Spanning Tree Concepts | Enterasys Networks VH-8G manual

There are five (5) states that the ports can be in for spanning tree:

•Blocking: A port in this state does not participate in the transmission of frames, thus preventing duplication arising through multiple paths existing in the active topology of the bridged LAN.

•Listening: A port in this state is preparing to participate in the transmission of frames. The transmission of frames is temporarily disabled in order to prevent temporary loops, which may occur in a bridged LAN during the lifetime of this state as the active topology of the bridged LAN changes.

•Learning: A port in this state is preparing to participate in the transmission of frames.

•Forwarding: A port in this state is participating in the transmission of frames.

•Disabled: A port in this state does not participate in the transmission of frames or the operation of the spanning tree process.

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Enterasys Networks VH-8G manual Spanning Tree Concepts

Contents

Management Guide Vertical Horizon VH-8G Gigabit Ethernet SwitchPage 9033640 9033640 Table of Contents Appendix A. Spanning Tree Concepts Snmp Management Appendix B. Virtual Lans Vlans Vi Table of Contents Console Port Out-of-Band Connections Configuration OptionsManagement Overview Required Connections In-Band Network Connection In-Band ConnectionsTelnet Connection Overview VH-8G User Interface User Access Factory Default Settings Factory Defaults Gvrp Selection Description Main Menu Displays/configures extended bridge capabilities provided by System Information Menu System Information Menu System Information Displaying System Information Parameter Description Displaying Switch Version Management Setup Menu Management Setup Menu Network Configuration Changing the Network Configuration IP Configuration IP Configuration IP Connectivity Test IP Connectivity Test Ping 10. Http Configuration Http Configuration 11. Serial Port Configuration Configuring the Serial Port Assigning Snmp Parameters 12. Snmp Configuration 13. Snmp Communities Configuring Community Names 14. IP Trap Managers Configuring IP Trap Managers 15. Console Login Configuration Console Login Configuration Downloading System Software Using Tftp Protocol to Download Over the Network 17. Configuration Save & Restore Saving the System Configuration 18. Management Configuration Configuring Management Access 19. Device Control Menu Configuring the Switch Not implemented in the current firmware release 20. Port Configuration Configuring Port Parameters 21. Port Information Viewing the Current Port Configuration 22. Spanning Tree Configuration Configuring Bridge STA Using the Spanning Tree Algorithm Device with the lowest MAC address will then 24. Spanning Tree Port Configuration Configuring STA for Ports 25. Spanning Tree Information Viewing the Current Spanning Tree Configuration 26. Bridge STA Information Displaying the Current Bridge STA 27. Spanning Tree Port Information Displaying the Current STA for Ports Rules defining port status are 28. Mirror Port Configuration Using a Mirror Port for Analysis Configuring Port Trunks 29. Port Trunking Configuration Igmp Multicast Filtering 30. Igmp Configuration Configuring Igmp 31. Broadcast Storm Control Configuration Configuring Broadcast Storm Control 32. Extended Bridge Configuration Configuring Bridge MIB Extensions By setting this parameter to False 33 .1P Configuration Configuring Traffic Classes 34 .1P Port Priority Configuration Port Priority Configuration 35 .1P Port Traffic Class Information 802.1P Port Traffic Class Information 802.1Q Vlan Base Information Configuring Virtual LANs 37 .1Q Vlan Current Table Information 802.1Q Vlan Current Table Information 38 .1Q Vlan Static Table Configuration 802.1Q Vlan Static Table Configuration 39 .1Q Vlan Static Table Configuration Example 40. Port Assignment Vlan Configuration Port Assignment Vlan Configuration 41. Multicast Router Port Information Multicast Router Port Information 42. Static Multicast Router Port Configuration Static Multicast Router Port Configuration 43. Igmp Member Port Configuration Igmp Member Port Configuration 44. Port Security Configuration Port Security Configuration 45. Network Monitor Menu Monitoring the Switch 46. Port Statistics Displaying Port Statistics 47. Rmon Statistics Displaying Rmon Statistics Drop Events 48. Unicast Address Table Displaying the Unicast Address Table 49. IP Multicast Registration Table Displaying the IP Multicast Registration Table 50. Static Unicast Addreeess Table Configuration Configuring Static Unicast Addresses Logging Off the System Resetting the System 64 VH-8G User Interface Common Tasks Configuring & Monitoring the Switch Setting Password Protection Assigning an IP Address Checking Network Configuration StatusConnecting via Telnet Viewing Switch Statistics Setting Snmp Management Access Downloading a Software Upgrade Configuring Port Mirroring Success Downloading Via the Serial Port Downloading Via Tftp Configuring Spanning Tree Parameters Configuring Class of Service Configuring VLANs Configuring Port Operation Configuring the Unicast Address Table Configuring BootP Setting a Default Gateway Configuring Port Trunks VH-8G Snmp Protocol Snmp Management RFC 1213 MIB-II MIB Objects RFC 1493 Bridge MIB RFC 1573 Interfaces Evolution MIBRFC 1643 Ethernet-Like MIB Enterasys Proprietary MIB Extensions Compiling MIB Extensions Enterasys WebsiteIeee 802.1Q Q-MIB General Spanning Tree FeaturesAppendix A. Spanning Tree Concepts Spanning Tree Protocol in a Network Figure A-1. Spanning Tree Using an VH-8G Switch Spanning Tree Protocol Parameters Table A-1. Spanning Tree Protocol Defaults Spanning Tree Protocol Operation 9033640 Spanning Tree Concepts VH-8G VLANs and Frame Tagging Appendix B. Virtual Lans Vlans Port Overlapping VH-8G Vlan ConfigurationAssigning Ports to VLANs Vlan Classification Automatic Vlan Registration Forwarding Tagged/Untagged Frames Forwarding Traffic with Unknown Vlan Tags Incoming tagged frames contain a priority level range Appendix C. Class of Service Figure C-1. Class of Service Example Igmp Snooping and IP Multicast Filtering Appendix D. IP Multicast Filtering VH-8G Index Tftp 9033640 Index Page Page 150183-102 R01