Nortel Networks 350 guide

BayStack 350 10/100/1000 Series Switches

To connect multiple VLANs across switches with redundant links, the STP must be disabled on all participating switch ports. Figure 1-16 shows possible consequences of enabling the STP when using VLANs between untagged (non-802.1Q tagged) switches.

Station A

VLAN 1

No

CommunicationsForwarding

VLAN 1

Station B

BayStack 303 switch

303

S1

VLAN 2

Blocking

BayStack 303 switch

303

S2

VLAN 2

BS35017A

Figure 1-16. Possible Problems with VLANs and Spanning Tree Protocol

As shown in Figure 1-16, with STP enabled, only one connection between switch S1 and S2 is forwarding at any time. Communications failure occurs between VLAN 2 of S1 and VLAN 2 of S2, blocking communications between Stations A and B.

The link connecting VLAN 1 on switches S1 and S2 is selected as the forwarding link based on port speed, duplex-mode, and port priority. Because the other link connecting VLAN 2 is placed into Blocking mode, stations on VLAN 2 in switch S1 cannot communicate with stations in VLAN 2 on switch S2. With multiple links only one link will be forwarding.

304376-B Rev 00

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Nortel Networks 350 manual Possible Problems with VLANs and Spanning Tree Protocol

Contents

Using the BayStack 10/100/1000 Series Switch Trademarks Copyright 1999 Bay Networks, IncStatement of Conditions USA Requirements Only Canada Requirements Only Japan/Nippon Requirements OnlyBay Networks, Inc. Software License Agreement Voluntary Control Council for Interference Vcci Statement Rev Rev Page Contents Chapter Installing the BayStack 350 Switch Chapter Using the Console Interface Chapter Troubleshooting Appendix B Media Dependent Adapters Page Figures Xiv Figure B-1 Figure B-2 Tables LED Indications During the Software Download Process Before You Begin Preface This guide has four chapters, six appendixes, and an index OrganizationIf you want to Go to Acronyms Text Conventions Related Publications How to Get Help Page Physical Description BayStack 350 10/100/1000 Series Switches Front-Panel Components Front-Panel Comm Port 10BASE-T/100BASE-TX Port ConnectorsUplink/Expansion Slot LED Display Panel Label Type Color State Meaning LED Display Panel LED Descriptions Descriptions of the back-panel components follow the figure Back-Panel International Power Cord Specifications AC Power ReceptacleCountry/Plug description Specifications Typical plug Cooling Fans Features Telnet Ieee 802.1Q VLANs Ieee 802.1p Prioritizing Igmp Snooping FeatureMultiLink Trunking Port Mirroring Flash Memory Storage BootP Automatic IP Configuration Autosensing and Autonegotiation Snmp MIB Support Configuration and Switch Management Network Configuration BayStack 350-24T Used as a Desktop Switch Desktop Switch Application BayStack 350-24T Used as a Segment Switch Segment Switch Application Configuring Power Workgroups and a Shared Media Hub High-Density Switched Workgroup Application Port-Based Vlan Example Ieee 802.1Q Vlan Workgroups Ieee 802.1Q Tagging Default Vlan Settings 10 .1Q Tagging 1 12 .1Q Tagging 3 Vlans Spanning Multiple 802.1Q Tagged Switches VLANs Spanning Multiple Switches 15. VLANs Spanning Multiple Untagged Switches Vlans Spanning Multiple Untagged Switches 16. Possible Problems with VLANs and Spanning Tree Protocol 17. Multiple VLANs Sharing Resources Shared Servers 18. Vlan Broadcast Domains Within the Switch 19. Default Vlan Configuration Screen Example Default Vlan Configuration screen opens Figure 18 on 21. Default Vlan Port Configuration Screen Example Vlan Workgroup Summary 22. Vlan Port Configuration Screen Example 23. Vlan Configuration Spanning Multiple Switches Vlan Configuration Rules Igmp Snooping 24. IP Multicast Propagation with Igmp Routing 25. BayStack 350-24T Filtering IP Multicast Streams 1 Internet Designated Router Host Membership Query Igmp Snooping Configuration Rules 27. Prioritizing Packets Ieee 802.1p Prioritizing 28. Port Transmit Queue Traffic Class Configuration screen opens Figure To configure the port priority level, follow these steps 30. Setting Port Priority Example Vlan Port Configuration screen opens Figure MultiLink Trunks 31. Switch-to-Switch Trunk Configuration Example 32. Switch-to-Server Trunk Configuration Example Client/Server Configuration Utilizing MultiLink Trunks 33. Client/Server Configuration Example Trunk Configuration Screen for Switch S1 Trunk Configuration Screen ExamplesSetting up the Trunk Configuration For S1 35. MultiLink Trunk Configuration Screen for Switch S1 MultiLink Trunk Configuration screen opens Figure Using the BayStack 350 10/100/1000 Series Switch 36. MultiLink Trunk Configuration Screen for Switch S2 Trunk Configuration Screen for Switch S2 Using the BayStack 350 10/100/1000 Series Switch 37. MultiLink Trunk Configuration Screen for Switch S3 Trunk Configuration Screen for Switch S3 Using the BayStack 350 10/100/1000 Series Switch 38. MultiLink Trunk Configuration Screen for Switch S4 Trunk Configuration Screen for Switch S4 Using the BayStack 350 10/100/1000 Series Switch MultiLink Trunking Configuration Rules Before Configuring Trunks Using the BayStack 350 10/100/1000 Series Switch 39. Path Cost Arbitration Example Spanning Tree Considerations 40. Example 1 Correctly Configured Trunk 41. Example 2 Detecting a Misconfigured Port Additional Tips About the MultiLink Trunking Feature Port Mirroring Conversation Steering 42. Port-Based Mirroring Configuration Example Port-Based Mirroring Configuration BayStack 350 10/100/1000 Series Switches 43. Port Mirroring Port-Based Screen Example Address-Based Mirroring Configuration 44. Address-Based Mirroring Configuration Example 45. Port Mirroring Address-Based Screen Example Port Mirroring Configuration Rules Page Installation Requirements Chapter Installing the BayStack 350 Switch Package Contents Installing the BayStack 350 Switch on a Flat Surface Installation Procedure Attach all devices to the ports Installing the BayStack 350 Switch in a Rack Positioning the Chassis in the Rack Attaching Mounting Brackets Attaching Devices to the BayStack 350 Switch 100 Mb/s Port Connections Connecting the 10BASE-T/100BASE-TX Ports Connecting the Console/Comm Port Connecting to the Console/Comm Port Connecting Power Using the BayStack 350 10/100/1000 Series Switch BayStack 350 Switch AC Power Receptacle Verifying the Installation Power-Up Sequence Verifying the Installation Using the LEDsStage Description LED indication 10. BayStack 350 Switch Self-Test Screen Verifying the Installation Using the Self-Test Screen 11. Bay Networks Logo Screen Initial Setup of the BayStack 350 Switch Select IP Configuration/Setup or press i from the Main Menu IP Configuration/Setup Screen Installing the BayStack 350 Switch Page Accessing the CI Menus and Screens Chapter Using the Console Interface Navigating the CI Menus and Screens Using the CI Menus and Screens Map of Console Interface Screens Screen Fields and Descriptions Describes the CI main menu options Main MenuConsole Interface Main Menu Options OptionDescription Switch Configuration Option Description System CharacteristicsConfiguration Telnet Configuration Settings Option Description Reset to Default Option Description IP Configuration/SetupLogout IP Configuration/Setup Screen Fields Describes the IP Configuration/Setup screen fieldsConfigurable Field Description Field Description Last BootP Choosing a BootP Request Mode BootP Always BootP When Needed BootP or Last Address BootP Disabled Snmp Configuration Screen Snmp Configuration Snmp Configuration Screen Fields Describes the Snmp Configuration screen fields System Characteristics Screen System Characteristics System Characteristics Screen Fields Describes the System Characteristics screen fields Switch Configuration Menu Screen Switch Configuration Switch Configuration Menu Screen Options Describes the Switch Configuration Menu screen options Option Description Display Port Statistics MAC Address TableClear All Port Statistics Return to Main Menu MAC Address Table Screen Fields Describes the MAC Address Table screen fieldsField Description Aging Time Find an Address Vlan Configuration Menu Vlan Configuration Menu Screen Options Describes the Vlan Configuration Menu screen options Vlan Configuration Screen Vlan Configuration Vlan Configuration Screen Fields Describes the Vlan Configuration screen fields 10. Vlan Port Configuration Screen Vlan Port Configuration Vlan Port Configuration Screen Fields Describes the Vlan Port Configuration screen fields See Assigning Tagging to Gigabit MDA Ports on Field Description Primary Vlan Tagging 11. Vlan Display by Port Screen Vlan Display by Port 10 describes the Vlan Display by Port screen fields Traffic Class ConfigurationVlan Display by Port Screen Fields VLANs Traffic Class Configuration Screen Fields 11 describes the Traffic Class Configuration screen fieldsField Description User Priority 13. Port Configuration Screen 1 Port Configuration 12 describes the Port Configuration screen fields Gigabit MDA only supports 1000 Mb/s in full-duplex modePort Configuration Screen 2 Port Configuration Screen Fields High Speed Flow Control Configuration Field Description Autonegotiation 13. High Speed Flow Control Configuration Screen FieldsFlow Control High Speed Flow Control Configuration Screen Fields Choosing a High Speed Flow Control ModeField Description Preferred Phy Active Phy 16. MultiLink Trunk Configuration Menu Screen MultiLink Trunk Configuration 14. MultiLink Trunk Configuration Menu Screen Options MultiLink Trunk Configuration ScreenOption Description MultiLink Trunk Utilization MultiLink Trunk Configuration Screen Fields 17. MultiLink Trunk Configuration Screen Field Description STP Learning Trunk ModeTrunk Status Trunk Name 18. MultiLink Trunk Utilization Screen 1 MultiLink Trunk Utilization Screen MultiLink Trunk Utilization Screen Fields 16 describes the MultiLink Trunk Utilization screen fieldsTraffic Type 16. MultiLink Trunk Utilization Screen Fields Port Mirroring ConfigurationField Description Last 5 Minutes Last 30 Minutes 17. Port Mirroring Configuration Screen Fields 17 describes the Port Mirroring Configuration screen fieldsFieldDescription Field Description Monitor Port Port Mirroring Configuration Screen FieldsPort Y Address a Fields Description Monitoring Modes 21. Rate Limiting Configuration Screen 1 Rate Limiting Configuration 22. Rate Limiting Configuration Screen 2 Rate Limiting Configuration Screen Fields 19 describes the Rate Limiting Configuration screen fieldsPacket Type Limit 20 describes the Igmp Configuration screen fields Igmp Configuration Snooping Igmp Configuration Screen FieldsProxy Robust Value Field Description Query Time 24. Port Statistics Screen Port Statistics Port Statistics Screen Fields 21 describes the Port Statistics screen fields Oversized Packets Field Description Undersized PacketsCollisions Single Collisions 21. Port Statistics Screen Fields Console/Comm Port Configuration 25. Console/Comm Port Configuration Screen Comm Port Parity 22. Console/Comm Port Configuration Screen Fields Required for Both Any Ascii string of up to 15 printable characters Spanning Tree Configuration 23. Spanning Tree Configuration Menu Screen Options 26. Spanning Tree Configuration Menu Screen 27. Spanning Tree Port Configuration Screen 1 Spanning Tree Port Configuration Spanning Tree Port Configuration Screen Fields 28. Spanning Tree Port Configuration Screen 2 Priority Field Description ParticipationPath Cost 29. Spanning Tree Switch Settings Screen Display Spanning Tree Switch Settings 25. Spanning Tree Switch Settings Parameters 25 describes the Spanning Tree Switch Settings parametersParameter Description Delay Parameter Description Forward DelayBridge Hello Time 26 describes the Telnet Configuration screen fields Telnet Configuration Inactivity Timeout Event Logging 26. Telnet Configuration Screen Fields Field Description Allowed Source Telnet Configuration Screen FieldsIP Address Mask Software Download 31. Software Download Screen LED Indications During the Download Process 27 describes the Software Download screen fields27. Software Download Screen Fields Tftp Server IP Address 28. LED Indications During the Software Download Process Phase Description LED indications 32. Event Log Screen Display Event Log Write Threshold Excessive Bad Entries 34. Sample Event Log Entry Exceeding the Write Threshold Flash Update 36. Self-Test Screen After Resetting the Switch Reset 37. Bay Networks Logo Screen Reset to Default Settings Using the Console Interface Using the BayStack 350 10/100/1000 Series Switch Using the Console Interface Logout 40. Password Prompt Screen Chapter Troubleshooting LED Indications BayStack 350 Switch LED Locations Troubleshooting Diagnosing and Correcting the Problem A normal power-up sequence, the LEDs appear as follows Normal Power-Up SequenceSymptom Probable cause Corrective action Corrective Actions Autonegotiation Modes Port Connection Problems Port Interface Page Environmental Parameter Operating Specification Storage SpecificationElectrical Parameter Model 350-24T Model 350-12T Performance Specifications Physical DimensionsNetwork Protocol and Standards Compatibility Data Rate Interface Options Safety Agency CertificationElectromagnetic Emissions Electromagnetic Immunity Declaration of Conformity Type Model/Description See Appendix B Media Dependent Adapters Label Description 10BASE-T/100BASE-TX MDA 100BASE-FX MDAs Using the BayStack 350 10/100/1000 Series Switch Table B-2 100BASE-FX MDA Components Figure B-2 BASE-FX MDA Front Panels Table B-2 BASE-FX MDA Components 1000BASE-SX MDAsItem Label Description BASE-SX MDA Components Item Label Description Figure B-3 BASE-SX MDA Front Panels 1000BASE-LX MDAs Table B-3 BASE-LX MDA Components Figure B-4 BASE-LX MDA Front Panels 1000BASE-LX Multimode Applications Figure B-5. Installing an MDA Installing an MDA Replacing an MDA with a Different Model Remove the AC power cord from the power sourceLoosen the thumbscrews and remove the MDA To learn more about Refer to this section Appendix C Quick Steps to Features Figure C-1. Configuring 802.1Q VLANs 1 Configuring 802.1Q VLANs Figure C-2. Configuring 802.1Q VLANs 2 Figure C-3. Configuring 802.1Q VLANs 3 Figure C-4. Configuring MultiLink Trunks Configuring MultiLink Trunks Figure C-5. Configuring Port Mirroring 1 Configuring Port Mirroring Figure C-6. Configuring Port Mirroring 2 Figure C-7. Configuring Igmp Snooping 1 Configuring Igmp Snooping Figure C-8. Configuring Igmp Snooping 2 Figure C-9. Configuring Igmp Snooping 3 Figure D-1. RJ-45 8-Pin Modular Port Connector RJ-45 10BASE-T/100BASE-TX Port Connectors Pin Signal Description Table D-1 RJ-45 Port Connector Pin AssignmentsMDI and MDI-X Devices Figure D-2. MDI-X to MDI Cable Connections MDI-X to MDI Cable Connections Figure D-3 MDI-X to MDI-X Cable Connections MDI-X to MDI-X Cable Connections Table D-2 DB-9 Console/Comm Port Connector Pin Assignments DB-9 RS-232-D Console/Comm Port ConnectorPage Field Default setting Appears in this CI screen Appendix E Default Settings Port # port number Default Settings Using the BayStack 350 10/100/1000 Series Switch Default Settings Page Appendix F Sample BootP Configuration File Using the BayStack 350 10/100/1000 Series Switch Index Index-2 Index-3 Index-4 Index-5 Index-6