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SMC Networks SMC6824M 293, Show dns cache, This command displays entries in the DNS cache

Models: SMC6824M

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COMMAND LINE INTERFACE

show dns

This command displays the configuration of the DNS server.

Command Mode

Privileged Exec

Example

Console#show dns Domain Lookup Status:

DNS enabled Default Domain Name:

sample.com Domain Name List:

sample.com.jp

sample.com.uk Name Server List:

192.168.1.55

10.1.0.55

Console#

show dns cache

This command displays entries in the DNS cache.

Command Mode

Privileged Exec

Example

Console#show dns cache			IP	TTL	DOMAIN
NO	FLAG	TYPE	IP	TTL	DOMAIN
0	4	CNAME	10.2.44.96	893
pttch_pc.accton.com.tw			10.2.44.3	898	ahten.smc.com
1	4	CNAME	10.2.44.3	898	ahten.smc.com
2	4	CNAME	66.218.71.84	298	www.yahoo.akadns.net
3	4	CNAME	66.218.71.83	298	www.yahoo.akadns.net
4	4	CNAME	66.218.71.81	298	www.yahoo.akadns.net
5	4	CNAME	66.218.71.80	298	www.yahoo.akadns.net
6	4	CNAME	66.218.71.89	298	www.yahoo.akadns.net
7	4	CNAME	66.218.71.86	298	www.yahoo.akadns.net
8	4	ALIAS	POINTER TO:7	298	www.yahoo.com
Console#

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SMC Networks SMC6824M manual 293, Show dns cache, This command displays the configuration of the DNS server

Contents

TigerStack III 10/100 Page TigerStack III 10/100 Management Guide Trademarks Limited Warranty Limited Warranty Table of Contents Table of Contents Table of Contents Table of Contents Vii Command Line InterfaceViii Table of Contents Table of Contents Table of Contents Xii Xiii Xiv Table of Contents Xvi Xvii Glossary IndexXviii Xix TablesTables Xxi Xxii Xxiii Figures37 802.1X Global Information XxivXxv Xxvi Key Features Key FeaturesFeature Description Lacp Description of Software FeaturesDescription of Software Features Introduction Description of Software Features Introduction System Defaults System DefaultsFunction Parameter Default Https Pvid Dhcp Configuration Options Connecting to the SwitchInitial Configuration Required Connections Remote Connections Recovering from Stack Failure or Topology Change Stack OperationsSelecting the Stack Master Basic Configuration Resilient IP Interface for Management AccessConsole Connection Setting an IP Address Setting PasswordsManual Configuration Dynamic Configuration Enabling Snmp Management Access Community Strings for Snmp version 1 and 2c clients Clients, we recommend that you delete both of the defaultTrap Receivers Configuring Access for Snmp Version 3 ClientsSaving Configuration Settings Managing System Files Configuring Power over Ethernet Initial Configuration Using the Web Interface Configuring the SwitchConfiguring the Switch Home Navigating the Web Browser InterfaceWeb Page Configuration Buttons ButtonAction Panel Display Front Panel IndicatorsSwitch Main Menu Main MenuMenu Description Sntp ACL Vlan Mstp 206 Vlan ID Field Attributes Displaying System InformationSystem Information CLI Specify the hostname, location and contact information Displaying Switch Hardware/Software VersionsManagement Software General Switch Information Web Click System, Switch InformationField Attributes Displaying Bridge Extension CapabilitiesSetting the IP Address CLI Enter the following commandWeb Click System, Bridge Extension Command Attributes IP Interface Configuration Manual Manual ConfigurationIP Interface Configuration Dhcp Using DHCP/BOOTPManaging Firmware Command AttributesCopy Firmware Downloading System Software from a ServerSetting the Startup Code Command Usage Saving or Restoring Configuration SettingsBasic Configuration 11 Downloading Configuration Settings for Start-Up Downloading Configuration Settings from a Server12 Setting the Startup Configuration Settings Command Attributes Console Port SettingsCLI only 13 Console Port Settings Command Attributes Telnet Settings14 Configuring the Telnet Interface System Log Configuration Configuring Event LoggingLogging Levels Command Attributes15 System Logs Remote Log Configuration16 Remote Logs 17 Displaying Logs Displaying Log MessagesCLI This example shows the event message stored in RAM Sending Simple Mail Transfer Protocol Alerts18 Enabling and Configuring Smtp Alerts 19 Resetting the Switch Resetting the SystemSetting the System Clock Configuring SntpCLI Use the reload command to reboot the system 20 Sntp Configuration Setting the Time ZoneSimple Network Management Protocol 21 Setting the Time ZoneConfiguring the Switch Model Level Group Read Write Notify Security View SNMPv3 Security Models and LevelsSetting Community Access Strings CLI The following example enables Snmp on the switchEnabling the Snmp Agent 23 Configuring Snmp Community Strings Specifying Trap Managers and Trap Types Command UsageCommand Attributes 24 Configuring Snmp Trap Managers Setting the Local Engine ID Configuring SNMPv3 Management AccessCLI This example sets an SNMPv3 engine ID Specifying a Remote Engine IDCLI This example specifies a remote SNMPv3 engine ID Configuring SNMPv3 UsersConfiguring the Switch 27 Configuring SNMPv3 Users 169 Configuring Remote SNMPv3 UsersCommand Attributes 28 Configuring Remote SNMPv3 Users Configuring SNMPv3 Groups Object Label Object ID Description Supported Notification MessagesObject Label Object ID Description Rmon Events SwIpFilterRejectTrap 29 Configuring SNMPv3 Groups 165 Setting SNMPv3 Views30 Configuring SNMPv3 Views 163 User AuthenticationCommand Attributes Configuring User Accounts31 Configuring User Accounts Configuring Local/Remote Logon Authentication That use software runningOn a central server to Radius Settings Command Attributes32 Authentication Server Settings Tacacs Settings104 Configuring HttpsWeb Browser Operating System Https Support33 Https Settings Replacing the Default Secure-site CertificateConfiguring the Secure Shell Command Usage Configuring the Switch Field Attributes Generating the Host Key Pair34 SSH Host-Key Settings SSH server includes basic settings for authentication Configuring the SSH Server35 SSH Server Settings Command Usage Configuring Port SecurityCommand Attributes 36 Enabling Port Security Configuring 802.1X Port Authentication 802.1X protocol provides client authentication Displaying 802.1X Global Settings802.1X System Authentication Control The global setting for Web Click Security, 802.1X, InformationConfiguring 802.1X Global Settings CLI This example shows the default global setting forCLI This example enables 802.1X globally for the switch Configuring Port Settings for Authorized 39 802.1X Port ConfigurationUser Authentication Displaying 802.1X Statistics 802.1X StatisticsParameter Description CLI This example displays the 802.1X statistics for port 40 Displaying 802.1X StatisticsCommand Usage Filtering IP Addresses for Management Access41 Entering IP Addresses to be Filtered Configuring Access Control Lists Access Control ListsCommand Attributes Setting the ACL Name and TypeConfiguring a Standard IP ACL Command Attributes 100CLI This example creates a standard IP ACL named bill 101 Configuring an Extended IP ACL Command Attributes102 103 44 Configuring Extended IP ACLs104 Configuring a MAC ACL Command Attributes105 Command Usage106 45 Configuring MAC ACLsConfiguring ACL Masks 107Specifying the Mask Type Configuring an IP ACL Mask 108This mask defines the fields to check in the IP header 109 47 Configuring an IP based ACLConfiguring a MAC ACL Mask 110This mask defines the fields to check in the packet header 111 48 Configuring an ACL MAC Mask112 Binding a Port to an Access Control List49 Mapping ACLs to Port Ingress/Egress Queues 113Command Attributes Web Port ConfigurationDisplaying Connection Status 114115 Field Attributes CLIWeb Click Port, Port Information or Trunk Information Current status 116Configuring Interface Connections 117CLI This example shows the connection status for Port 118 119 51 Configuring Port Attributes120 Creating Trunk Groups121 Statically Configuring a Trunk Command Usage122 52 Static Trunk Configuration123 Enabling Lacp on Selected Ports Command Usage124 53 Lacp Port Configuration125 126 127 54 Lacp Aggregation Port Configuration128 Displaying Lacp Port Counters 129You can display statistics for Lacp protocol messages Lacp Port CountersDisplaying Lacp Settings and Status for the Local Side Lacp Internal Configuration Information130 131 56 Displaying Lacp Port Information 132Displaying Lacp Settings and Status for the Remote Side 10 Lacp Neighbor Configuration Information133 57 Displaying Remote Lacp Port Information 134135 Setting Broadcast Storm Thresholds136 Configuring Port Mirroring137 59 Configuring a Mirror PortConfiguring Rate Limits Command Attribute138 139 Showing Port Statistics11 Port Statistics 140141 Rmon Statistics 142143 61 Port Statistics 144Power Over Ethernet Settings 145CLI This example shows statistics for port Switch Power Status Displays the Power over Ethernet parameters for the switch146 Setting a Switch Power Budget Web Click PoE, Power Status147 148 Displaying Port Power StatusConfiguring Port PoE Power Web Click PoE, Power Port Status149 150 65 Configuring Port PoE PowerAddress Table Settings Setting Static Addresses151 152 Displaying the Address Table67 Displaying the MAC Dynamic Address Table 153Changing the Aging Time Spanning Tree Algorithm Configuration154 CLI This example sets the aging time to 300 seconds155 156 Displaying Global Settings157 158 Web Click Spanning Tree, STA Information 159Configuring Global Settings Global settings apply to the entire switch160 161 Basic Configuration of Global Settings162 Root Device Configuration163 Configuration Settings for Rstp164 70 Configuring the Spanning Tree Algorithm165 Displaying Interface Settings166 AD B 16771 STA Port Information 168169 Configuring Interface Settings170 171 72 Configuring Spanning Tree Algorithm per PortConfiguring Multiple Spanning Trees 172CLI This example sets STA attributes for port 173 73 Mstp Vlan Configuration174 175 Displaying Interface Settings for Mstp176 177 Configuring Interface Settings for MstpCLI This example sets the Mstp attributes for port 178Vlan Configuration Ieee 802.1Q VLANs179 Assigning Ports to VLANs 180181 Forwarding Tagged/Untagged Frames 182Enabling or Disabling Gvrp Global Setting CLI This example enables Gvrp for the switch183 184 Displaying Basic Vlan InformationWeb Click VLAN, 802.1Q VLAN, Basic Information Displaying Current VLANs 185Command Attributes CLI 186Creating VLANs 79 Vlan Static List Creating VLANs 187188 Adding Static Members to VLANs Vlan IndexCLI This example creates a new Vlan 189 Command AttributesAdding Static Members to VLANs Port Index 190191 Configuring Vlan Behavior for Interfaces192 193 194 Private VLANsVlan ID ID of configured Vlan 195Displaying Current Private VLANs 83 Displaying Private Vlan Port Information 196197 Configuring Private VLANs198 Associating Community VLANsEach community Vlan must be associated with a primary Vlan Displaying Private Vlan Interface Information 199200 Configuring Private Vlan Interfaces201 87 Configuring Private Vlan PortsLayer 2 Queue Settings Class of Service ConfigurationSetting the Default Priority for Interfaces 202203 CLI This example assigns a default priority of 5 to portMapping CoS Values to Egress Queues 20412 Mapping CoS Values to Egress Queues 13 CoS Priority Levels205 89 Configuring Traffic Classes206 Selecting the Queue Mode207 Setting the Service Weight for Traffic Classes208 Layer 3/4 Priority SettingsMapping Layer 3/4 Priorities to CoS Values Selecting IP Precedence/DSCP Priority209 Mapping IP Precedence14 Mapping IP Precedence 210 93 Mapping IP Precedence to Class of Service ValuesMapping Dscp Priority 21115 Mapping Dscp Priority IP Dscp Value CoS Value212 94 Mapping IP Dscp Priority to Class of Service ValuesMapping IP Port Priority 21395 Globally Enabling the IP Port Priority Status 214215 Copy Settings216 CLI This feature not supported through the CLIMapping CoS Values to ACLs 16 CoS to ACL Mapping98 Mapping CoS Values to ACLs 217Changing Priorities Based on ACL Rules 21899 Changing Priorities Based on ACL Rules 219Multicast Filtering Igmp Protocol220 221 Layer 2 Igmp Snooping and Query222 Configuring Igmp Snooping and Query Parameters223 100 Configuring Internet Group Management ProtocolDisplaying Interfaces Attached to a Multicast Router 224Specifying Interfaces Attached to a Multicast Router 225226 Displaying Port Members of Multicast Services227 103 Displaying Port Members of Multicast Services228 Assigning Ports to Multicast ServicesConfiguring Domain Name Service Configuring General DNS Server Parameters229 230 231 105 Configuring DNS232 Configuring Static DNS Host to Address Entries106 Mapping IP Addresses to a Host Name 233234 Displaying the DNS CacheWeb Select DNS, Cache 235236 Using the Command Line Interface Accessing the CLIConsole Connection Telnet Connection Entering Commands This section describes how to enter CLI commandsKeywords and Arguments Getting Help on Commands Command CompletionShowing Commands Minimum AbbreviationCommand Line Interface Using Command History Negating the Effect of CommandsUnderstanding Command Modes Partial Keyword LookupExec Commands Command ModesClass Mode Configuration Commands Mode Command Prompt Configuration Command ModesCommand Line Processing Keystroke CommandsKeystroke Function Command Groups Command Group IndexCommand Group Description Configures DNS services 286 Line Commands Line CommandsCommand Function Mode Password-thresh commandLine Syntax Login local no login LoginLogin local Line ConfigurationUsername 4-34password PasswordSyntax Password 0 7 password no password No password is specifiedLogin 4-15password-thresh Timeout login responseCLI Disabled 0 seconds Telnet 300 seconds To set the timeout to two minutes, enter this commandExec-timeout Syntax Exec-timeout seconds no exec-timeoutCLI and Telnet 600 seconds 10 minutes Password-thresh Syntax Password-thresh threshold no password-threshDefault value is three attempts Databits Silent-timeSyntax Silent-time seconds no silent-time Syntax Databits 7 8 no databitsSyntax Parity none even odd no parity ParityTo specify 57600 bps, enter this command To specify no parity, enter this commandSpeed Syntax Speed bps no speedDisconnect StopbitsStopbits 1 Syntax disconnect session-idSyntax Show line console vty Show lineEnable General CommandsGeneral Commands Syntax enable levelDisable Disable Enable passwordNone Show history ConfigureThis command restarts the system This command resets the entire systemReload This command returns to Privileged Exec mode This example shows how to reset the switchEnd ExitUse this command to exit the configuration program This example shows how to quit a CLI sessionQuit System Management Commands System Management CommandsCommand Group Function Device Designation Commands Device Designation CommandsPrompt Syntax Prompt string no promptLight unit HostnameSyntax Hostname name no hostname Syntax Light unit unitUser Access Commands User Access CommandsUsername Username Access-level Password 10 Default Login SettingsDefault is level is level Default password is super Enable passwordEnable 4-25authentication enable IP Filter Commands11 IP Filter Commands ManagementShow management 12 Web Server Commands Web Server CommandsSyntax No ip http server Default Setting Default Setting Command ModeIp http port Ip http serverIp http secure-server Syntax No ip http secure-server Default Setting13 Https System Support Ip http secure-portIp http secure-port4-42 Copy tftp https-certificate Portnumber The UDP port used for HTTPS. Range14 Telnet Server Commands Telnet Server CommandsIp telnet server Ip http secure-server4-41Server Enabled Server Port Secure Shell CommandsCommand Function Mode 15 Secure Shell CommandsSystem Management Commands Syntax No ip ssh server Default Setting DisabledIp ssh server Syntax Ip ssh timeout seconds no ip ssh timeout Ip ssh timeoutIp ssh crypto host-key generate 4-51 show ssh SecondsExec-timeout4-18 show ip ssh Ip ssh authentication-retriesIp ssh server-key size Delete public-keySyntax Delete public-key username dsa rsa Syntax Ip ssh crypto host-key generate dsa rsa Ip ssh crypto host-key generateDsa DSA Version 2 key type Rsa RSA Version 1 key type Generates both the DSA and RSA key pairsIp ssh save host-key Ip ssh crypto zeroizeSyntax Ip ssh crypto zeroize dsa rsa Syntax Ip ssh save host-key dsa rsaShow ip ssh This command displays the current SSH server connectionsShow ssh Saves both the DSA and RSA keyTerminology 16 show ssh display descriptionSyntax Show public-key user username host Show public-keyUsername Name of an SSH user. Range 1-8 characters Shows all public keys17 Event Logging Commands Event Logging CommandsLogging on Syntax No logging on Default SettingLogging history Logging history 4-57clear loggingFlash errors level 3 RAM informational level 6 18 Logging LevelsLevel Severity Name Description Logging facility Logging hostSyntax No logging host hostipaddress Hostipaddress The IP address of a syslog serverDisabled Level 7 Logging trapSyntax Logging trap level no logging trap Show logging Clear logSyntax Clear log flash ram Syntax Show logging flash ram sendmail trap19 show logging flash/ram display description Following example displays settings for the trap functionShow log 20 show logging trap display descriptionSyntax Show log flash ram 21 Smtp Commands Smtp Alert CommandsLogging sendmail host Following example shows the event message stored in RAMSyntax Logging sendmail level level Logging sendmail levelSyntax Logging sendmail source-email email-address Logging sendmail source-emailLogging sendmail destination-email Syntax No logging sendmail Default SettingLogging sendmail Syntax No logging sendmail destination-email email-addressTime Commands 22 Time CommandsShow logging sendmail Sntp client Syntax No sntp client Default SettingSntp server Sntp server 4-70 sntp poll 4-71 show sntpSyntax Sntp server ip1 ip2 ip3 Sntp poll Sntp client 4-69 sntp poll 4-71 show sntpSyntax Sntp poll seconds no sntp poll Sntp client Show sntpNone Clock timezoneCalendar set This command displays the system clockShow calendar SyntaxSystem Status Commands Show startup-config23 System Status Commands Example Related Commands Show running-configShow startup-config Show system This command displays system informationShow version Show users24 Flash/File Commands Flash/File CommandsPrivileged Exec CopyCommand Usage Following example shows how to download a configuration file Command Line Interface This command deletes a file or image DeleteDir Delete public-key Syntax Dir unit boot-rom config opcode filename This command displays a list of files in flash memoryDir 25 File Directory InformationFollowing example shows how to display all file information WhichbootBoot system Syntax Boot system unit boot-romconfig opcode filenameDir 4-87whichboot Power over Ethernet Commands 26 PoE CommandsCommand Group Function Mode Power inline compatible Power mainpower maximum allocationSyntax Power mainpower maximum allocation watts unit unit Syntax No power inline compatibleCompatible Mode Enabled Power inline Power inline maximum allocationSyntax No power inline Default Setting Low Power inline prioritySyntax Show power inline status interface Show power inline statusEthernet Unit Stack unit. Range Port Port number. Range27 show power inline status parameters Show power mainpower28 show power mainpower parameters Mainpower maximum allocation onAuthentication Sequence Authentication Commands29 Authentication Commands 30 Authentication Sequence CommandLocal Authentication loginUsername for setting the local user names and passwords Authentication enableRadius Client 31 Radius Client CommandsTimeout 5 seconds Default Setting Auth-portRetransmit Command Mode Radius-server hostRadius-server key Radius-server portSyntax Radius-server port portnumber no radius-server port 1812Radius-server retransmit Radius-server timeoutPrivileged Exec Show radius-serverTACACS+ Client 32 TACACS+ Client CommandsTacacs-server host Hostipaddress IP address of a TACACS+ serverTacacs-server key Tacacs-server portSyntax Tacacs-server port portnumber no tacacs-server port Syntax Tacacs-server key keystring no tacacs-server keyShow tacacs-server Port Security CommandsStatus Disabled Action None Maximum Addresses 33 Port Security CommandsInterface Configuration Ethernet Port security109 34 802.1X Port Authentication Commands 802.1X Port AuthenticationSyntax No dot1x system-auth-control Default Setting Dot1x defaultDot1x system-auth-control Dot1x max-reqDefault Default Command ModeDot1x port-control Force-authorizedSingle-host Dot1x operation-modeDot1x re-authentication Dot1x re-authenticateSyntax Dot1x re-authenticate interface Syntax No dot1x re-authentication Command ModeDot1x timeout quiet-period Dot1x timeout re-authperiodSeconds The number of seconds. Range Show dot1x Dot1x timeout tx-periodSyntax Show dot1x statistics interface interface Statistics Displays dot1x status for each port Interface117 State- Current state including initialize, reauthenticate Authenticator State MachineAccess Control Lists Access Control List CommandsAccess Control List Commands Masks for Access Control Lists 35 Access Control List CommandsCommand Groups Function IP ACLs 36 IP ACL CommandsSyntax No access-list ip standard extended aclname Access-list ipPermit, deny Standard ACL Access-list ip extended fragment-auto-maskStandard ACL Permit, deny Extended ACLExtended ACL No permit deny tcp127 This command displays the rules for configured IP ACLs Show ip access-listSyntax Show ip access-list standard extended aclname Permit, deny Ip access-group4-134Access-list ip mask-precedence Syntax No access-list ip mask-precedence in outMask IP ACL 4-130 ip access-group4-134 IP Mask Syntax No mask protocol131 132 Syntax Show access-list ip mask-precedence in out Show access-list ip mask-precedenceSyntax No ip access-group aclname in out Ip access-groupMap access-list ip Show ip access-groupShow ip access-list4-128 This command shows the ports assigned to IP ACLsQueue cos-map4-257 Show map access-list ip Show map access-list ipSyntax Show map access-list ip interface 37 Egress Queue Priority MappingMap access-list ip Match access-list ip38 MAC ACL Commands Match access-list ipShow marking MAC ACLsSyntax No access-list mac aclname Access-list macSyntax No permit deny Permit, deny MAC ACLMAC ACL This command displays the rules for configured MAC ACLs Show mac access-listSyntax Show mac access-list aclname Permit, deny Mac access-group4-146Mask MAC ACL 4-144 mac access-group4-146 Access-list mac mask-precedenceMAC Mask Syntax No mask pktformatThis example creates an Egress MAC ACL 145Mac access-group Show access-list mac mask-precedenceSyntax Show access-list mac mask-precedence in out Syntax Mac access-group aclname in outMap access-list mac Show mac access-groupShow mac access-list4-142 This command shows the ports assigned to MAC ACLsQueue cos-map4-257 Show map access-list mac Show map access-list macSyntax Show map access-list mac interface 39 Mapping CoS Values to MAC ACL RulesMap access-list mac Match access-list macShow access-list ACL Information40 ACL Information Show access-group Snmp CommandsThis command shows the port assignments of ACLs 41 Snmp CommandsSnmp-server Syntax No snmp-server Default SettingNone Show snmpSnmp-server community Snmp-server contactSyntax Snmp-server contact string no snmp-server contact Syntax Snmp-server location text no snmp-server location Snmp-server locationSnmp-server host 156157 158 Issue authentication and link-up-down traps Snmp-server enable trapsSnmp-server host Snmp-server engine-idThis command shows the Snmp engine ID This example shows the default engine IDShow snmp engine-id Defaultview includes access to the entire MIB tree Snmp-server view42 show snmp engine-id display description Show snmp view This command shows information on the Snmp viewsExamples This view includes MIB-2Snmp-server group 164Show snmp group Command Usage44 show snmp group display description 166Snmp-server user Default Setting168 This command shows information on Snmp users Show snmp user45 show snmp user display description 46 Interface Commands Interface CommandsDescription InterfacePort-channel channel-idRange Syntax Description string no descriptionInterface Configuration Ethernet, Port Channel Speed-duplexFollowing example adds a description to port Syntax No negotiation Default Setting NegotiationNegotiation 4-173capabilities Following example configures port 11 to use autonegotiation CapabilitiesNegotiation 4-173speed-duplex Flow control enabled Syntax No flowcontrol Default SettingFlowcontrol Negotiation 4-173speed-duplex4-172 flowcontrolSyntax No shutdown Default Setting Following example enables flow control on portAll interfaces are enabled ShutdownFollowing example disables port Switchport broadcast packet-ratePort-channel channel-idRange Default Setting This command clears statistics on an interfaceClear counters Syntax Clear counters interfaceShow interfaces status This command displays the status for an interfaceSyntax Show interfaces status interface Shows the status for all interfacesShow interfaces counters This command displays interface statisticsSyntax Show interfaces counters interface Shows the counters for all interfaces181 Syntax Show interfaces switchport interface Show interfaces switchportThis example shows the configuration setting for port Shows all interfacesField Description 47 show interfaces switchport display description48 Mirror Port Commands Mirror Port CommandsInterface Configuration Ethernet, destination port Port monitorShow port monitor This command displays mirror informationSyntax Show port monitor interface Shows all sessionsRate Limit Commands Following shows mirroring configured from port 6 to port49 Rate Limit Commands Rate-limit Interface Configuration Ethernet, Port Channel50 Link Aggregation Commands Link Aggregation CommandsGeneral Guidelines Guidelines for Creating TrunksChannel-group Syntax no lacp Default SettingLacp Syntax Channel-group channel-idno channel-group191 32768 Lacp system-priorityLacp admin-keyEthernet Interface Syntax Lacp admin-key key no lacp admin-key Lacp admin-key Port ChannelLacp port-priority Default SettingShow lacp This command displays Lacp informationPort Channel all 51 show lacp counters display description52 show lacp internal display description 197Partner 53 show lacp neighbors display description 199Address Table Commands 55 Address Table Commands54 show lacp sysid display description Mac-address-table static Mac-address- MAC addressVlan-id- Vlan ID Range Clear mac-address-table dynamic Show mac-address-tableMac-address- MAC address Mask Bits to match in the address Seconds Mac-address-table aging-timeSpanning Tree Commands 56 Spanning Tree CommandsShow mac-address-table aging-time RSTP/MSTP Syntax No spanning-tree Default Setting Spanning tree is enabledSpanning-tree Rstp Spanning-tree modeSpanning-tree forward-time 208Seconds Spanning-tree hello-timeSpanning-tree max-age 210Spanning-tree default priority Spanning-tree priorityIeee 802.1t format Long method Spanning-tree pathcost methodThis command limits the maximum transmission rate for BPDUs Spanning-tree transmission-limitCount -The transmission limit in seconds. Range Spanning-tree backup-root Spanning-tree mst-configurationSyntax No spanning-tree backup-root Default Setting Mst vlan MST ConfigurationMst instanceid priority priority no mst instanceid priority Mst priorityName Switch’s MAC addressSyntax name name Name Name of the spanning treeMax-hops RevisionSyntax revision number Number Revision number of the spanning tree. RangeSpanning-tree spanning-disabled Syntax No spanning-tree spanning-disabled Default SettingThis example disables the Spanning Tree Algorithm for port Syntax Spanning-tree cost cost no spanning-tree cost Spanning-tree costSpanning-tree edge-port Spanning-tree port-priorityPriority The priority for a port. Range 0-240, in steps Syntax No spanning-tree edge-portSpanning-tree portfast Syntax No spanning-tree portfast Default SettingSpanning-treeedge-port4-221 Spanning-tree link-typeAuto Spanning-tree mst costSpanning-tree mst port-priority4-225 Spanning-tree mst port-priorityPort-channel channel-idRange Command Mode Spanning-tree protocol-migrationSyntax Spanning-tree protocol-migration interface Syntax Show spanning-tree interface mst instanceid Show spanning-tree228 229 Show spanning-tree mst configuration57 Vlan Commands Vlan CommandsEditing Vlan Groups Vlan databaseVlan By default only Vlan 1 exists and is activeConfiguring Vlan Interfaces Vlan Database Configuration59 Configuring Vlan Interfaces Interface vlan Syntax Interface vlan vlan-idShutdown Switchport mode Syntax Switchport mode trunk hybrid no switchport modeAll ports are in hybrid mode with the Pvid set to Vlan All frame types Switchport acceptable-frame-typesSyntax No switchport ingress-filtering Default Setting Switchport ingress-filtering237 Switchport native vlan238 Switchport allowed vlanSwitchport forbidden vlan 239No VLANs are included in the forbidden list Displaying Vlan Information 240Show vlan 60 Displaying Vlan InformationFollowing example shows how to display information for Vlan 61 Private Vlan Commands241 242 Private-vlan 243244 Private-vlan associationNo private-vlan primary-vlan-idassociation Switchport mode private-vlan 245Normal Vlan Switchport private-vlan host-association Switchport private-vlan mapping246 247 Show vlan private-vlanSyntax Show vlan private-vlan community primary Gvrp and Bridge Extension Commands 62 Gvrp and Bridge Extension Commands248 249 Syntax No bridge-ext gvrp Default SettingBridge-ext gvrp Show bridge-extShow gvrp configuration Switchport gvrpSyntax No switchport gvrp Default Setting Syntax Show gvrp configuration interfaceGarp timer Shows both global and interface-specific configuration251 Syntax Show garp timer interface Show garp timerShows all Garp timers 252Priority Commands 63 Priority Commands253 Queue mode Priority Commands Layer64 Priority Commands Layer Syntax Queue mode strict wrr no queue modeQueue bandwidth 255256 Switchport priority defaultQueue cos-map 257258 65 Default CoS Priority LevelsThis command shows the current queue mode Show queue mode259 Show queue bandwidth66 Priority Commands Layer 3 Priority Commands Layer 3260 Show queue cos-map261 Syntax No map ip port Default Setting262 Syntax No map ip precedence Default SettingList below shows the default priority mapping 26367 Mapping IP Precedence to CoS Values 264 Syntax No map ip dscp Default Setting68 Mapping IP Dscp to CoS Values 265266 This command shows the IP port priority mapShow map ip port Syntax Show map ip port interface267 This command shows the IP precedence priority mapShow map ip precedence Syntax Show map ip precedence interface268 This command shows the IP Dscp priority mapShow map ip dscp Syntax Show map ip dscp interfaceIgmp Snooping Commands Multicast Filtering Commands69 Multicast Filtering Commands 70 Igmp Snooping CommandsFollowing example enables Igmp snooping Syntax No ip igmp snooping Default Setting270 Ip igmp snooping271 Following configures the switch to use Igmp VersionIp igmp snooping version Igmp Version272 Show ip igmp snoopingShow mac-address-table multicast 71 Igmp Query Commands Layer Igmp Query Commands Layer273 Ip igmp snooping querier274 Ip igmp snooping query-countTimes Following shows how to configure the query count to 275Ip igmp snooping query-interval Seconds The report delay advertised in Igmp queries. Range 276Ip igmp snooping query-max-response-time Switch must use IGMPv2 for this command to take effect 277Ip igmp snooping router-port-expire-time 72 Static Multicast Routing Commands Static Multicast Routing Commands278 Ip igmp snooping vlan mrouter279 Displays multicast router ports for all configured VLANsShow ip igmp snooping mrouter Syntax Show ip igmp snooping mrouter vlan vlan-id73 IP Interface Command Syntax IP Interface Commands280 Ip address281 Interface Configuration VlanSyntax Ip default-gateway gateway no ip default-gateway Ip default-gateway282 Ip dhcp restartShow ip interface 283284 This command has no default for the hostShow ip redirects Ping285 DNS Commands 74 DNS Commands286 Ip host 287No static entries This example maps two address to a host nameClear host 288Ip domain-name Syntax Clear host name289 Ip domain-listSyntax No ip domain-list name 290 Ip name-serverIp domain-name4-288 291 Syntax No ip domain-lookup Default SettingIp domain-lookup Ip domain-name4-288 ip domain-lookup4-291292 Show hostsIp domain-name4-288 ip name-server4-290 This command displays entries in the DNS cache This command displays the configuration of the DNS server293 Show dns294 This command clears all entries in the DNS cacheClear dns cache 75 Show DNS Output DescriptionAccess Control Lists AuthenticationDhcp Client Port Configuration PoEAdditional Features Class of ServicePort Trunking Spanning Tree ProtocolSNMPv3 StandardsManagement Information Bases Problems Accessing the Management Interface Table B-1 Troubleshooting ChartSymptom Action Cannot access Using System Logs Troubleshooting Glossary-1 Glossary-2 Glossary-3 Glossary-4 Glossary-5 Glossary-6 Glossary-7 Glossary-8 Virtual LAN VlanXModem Index-1 IndexIgmp Index-2Index-3 Index-4 Page For Technical SUPPORT, Call