Extreme Networks Summit1 guide

SPANNING TREE PROTOCOL (STP)

Within a single STPD, you must be extra careful when configuring your VLANs. Figure 7-2illustrates a network that has been incorrectly set up using a single STPD so that the STP configuration disables the ability of the switches to forward VLAN traffic.

Marketing & Sales

Marketing, Sales & Engineering

Switch 1

Switch 3

Switch 2

Sales & Engineering

Figure 7-2:Tag-based STP configuration

The tag-based network in Figure 7-2has the following configuration:

•Switch 1 contains VLAN Marketing and VLAN Sales.

•Switch 2 contains VLAN Engineering and VLAN Sales.

•Switch 3 contains VLAN Marketing, VLAN Engineering, and VLAN Sales.

•The tagged trunk connections for three switches form a triangular loop that is not permitted in an STP topology.

•All VLANs in each switch are members of the same STPD.

STP may block traffic between Switch 1 and Switch 3 by disabling the trunk ports for that connection on each switch.

Switch 2 has no ports assigned to VLAN marketing. Therefore, if the trunk for VLAN marketing on Switches 1 and 3 is blocked, the traffic for VLAN marketing will not be able to traverse the switches.

7-4	SUMMIT SWITCH INSTALLATION AND USER GUIDE

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Extreme Networks Summit1 manual Marketing & Sales Marketing, Sales & Engineering

Contents

Summit Switch Installation and User Guide Page Contents Installation and Setup Page Virtual Lans Vlans Switch Forwarding Database FDB Quality of Service QOS Routing Protocols IP Multicast Routing Technical Specifications Troubleshooting Figures 10-3 Tables 10-6 Preface Introduction Text Conventions ConventionsTerminology Icon Alerts you to Related Publications Preface About the Summit Family of Switches Summit Overview Summit Switch Models Summary of Features Port Connections 1Summit Switch Port ConfigurationsSwitch Model Gigabit Ethernet Ports Fixed Redundant 2Media Types and Distances Standard Media Type Mhz/Km Maximum Rating Distance Backup Active FULL-DUPLEXPort Redundancy Load Sharing Spanning Tree Protocol STP Quality of Service QOS IP Unicast RoutingIP Multicast Routing Network Configuration Example 2Network configuration using the Summit family of switches Network Configuration Example SUMMIT1 Front View 3Summit1 front view SUMMIT2 Front View 4Summit2 front view SUMMIT3 Front View 5Summit3 front view SUMMIT4 Front View 6Summit4 front view SUMMIT4/FX Front View 7Summit4/FX front view SUMMIT48 Front View 8Summit48 front view Color Indicates 10/100Mbps Port Status LEDsGigabit Ethernet Port Status LEDs Summit Rear View Power SocketRedundant Power Supply Port Serial Number Default Setting Factory Defaults4Summit Factory Defaults MAC Address RIP Summit Overview Installation and Setup Following Safety InformationDetermining the Switch Location Media Types and Distances 1Media Types and Distances Installing the Summit Rack Mounting Connecting Equipment to the Console Port Stacking the Switch and Other DevicesFREE-STANDING Summit PC/Terminal 2Console Connector Pin-OutsFunction Pin Number Summit Powering on the Switch Checking the InstallationLogging in for the First Time Save Installation and Setup Accessing The Switch Understanding the Command Syntax Command Completion with Syntax HelperSyntax Helper Numerical Ranges Command ShortcutsAbbreviated Syntax Names Symbols 1Command Syntax SymbolsSymbolDescription 2Line-Editing Keys Command HistoryLINE-EDITING Keys Keys Description Common Commands 3Common CommandsCommand Description Switch Configuring Management Access Default Accounts 4Default AccountsAccount Name Access Level Account name admin cannot be deleted Creating a Management Account Using the Console Interface Methods of Managing the Summit Using Telnet Connecting to Another Host Using TelnetConfiguring Switch IP Parameters For more information on DHCP/BOOTP relay, refer to Chapter For example Disconnecting a Telnet Session Disabling Telnet Access IP Host Configuration Commands 5IP Host Configuration Commands Using Extremeware Vista Disabling WEB Access 6Supported MIBs Accessing Switch AgentsSupported Mibs Description RFC Number Configuring Snmp Settings 7SNMP Configuration Commands Displaying Snmp Settings Resetting and Disabling Snmp8SNMP Reset and Disable Commands Ping 9Ping Command ParametersChecking Basic Connectivity Traceroute Mtrace Accessing the Switch Configuring Ports Enabling and Disabling Ports Configuring Port Speed and Duplex Setting Turning OFF Autonegotiation for a Gigabit Ethernet Port Port Commands 1Port Commands Chapter Load Sharing 3Port Combinations for the Summit2 Configuring Load Sharing2Port Combinations for the Summit1 4Port Combinations for the Summit3 5Port Combinations for the Summit4 and Summit4/FX 6Port Combinations for the Summit48 Verifying the Load Sharing Configuration PORT-MIRRORING PORT-MIRRORING Commands 7Port-Mirroring Configuration CommandsPORT-MIRRORING Example Summit2 Summit Switch Port ConnectionsSummit Virtual Chassis Summit3 Extreme Discovery Protocol Summit4/FXSummit48 Summit Virtual Chassis Commands 9Summit Virtual Chassis Commands Vlans and Summit Switches Using the Virtual Chassis Configuring Ports Virtual LANs VLANs Overview of Virtual LansBenefits Types of Vlans PORT-BASED Vlans Sales Switch 2Single port-based Vlan spanning two switches 3Two port-based VLANs spanning two Switches Tagged Vlans Uses of Tagged Vlans Switch = Marketing = Sales= Tagged port Generic Vlan Registration Protocol -4 and Figure 6Network example using Gvrp 1GVRP Commands PROTOCOL-BASED Vlans = IP traffic = All other traffic IPX Vlan Names Precedence of Tagged Packets Over Protocol Filters Configuring Vlans on the Summit Default Vlan2VLAN Configuration Commands Etype Llc Snap Vlan Configuration Examples Displaying Vlan Settings Sample output from this command is as follows 3VLAN Delete and Reset Commands Deleting Vlans Overview of the FDB Switch Forwarding Database FDBFDB Contents FDB Entry Types HOW FDB Entries GET Added Configuring FDB Entries 1FDB Configuration CommandsAssociating a QOS Profile with AN FDB Entry FDB Configuration Examples Displaying FDB Entries 2Removing FDB Entry Commands Removing FDB Entries Spanning Tree Protocol STP Overview of the Spanning Tree ProtocolSpanning Tree Domains STP Configurations Defaults Switch a Switch B Switch Y Switch Z Switch M Marketing & Sales Marketing, Sales & Engineering Configuring STP on the Summit 1STP Configuration Commands Stpd Configuration Example Displaying STP Settings Disabling and Resetting STP 2STP Disable and Reset Commands Spanning Tree Protocol STP Quality of Service QoS Overview of Quality of ServiceBuilding Blocks QOS Mode Default QOS Profiles 1Default QoS Profiles Traffic GroupingsProfile Name Priority Minimum Bandwidth Maximum Bandwidth 2802.1p Values and Associated QoS Profiles 802.1p Value QoS Profile Ingress Mode Creating and Configuring a QOS Profile Assigning a QOS Profile 3PQM Commands Port Queue Monitor Configuring QOS 4QoS Configuration Commands Sample Ingress Mode QOS Configuration Sample Egress Mode QOS Configuration Resetting QOS Displaying QOS Information IP Unicast Routing Overview of IP Unicast Routing Router Interfaces 1Routing between VLANs Populating the Routing Table Proxy ARP IP Multinetting Bootp works only on the Vlan assigned to the IP protocol Assign the subnet to a physical port IP Unicast Routing Configuring IP Unicast Routing Configuring DHCP/BOOTP Relay Verifying the IP Unicast Routing Configuration Verifying the DHCP/BOOTP Relay Configuration 1Basic IP Commands Disables routing for one or more VLANs 2Route Table Configuration Commands 3ICMP Configuration Commands Routing Configuration Example MyCompany 2Unicast routing configuration example Displaying Router Settings 4Router Show Commands Resetting and Disabling Router Settings 5Router Reset and Disable Commands Routing Protocols Overview RIP Versus Ospf Split Horizon Overview of RIPRouting Table Poison Reverse Triggered Updates Route Advertisement of VlansRIP Version 1 Versus RIP Version Overview of Ospf Link State DatabaseAreas Area 2Virtual link for stub area 3Virtual link providing redundancy Configuring RIP 1RIP Configuration Commands 10-9 RIP Configuration Example 4RIP configuration example Displaying RIP Settings 2RIP Show Commands Resetting and Disabling RIP 3RIP Reset and Disable Commands Configuring Ospf 4OSPF Configuration Commands Default Minimum Maximum Ospf Configuration Example HeadquartersLos Angeles Configuration for ABR1 Following is the configuration for the router labeled ABR1 Displaying Ospf Settings Configuration for IR15OSPF Show Commands Resetting and Disabling Ospf Settings 6OSPF Reset and Disable Commands 10-20 IP Multicast Routing Configuring IP Multicasting Routing Igmp Overview 1IP Multicast Routing Configuration Commands 2IGMP Configuration Commands Seconds. The default setting is 10 seconds Configuration Example 1IP multicast routing configuration example Displaying IP Multicast Routing Settings 3IP Multicast Routing Show Commands Deleting and Resetting IP Multicast Settings 4IP Multicast Routing Reset and Disable Commands 1Switch Monitoring Commands Status Monitoring and StatisticsStatus Monitoring 12-2 Messages and higher are displayed 12-4 Displays detailed system-related information, including 12-6 Port Statistics Port Errors Port Monitoring Display Keys 2Port Monitoring Display Keys 4Fault Log Subsystems Switch Logging3Fault Levels Assigned by the Switch Level Description Local Logging Logging Commands Remote Logging 5Logging Commands Rmon Rmon Features of the Switch Rmon and the Switch Event Actions 6Event ActionsAction High Threshold 12-18 Using ExtremeWare Vista Enabling and Disabling WEB Access Setting UP Your Browser Accessing Extremeware Vista Navigating Extremeware Vista 1Multi-Select List Box Key Definitions Content FrameTask Frame Selection Type Key Sequence Saving Changes Standalone Buttons Do a GET When Configuring a Vlan Sending Screen Output to Extreme Networks Software Upgrade and Boot Options Downloading a NEW Image Rebooting the Switch Saving Configuration Changes Returning to Factory Defaults Using Tftp to Upload the Configuration Using Tftp to Download the Configuration Boot Option Commands 1Boot Option Commands 14-6 Safety Information Important Safety InformationPower Power Cord France and Peru only Fuse Connections Lithium Battery Environmental Requirements Technical SpecificationsSafety Electromagnetic Compatibility Heat Dissipation Power SupplyProtocols Used for Administration Standards Supported Snmp Troubleshooting Power LED does not light Using the COMMAND-LINE Interface Initial welcome prompt does not display Traps are not received by the Snmp Network Manager Vlans STP Troubleshooting Index Dvmrp EDP Index PQM Rmon Default Index of Commands Ii-Index of Commands Index of Commands-iii