Flowcontrol | SMC Networks SMC6750L2 guide

COMMAND LINE INTERFACE

Example

The following example configures Ethernet port 5 capabilities to 100half, 100full and flow control.

Console(config)#interface ethernet 1/5

Console(config-if)#capabilities 100half

Console(config-if)#capabilities 100full

Console(config-if)#capabilities flowcontrol

Console(config-if)#

flowcontrol

Use this command to enable flow control. Use the no form to disable flow control.

Syntax

flowcontrol no flowcontrol

Default Setting

Flow control enabled

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

•Flow control can eliminate frame loss by “blocking” traffic from end stations or segments connected directly to the switch when its buffers fill. When enabled, back pressure is used for half-duplex operation and IEEE 802.3x for full-duplex operation.

•To enable flow control under autonegotiation, flowcontrol must be included in the capabilities list for any port.

•To force operation to the mode specified in a flowcontrol command, use the no negotiation command to disable auto-negotiation on the selected interface.

•Flow control should not be used if a port is connected to a hub. Otherwise flow control signals will be propagated throughout the segment.

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SMC Networks SMC6750L2 manual Syntax Flowcontrol no flowcontrol Default Setting

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 Setting Passwords Basic ConfigurationConsole Connection 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 Getting Help on Commands Command CompletionMinimum Abbreviation Showing Commands Partial Keyword Lookup Using Command History Negating the Effect of CommandsUnderstanding Command Modes Exec Commands Configuration Commands Command Line Processing Keystroke Function Command Groups Command Description Group 120 General Commands EnableSyntax Enable level Default Setting Disable Command UsageRelated Commands 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 Ip http port Default Setting Command ModeSyntax Ip http port port-numberno ip http port Syntax Ip http server no ip http server Default Setting Syntax Logging on no logging on Default SettingIp http server Logging on Logging history Flash errors level 3 RAM warnings level 7 Clear logging Show loggingSyntax Clear logging flash ram 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 Radius-server port Radius-server keySyntax Radius-server port portnumber no radius-server port 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 Snmp-server host Snmp-server locationSyntax Snmp-server location text no snmp-server location 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 Ping Show ip redirectsSyntax Ping host count countsize size 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 Parity SpeedSyntax Parity none even odd no parity 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 Show interfaces counters Port-channel channel-idRange Default SettingSyntax Show interfaces counters interface Show interfaces switchport Syntax Show interfaces switchport interface Address Table Commands Bridge address Show bridge Clear bridge Syntax Clear bridge bridge-group Show bridge group aging-time Bridge-group aging-timeSyntax Show bridge group bridge-groupaging-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 102 103 Show vlanSyntax Show vlan id vlan-idname vlan-name Gvrp and Bridge Extension Commands Switchport gvrpSyntax Switchport gvrp no switchport gvrp Default Setting 104 Syntax Show gvrp configuration interface Show gvrp configuration105 Garp timer 106 Syntax Show garp timer interface Show garp timer107 Syntax Bridge-ext gvrp no bridge-ext gvrp Default Setting Bridge-ext gvrpShow bridge-ext 108 Igmp Snooping Commands 109 Ip igmp snooping Syntax Ip igmp snooping no ip igmp snooping Default Setting110 Ip igmp snooping vlan static 111 Show ip igmp snooping Ip igmp snooping version112 Show bridge multicast 113 Ip igmp snooping querier 114 Ip igmp snooping query-interval Ip igmp snooping query-count115 Ip igmp snooping query-max-response-time 116 Ip igmp snooping query-time-out 117 Ip igmp snooping vlan mrouter 118 119 Show ip igmp snooping mrouterSyntax Show ip igmp snooping mrouter vlan vlan-id Priority Commands 120 Switchport priority default 121 Queue bandwidth 122 Queue cos-map 123 124 Show queue bandwidth Show queue cos-map125 Syntax Show queue cos-map interface Syntax Map ip port no map ip port Default Setting Map ip port Global Configuration126 Map ip port Interface Configuration 127 Map ip precedence Interface Configuration Map ip precedence Global Configuration128 129 Map ip dscp Global Configuration Map ip dscp Interface ConfigurationSyntax Map ip dscp no map ip dscp Default Setting 130 131 132 Show map ip portSyntax Show map ip port interface 133 Show map ip precedenceSyntax Show map ip precedence interface 134 Show map ip dscpSyntax Show map ip dscp interface Port monitor Mirror Port Commands135 136 Show port monitorSyntax Show port monitor interface Port Trunking Commands 137 138 Channel-groupSyntax Channel-group channel-idno channel-group Lacp Syntax Lacp no lacp Default Setting139 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 Glossary-7 Transmission Control Protocol/Internet Protocol TCP/IPTrivial File Transfer Protocol Tftp Virtual LAN Vlan Glossary-8 Index Index-1 Index-2 Page For Technical SUPPORT, Call