Forwarding Tagged/Untagged Frames | SMC Networks SMC6750L2 guide

CONFIGURING THE SWITCH

To implement GVRP in a network, you must first configure the static VLANs required on switches that are connected to PCs, servers, and other devices, so that these VLANs can be propagated across the network (Web - VLAN / VLAN Membership). For other core switches in the network, enable GVRP on the links between these devices

(Web - VLAN / Port Settings or Trunk Settings). You should also determine security boundaries in the network and disable GVRP on ports to prevent advertisements being propagated, or forbid ports from joining restricted VLANs.

Forwarding Tagged/Untagged Frames

If you want to create a small port-based VLAN for devices attached directly to a single switch, you can assign ports to the same untagged VLAN. However, to participate in a VLAN group that crosses several switches, you need to create a VLAN for that group and enable tagging on all ports.

Ports can be assigned to multiple tagged or untagged VLANs. Each port on the switch is therefore capable of passing tagged or untagged frames. To forward a frame from a VLAN-aware device to a VLAN-unaware device, the switch first decides where to forward the frame, and then strips off the VLAN tag. However, to forward a frame from a VLAN-unaware device to a VLAN-aware device, the switch first decides where to forward the frame, and then inserts a VLAN tag reflecting this port’s default VID.

Displaying Basic VLAN Information

Command Attributes

•VLAN Version Number – The VLAN version used by this switch as specified in the IEEE 802.1Q standard. (Web interface only.)

•Maximum VLAN ID – Maximum VLAN ID recognized by this switch.

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SMC Networks SMC6750L2 manual Forwarding Tagged/Untagged Frames, Displaying Basic Vlan Information

Contents

TigerSwitch 10/100 Page TigerSwitch 10/100 Management Guide Trademarks Limited Warranty SMC Networks, Inc Tesla Irvine, CA Contents Contents Command Line Interface Contents Vii Viii Contents Appendices Glossary Index Connecting to the Switch Configuration Options Required Connections Connecting to the Switch Remote Connections Console Connection Basic ConfigurationSetting Passwords Setting an IP Address Manual Configuration Dynamic Configuration Enabling Snmp Management Access Community Strings Saving Configuration Settings Trap Receivers Managing System Files System Defaults Function Parameter Default Function Parameter Default Pvid Switch Management Configuring the Switch Using the Web Interface Navigating the Web Browser Interface Home Button Action Panel Display Main Menu Menu Description Vlan Igmp Command Attributes Displaying System Information Pass Setting the IP Address Manual Configuration Console#ip dhcp restart Configuring the Logon Password Security Configuring Radius Logon Authentication Command Attributes CLI Commands Managing Firmware Downloading System Software from a Server Managing Firmware Saving or Restoring Configuration Settings Setting the Startup Configuration File Copying the Running Configuration to a File Displaying Bridge Extension Capabilities Managing Firmware Displaying Switch Hardware/Software Versions Main Board Managing Firmware Port Configuration Displaying Connection Status Port Configuration Configuring Interface Connections Port Configuration Setting Broadcast Storm Thresholds Command Usage Configuring Port Mirroring Address Table Settings Setting Static Addresses Displaying the Address Table Changing the Aging Time Spanning Tree Protocol Configuration Managing Global Settings Configuring the Switch Displaying the current global settings for STA Configuring the Switch Configuring the global settings for STA Managing STA Interface Settings Configuring the Switch Spanning Tree Protocol Configuration Configuring the Switch Vlan Configuration Assigning Ports to VLANs Vlan Configuration Forwarding Tagged/Untagged Frames Displaying Basic Vlan Information Command Attributes for Web Interface Displaying Current VLANs Command Attributes for CLI Interface Creating VLANs 103 Adding Interfaces Based on Membership Type CLI This example creates a new Vlan 101 Adding Interfaces Based on Static Membership Configuring Vlan Behavior for Interfaces Configuring the Switch Class of Service Configuration Setting the Default Priority for Interfaces Mapping CoS Values to Egress Queues Queue 125 Setting the Service Weight for Traffic Classes Mapping Layer 3/4 Priorities to CoS Values Selecting IP Precedence/DSCP Priority Mapping IP Precedence 133 Mapping Dscp Priority 130 Mapping IP Port Priority 126 Port Trunk Configuration Dynamically Configuring a Trunk with Lacp 139 Statically Configuring a Trunk 138 Configuring Snmp Setting Community Access Strings Specifying Trap Managers Multicast Configuration Configuring Igmp Parameters Command Attributes Interfaces Attached to a Multicast Router Displaying Interfaces Attached to a Multicast Router Command Attributes Displaying Port Members of Multicast Services Command Attribute Adding Multicast Addresses to VLANs Showing Device Statistics Configuring the Switch CLI This example shows statistics for port Configuring the Switch Using the Command Line Interface Accessing the CLI Telnet Connection Entering Commands Keywords and Arguments Minimum Abbreviation Command CompletionGetting Help on Commands Showing Commands Partial Keyword Lookup Understanding Command Modes Negating the Effect of CommandsUsing Command History Exec Commands Configuration Commands Command Line Processing Keystroke Function Command Groups Command Description Group 120 Syntax Enable level General CommandsEnable Default Setting Related Commands DisableCommand Usage Example Configure Show history Reload End Exit Quit Flash/File Commands Copy FLASH/FILE Commands Delete Syntax Syntax Dir boot-rom config opcode filename Dir Whichboot Column Heading Description Boot system Syntax Boot system boot-romconfig opcode filename System Management Commands Command Function Mode Hostname Syntax Hostname name no hostname Username Enable password Syntax Ip http port port-numberno ip http port Default Setting Command ModeIp http port Ip http server Syntax Ip http server no ip http server Default SettingSyntax Logging on no logging on Default Setting Logging on Logging history Flash errors level 3 RAM warnings level 7 Syntax Clear logging flash ram Clear loggingShow logging Syntax Show logging flash ram Show startup-config Show running-config Show running-config Show system Show users Show version Radius Client Commands Authentication login Radius-server host Syntax Radius-server port portnumber no radius-server port Radius-server portRadius-server key Syntax Radius-server key keystring no radius-server key Radius-server retransmit Radius-server timeout Show radius-server Snmp Commands Snmp-server community Snmp-server contact Syntax Snmp-server contact string no snmp-server contact Syntax Snmp-server location text no snmp-server location Snmp-server locationSnmp-server host Syntax Snmp-server enable traps Show snmp IP Commands Ip address Ip dhcp restart Ip default-gateway Syntax Ip default-gateway gateway no ip default-gateway Show ip interface Syntax Ping host count countsize size Show ip redirectsPing Interface Line Commands Line Syntax Line console vty Login Syntax Login local no login Password Syntax Password 0 7 password no password Exec-timeout Syntax Exec-timeout seconds no exec-timeout Password-thresh Syntax Password-thresh threshold no password-thresh Silent-time Syntax Silent-time seconds no silent-time Databits Syntax Databits 7 8 no databits Syntax Parity none even odd no parity ParitySpeed Syntax Speed bps no speed Stopbits Syntax Stopbits 1 Show line Syntax Show line console vty Interface Commands Interface Description Speed-duplex Syntax Negotiation no negotiation Default Setting Negotiation Default Setting Capabilities Syntax Flowcontrol no flowcontrol Default Setting Flowcontrol Syntax Shutdown no shutdown Default Setting Shutdown Switchport broadcast Show interfaces status Syntax Show interfaces status interface Syntax Show interfaces counters interface Port-channel channel-idRange Default SettingShow interfaces counters Show interfaces switchport Syntax Show interfaces switchport interface Address Table Commands Bridge address Show bridge Clear bridge Syntax Clear bridge bridge-group Syntax Show bridge group bridge-groupaging-time Bridge-group aging-timeShow bridge group aging-time Spanning Tree Commands Bridge spanning-tree Bridge forward-time Bridge hello-time Bridge max-age Bridge priority Bridge-group path-cost Bridge-group priority Bridge-group portfast Show bridge group Example Vlan Commands Vlan database Vlan Interface vlan Syntax Interface vlan vlan-id Switchport mode Syntax Switchport mode trunk hybrid no switchport mode Switchport acceptable-frame-types Switchport ingress-filtering Switchport native vlan 100 Switchport allowed vlan 101 Switchport forbidden vlan 102 Syntax Show vlan id vlan-idname vlan-name Show vlan103 Syntax Switchport gvrp no switchport gvrp Default Setting Gvrp and Bridge Extension CommandsSwitchport gvrp 104 105 Show gvrp configurationSyntax Show gvrp configuration interface Garp timer 106 107 Show garp timerSyntax Show garp timer interface Show bridge-ext Syntax Bridge-ext gvrp no bridge-ext gvrp Default SettingBridge-ext gvrp 108 Igmp Snooping Commands 109 110 Syntax Ip igmp snooping no ip igmp snooping Default SettingIp igmp snooping Ip igmp snooping vlan static 111 112 Ip igmp snooping versionShow ip igmp snooping Show bridge multicast 113 Ip igmp snooping querier 114 115 Ip igmp snooping query-countIp igmp snooping query-interval Ip igmp snooping query-max-response-time 116 Ip igmp snooping query-time-out 117 Ip igmp snooping vlan mrouter 118 Syntax Show ip igmp snooping mrouter vlan vlan-id Show ip igmp snooping mrouter119 Priority Commands 120 Switchport priority default 121 Queue bandwidth 122 Queue cos-map 123 124 125 Show queue bandwidthShow queue cos-map Syntax Show queue cos-map interface 126 Map ip port Global ConfigurationSyntax Map ip port no map ip port Default Setting Map ip port Interface Configuration 127 128 Map ip precedence Global ConfigurationMap ip precedence Interface Configuration 129 Syntax Map ip dscp no map ip dscp Default Setting Map ip dscp Global ConfigurationMap ip dscp Interface Configuration 130 131 Syntax Show map ip port interface Show map ip port132 Syntax Show map ip precedence interface Show map ip precedence133 Syntax Show map ip dscp interface Show map ip dscp134 135 Mirror Port CommandsPort monitor Syntax Show port monitor interface Show port monitor136 Port Trunking Commands 137 Syntax Channel-group channel-idno channel-group Channel-group138 139 Syntax Lacp no lacp Default SettingLacp 140 Appendix a Troubleshooting Troubleshooting Chart Upgrading Firmware via the Serial Port Upgrading Firmware VIA the Serial Port Troubleshooting Upgrading Firmware VIA the Serial Port Troubleshooting Console Port Pin Assignments DB-9 Port Pin Assignments Console Port to 9-Pin DTE Port on PC Console Port to 25-Pin DTE Port on PC Glossary-1 Glossary-2 Glossary-3 Glossary-4 Glossary-5 Glossary-6 Trivial File Transfer Protocol Tftp Glossary-7Transmission Control Protocol/Internet Protocol TCP/IP Virtual LAN Vlan Glossary-8 Index Index-1 Index-2 Page For Technical SUPPORT, Call