing The Setup Screen Fields

    Editing the Setup Screen Fields Restoring the NB30 Default Settings To restore the NB30 to its default settings: 1. Using the arrow keys, highlight the Restore Default Settings field. 2. Press the Return key until the YES selection appears. The Restore Default Settings field is a toggle field that alternately displays YES and NO when you press Return.
  • Page 36 USING BRIDGE MANAGEMENT OPTIONS 3. Highlight the EXECUTE option at the bottom of the Bridge Setup Screen. 4. Press Return. The content of the Permanent Database, excluding the 17 reserved multicast addresses placed in the database on bridge power up, will be erased.
  • Page 37 3. Press Return. 4. Highlight the EXECUTE option at the bottom of the Bridge Setup Screen. 5. Press Return. The indicated date will become the new date setting. Setting the IP Address To set the IP Address: 1. Using the arrow keys, highlight the Set IP Address field. 2.
  • Page 38 USING BRIDGE MANAGEMENT OPTIONS The selected Spanning Tree Algorithm Type will be applied to the bridge. If NONE was selected, the Spanning Tree Algorithm will be disabled (if it was already enabled). If STA Protocol Type was changes from NONE to either IEEE or DEC, the bridge must be restarted, using the Restart Bridge option, for the selected STA protocol to be applied to the bridge.
  • Page 39 Restarting the Bridge To restart the bridge: 1. Using the arrow keys, highlight the Restart Bridge field. 2. Press the Return key until the YES selection appears. The Restart Bridge field is a toggle field that alternately displays YES and NO when you press Return.

  • Page 40: The Change Password Option

    With the Port Setup Option, you can view the status of the switches in the front and rear panel of the NB30. If two SPIMs are installed in the NB30, this option allows you to switch the SPIM that is communicating with the network or to set one of the SPIMs to act as a redundant data path.
  • Page 41 SPIM Port Setup Screen If a DSX-1 is not installed in the NB30, refer to Figure 5-3 a. With two SPIMs installed in the NB30, the screen will appear as shown in Figure 5-3 a. This screen displays switch and port information on the left side of the screen and redundancy information on the right side of the screen.

  • Page 42: Port Setup Screen Fields

    Switch on the back panel of the NB30. (See the NB30 Ethernet Bridge User's Manual for more information.) OFF means that the NB30 will force Data Mode true and ignore the Data Mode Control Signal from the DCE. ON means that the NB30 will require the Data Mode Control Signal from the DCE.
  • Page 43 USING BRIDGE MANAGEMENT OPTIONS DSX-1 Config A-1: T-1 Timing Mode Indicates the mode of the transmit clock for the NB30 equipped with a DSX-1 module. The T1 Timing Mode is set by switching the Config A-1 switch on the back panel of the NB30. (See the NB30 Ethernet Bridge User's Manual for more information.)
  • Page 44 Spanning Tree Algorithm. (Only one bridge on the network should have the Root switch enabled.) The Root is set by switching the ROOT switch on the front panel of the NB30. (See the NB30 Ethernet Bridge User’s Manual for more information.) OFF means that the Root Switch is disabled.

  • Page 45: Setting The Default Enet Port Option

    5.1.4.2 Setting the Default Enet Port Option If two SPIMs are installed in the NB30, Local Management allows you to set which Ethernet port is communicating with the network. To set which port will be the default Ethernet port for communicating with the Ethernet Network: 1.

  • Page 46: Setting The Redundancy Option

    Figure 5-4 illustrates a sample redundancy configuration. An NB30 with two SPIM-Ts is connected to the network. Ethernet Port 1 on the NB30 is connected to MMAC 2 and is acting as the primary data path. Ethernet Port 2 is connected to MMAC 1 and will be acting as the redundant data path.
  • Page 47 3. Highlight the Port 1 Poll Address field. 4. Enter the Ethernet address of the Repeater Module installed in the MMAC 2 in a hex XX-XX-XX-XX-XX-XX format. 5. Press Return. If the Ethernet address was entered in an improper hex format, the message "Illegal Ethernet Address Entered"...

  • Page 48: The Dsx-1 Setup Option

    MMAC 2 through Ethernet Port 1. 5.1.4.4 The DSX-1 Setup Option If you have a DSX-1 module installed in your NB30, you can configure the setup and operation of the T1 link connection. To do so: 1. Highlight the DSX-1 SETUP option button at the bottom of the Port Setup Screen.
  • Page 49 T1 connection to the NB30. To do so: NOTE: When you assign channels on a T1 link, you must set the channels on both NB30's of a pair to the same settings. 1. Use the Up and Down arrow keys to highlight the desired channel number.
  • Page 50 USING BRIDGE MANAGEMENT OPTIONS NOTE: The following two commands initiate a loopback test, illustrated in Fig. 5-6. The channel configuration and the test pattern should not be changed during a loopback test. REMOTE NB30 LOCAL NB30 FAR END LOOP NET LOOP...

  • Page 51: The Save Names Option

    Loop Status Shows the current condition of the DSX-1 port. The current status conditions are: • Not in Loopback - The DSX-1 port is currently not performing a loopback test and is in normal operating condition. • Remote Loopback in Progress - A loopback test is currently in progress.

  • Page 52: The Port Counters Option

    2. Press Return. The Bridge Information Screen with the Save Names option will appear. See Figure 5-1. If two SPIMs are installed in the NB30, you can select which Ethernet Port the Bridge Information Screen will display. You can also assign names to each individual Ethernet port and network.

  • Page 53: The Bridge Counters Screen

    Transmissions Aborted: Out of Window Collisions: CRC Errors: Frame Alignment Errors: Figure 5-7 Bridge Counters Screen USING BRIDGE MANAGEMENT OPTIONS NETWORK ERRORS 0 Hours 2 Minutes Ethernet RETURN Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Remote 5-23...

  • Page 54: Bridge Counters Screen Fields

    USING BRIDGE MANAGEMENT OPTIONS 5.3.1.1 Bridge Counters Screen Fields Frames Received: Displays the number of frames received at the port. Discard Inbound: Displays the total number of valid frames that were received at the Ethernet port but then filtered by the bridge. Not applicable for the Remote port.

  • Page 55: Network Errors Screen Fields

    Indicates the number of collisions out of the standard collision window (51.2 sec) due to a network problem. Not applicable for the Remote port. USING BRIDGE MANAGEMENT OPTIONS NETWORK ERRORS 0 Hours 2 Minutes Ethernet RETURN Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Remote 5-25...

  • Page 56: The Filtering Database Option

    See Figure 5-9. The Permanent Database This contains addresses that remain in the Source Address Table when the system is shut down. With Local Management for the NB30, the network manager can add to or delete from this database. The Acquired Database This consists of address entries that accumulate as part of the Filtering Database while the bridge is up and running.
  • Page 57 DYNAMIC ACQUIRED DATABASE = PERMANENT DATABASE = 8191 FILTERS TOTAL SPECIAL FILTERING DATABASE 10 SPECIAL FILTERS BOTH 802.1 AND SPECIAL FILTERING DATABASES 10 SPECIAL FILTERS SPECIAL DATABASE ACQUIRED PERMANENT DATABASE Figure 5-9 The Filtering Database The Special Database This database allows you to add filters that will screen packets according to four parameters: destination address, source address, type (protocol), and data field.

  • Page 58: The Filtering Database Screen

    Figure 5-10 Filtering Database Screen 5-28 FILTERNING DATABASE 0 Hours 2 Minutes Max Entries: 8191 None DELETE ENTRY DISPLAY ENTRY SPECIAL DATABASE Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Permanent Database Max Entries: 2047 Current Entries: 17 DISPLAY RANGE...

  • Page 59: Acquired And Permanent Database Screen Fields

    At this screen, you cannot edit data in any field with the exception of the Ageing Time field for the Acquired Dynamic Database and the Type of filtering field. Bridge database parameters and statistics for the Acquired and Permanent Databases appear in the middle portion of the screen. Brief explanations for the Acquired and Permanent Database fields are provided below.

  • Page 60: Editing The Dynamic Ageing Time Field

    USING BRIDGE MANAGEMENT OPTIONS Permanent Database Max. Entries: Indicates the maximum number of addresses allowed in the given database. Current Entries: Indicates the number of entries currently recorded in the bridge's Permanent Database. 5.4.1.2 Editing the Dynamic Ageing Time Field To edit the Ageing Time field: 1.

  • Page 61: The Create Entry Option

    USING BRIDGE MANAGEMENT OPTIONS FILTERNING DATABASE 0 Hours 3 Minutes 8191 None Create Entry in Database: Permanent Destination Address: 00-00-00-00-00-00 CREATE Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Permanent Database Max Entries: 2047 Current Entries: 17 DISPLAY RANGE...
  • Page 62 USING BRIDGE MANAGEMENT OPTIONS This Filtering Database - Create Entry Screen contains the same information as the previous Filtering Database Screen, but with the addition of four new fields for entering addresses to the Acquired Database or Permanent Database for the bridge. To create an entry in the appropriate database: 1.

  • Page 63: The Delete Entry Option

    Figure 5-12 Filtering Database - Delete Entry Screen USING BRIDGE MANAGEMENT OPTIONS FILTERNING DATABASE 0 Hours 3 Minutes 8191 None Database: Address: DELETE Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Permanent Database Max Entries: 2047 Current Entries: 17 Permanent 00-00-00-00-00-00...

  • Page 64: The Display Entry Option

    USING BRIDGE MANAGEMENT OPTIONS 5. Highlight the Address field. 6. Enter the Ethernet address (in XX-XX-XX-XX-XX-XX hex format) you intend to delete from the database in the Address field. 7. Press Return. 8. Highlight the DELETE option at the bottom of the screen. 9.
  • Page 65 USING BRIDGE MANAGEMENT OPTIONS FILTERNING DATABASE 0 Hours 3 Minutes 8191 None Database: Address: Type Enet Port Static DISPLAY ENTRY Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Permanent Database Max Entries: 2047 Current Entries: 17 Permanent 00-00-00-00-00-00 Filter 5-35...

  • Page 66: The Display Range Option

    Figure 5-14 Filtering Database - Display Range Screen 5-36 FILTERNING DATABASE 0 Hours 3 Minutes 8191 None Database: Acquired Start Index: 0 Stop Index: 8191 RETURN DISPLAY RANGE Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Permanent Database Max Entries: 2047 Current Entries: 17...
  • Page 67 3. Highlight the Database field. 4. Press the Return key until the appropriate database is displayed in the Database field. The database field is a toggle field that alternately displays Acquired and Permanent when you press Return. 5. Highlight the Start Index field. 6.

  • Page 68: The Special Database Option

    4 Minutes Start Index: 0 Type Static Static Static Static Static Static Static Static Static Static NEXT PAGE Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Stop Index: 8191 Enet Port Filter Filter Filter Filter Filter Filter Filter Filter...

  • Page 69: The Special Database Screen Fields

    (must be filled by 12 hexadecimal digits or Xs, which represent any wildcard characters). USING BRIDGE MANAGEMENT OPTIONS SPECIAL DATABASE 0 Hours 4 Minutes Source Addr XXXXXXXXXXXX Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Type Data Field XXXX XXXXXXXXXXXXXX...

  • Page 70: Adding Special Database Filters

    filter, you can use these fields individually or in combination. CAUTION: Do not set and enable a Special Filtering Database filter to its default value of all Xs in all fields. If enabled, the NB30 will filter all network traffic passing through it.
  • Page 71 USING BRIDGE MANAGEMENT OPTIONS SPECIAL DATABASE 0 Hours 4 Minutes Source Addr XXXXXXXXXXXX XXXXXXXXXXXX XXXXXXXXXXXX XXXXXXXXXXXX Source Addr XXXXXXXXXXXX SAVE FILTER Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Type Data Field XXXX XXXXXXXXXXXXXX XXXX XXXXXXXXXXXXXX XXXX XXXXXXXXXXXXXX...

  • Page 72: Deleting Special Database Filters

    USING BRIDGE MANAGEMENT OPTIONS 13. Enter the Data field that you want to use as the filter, and press Return. Be sure that any unused characters are filled with Xs, which represent any number. 14. After you have filled in the specific field or fields that you want to use as a filter, highlight the SAVE FILTER command at the bottom of the screen.

  • Page 73: Editing Special Database Filters

    USING BRIDGE MANAGEMENT OPTIONS SPECIAL DATABASE 0 Hours 10 Minutes Source Addr XXXXXXXXXXXX XXXXXXXXXXXX XXXXXXXXXXXX XXXXXXXXXXXX Source Addr XXXXXXXXXXXX SAVE FILTER Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Type Data Field XXXX XXXXXXXXXXXXXX XXXX XXXXXXXXXXXXXX XXXX XXXXXXXXXXXXXX...

  • Page 74: The Bridge Protocol Option

    USING BRIDGE MANAGEMENT OPTIONS 6. Press Return. The desired changes have been made to the filter, and you return to the Special Database - Add Filter screen. THE BRIDGE PROTOCOL OPTION The Bridge Protocol option allows you to display bridge protocol parameters.

  • Page 75: Bridge Protocol Parameters Screen Fields

    Time Since Topology Change: 0 Topology Change: 0 Desig. Root: 00-00-00-00-1D-00-10-CA Max Age: 20 Forward Delay: 15 Bridge Hello Time: 2 Bridge Priority: 8000 SAVE PORT PARAMETERS Type: NB30 SW Version: 1.10.00 HW Version: 1 Status: ON_LINE Hold Time: 1 5-45...
  • Page 76 USING BRIDGE MANAGEMENT OPTIONS Topology Change Count: Indicates the number of times the bridge's Topology Change flag has been changed since the bridge was powered up or initialized. Root Cost: Indicates the value or cost of the data path from the bridge to the root bridge.

  • Page 77: Editing The Bridge Protocol Parameters Screen Fields

    Age Parameters. This table provides a range of values to which the Bridge Max Age time field should be set, given allowable Bridge Max Age or Bridge Forward Delay times. This will ensure that the NB30 will operate effectively in a Spanning Tree Algorithm environment. For...
  • Page 78 USING BRIDGE MANAGEMENT OPTIONS Table 5-1 Optimal Bridge Max. Age Parameters 5-48...
  • Page 79 These values will ensure that the NB30 will operate effectively in a Spanning Tree Algorithm environment. Changing Root Bridge Max Age Time If the bridge is the root bridge, and you want to change the maximum time that bridge protocol information will be kept before it is discarded: 1.

  • Page 80: The Port Parameters Option

    USING BRIDGE MANAGEMENT OPTIONS 1. Use the arrow keys to highlight the Bridge Hello Time field. 2. Enter the new time at this field, in seconds. A time of 1 to 10 seconds is allowed. 3. Press Return. Changing Bridge Priority If you want to change the part of the bridge address that contains the identifier used in the Spanning Tree Algorithm for priority comparisons: 1.

  • Page 81: The Bridge Port Parameters Screen

    Parameters Screen. On the screen, two data columns are provided to the right of each of the fields to display the respective data for the Ethernet port of both the Local and Remote NB30. USING BRIDGE MANAGEMENT OPTIONS SPECIAL DATABASE...

  • Page 82: Bridge Port Parameters Screen Fields

    USING BRIDGE MANAGEMENT OPTIONS 5.5.2.2 Bridge Port Parameters Screen Fields Port Priority: Displays the part of the port identifier which is used with the Spanning Tree Algorithm when determining which port in a LAN segment has priority. This information can be edited to change topology if needed. Uptime: Displays the time that has elapsed, in seconds, since the individual port was last reset or initialized.

  • Page 83: Editing The Bridge Port Parameters Screen Fields

    Topology Change Acknowledgment: Indicates the new value of the Topology Change Acknowledgment flag that will be transmitted by the designated bridge in the next configuration BPDU on the associated port. This field will display 0 or 1. A 0 indicates that no change is occurring;...
  • Page 84 USING BRIDGE MANAGEMENT OPTIONS 5-54...

  • Page 85: Appendix Aerror Messages

    MESSAGE ON SCREEN Illegal Time Entered Illegal Date Entered Too Many Characters Entered Illegal Numeric Value Entered User has entered a non-numeric Illegal Ethernet Address Bridge Information Screen Parameters Saved Bridge Setup Screen Parameters Saved DSX-1 Setup Screen Parameters Saved New Ageing Time and Filtering Type Saved Ageing Time Entered...
  • Page 86 Appendix A : MESSAGE ON SCREEN Entry Saved In Database Entry Already Exists, or Database Full Entry Deleted in Database Could Not Delete Entry Entry Not Found Invalid Password Entered New Password Verified Error DESCRIPTION User hit CREATE ENTRY on the Filtering Database screen or SAVE FILTER on the Special Database - Save Filter screen and the entry address was...
  • Page 87 MESSAGE ON SCREEN New Password Saved Refresh Time Must be Greater Than 0 Database is Full Entry Already Exists DESCRIPTION The new password entered has passed the new password verification on the Bridge Password screen. An incorrect time of 0 was entered into the Refresh Time field.
  • Page 88 Appendix A :...

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