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.Related Commands Command Descriptionshow running-config Displays the running configuration on the switch.speed Specifies the speed of a Fast Ethernet port.Catalyst 2900 Series XL and Catalyst 3500 Series XL Command Reference78-12155-042-35Chapter 2 Cisco IOS Commandserrdisable detect causeerrdisable detect causeUse the errdisable detect cause global configuration command to enable error disable detection for aUniDirectional Link Detection (UDLD) cause.Use the no form of this command to disable the errordisable detection feature.errdisable detect cause {udld}no errdisable detect cause {udld}Syntax Description udld Enable error detection on udld.Defaults Detection is enabled.Command Modes Global configurationCommand History Release ModificationRelease 12.0(5)WC5 This command was first introduced.Usage Guidelines A cause (udld) is defined as the reason why the error-disabled state occurred.When a cause is detectedon an interface, the interface is placed in error-disabled state, an operational state similar to link-downstate.Use the errdisable recovery global configuration command to set a recovery mechanism for the cause.The switch re-enables the interface and tries the operation again when all causes have timed out.If youdo not set a recovery mechanism, you must enter the shutdown and then the no shutdown commandsto manually recover an interface from the error-disabled state.Note This feature is not available on the Catalyst 2900 LRE XL switches.Examples This example shows how to enable error disable detection for the udld error-disable cause:Switch(config)# errdisable detect cause udldYou can verify your setting by entering the show errdisable detect user EXEC command.Related Commands Command Descriptionshow errdisable detect Displays errdisable detection information.Catalyst 2900 Series XL and Catalyst 3500 Series XL Command Reference78-12155-042-36Chapter 2 Cisco IOS Commandserrdisable recoveryerrdisable recoveryUse the errdisable recovery global configuration command to configure the recovery mechanismvariables.Use the no form of this command to return to the default setting.errdisable recovery {cause {udld} | {interval interval}no errdisable recovery {cause {udld} | {interval interval}Syntax Description cause Enable error disable to recover from a specific cause.udld Enable the timer to recover from the UniDirectional Link Detection (UDLD)error-disable state.interval interval Specify the time to recover from the specified error-disable state.The rangeis 30 to 86400 seconds.The same interval is applied to all causes.Defaults Recovery is disabled for all causes.The default recovery interval is 300 seconds.Command Modes Global configurationCommand History Release ModificationRelease 12.0(5)WC5 This command was first introduced.Usage Guidelines A cause (udld) is defined as the reason why the error-disabled state occurred.When a cause is detectedon an interface, the interface is placed in error-disabled state, an operational state similar to link-downstate.Use this command to set a recovery mechanism for the cause.The switch re-enables the interface andtries the operation again when all causes have timed out.If you do not set a recovery mechanism, youmust enter the shutdown and then the no shutdown commands to manually recover an interface fromthe error-disabled state.Note This feature is not available on the Catalyst 2900 LRE XL switches.Catalyst 2900 Series XL and Catalyst 3500 Series XL Command Reference78-12155-042-37Chapter 2 Cisco IOS Commandserrdisable recoveryExamples This example shows how to enable the recovery timer for the udld error-disable cause:Switch(config)# errdisable recovery cause udldThis example shows how to set the timer to 500 seconds:Switch(config)# errdisable recovery interval 500You can verify your settings by entering the show errdisable recovery privileged EXEC command.Related Commands Command Descriptionshow errdisable recovery Displays errdisable recovery timer information.Catalyst 2900 Series XL and Catalyst 3500 Series XL Command Reference78-12155-042-38Chapter 2 Cisco IOS CommandsexitexitUse the exit VLAN database command to implement the proposed VLAN database, to increment thedatabase configuration number, to propagate it throughout the administrative domain, and to return toprivileged EXEC mode.exitSyntax Description This command has no arguments or keywords.Defaults No default is defined.Command Modes VLAN databaseCommand History Release Modification11.2(8)SA4 This command was first introduced.Usage Guidelines The exit command implements all the configuration changes that you made since you entered VLANdatabase mode and uses them for the running configuration.This command returns you to privilegedEXEC mode.Examples This example shows how to implement the proposed VLAN database and to exit to privileged EXECmode:Switch(vlan)# exitSwitch#You can verify the previous command by entering the show vlan brief user EXEC command.Catalyst 2900 Series XL and Catalyst 3500 Series XL Command Reference78-12155-042-39Chapter 2 Cisco IOS CommandsexitRelated Commands Command Descriptionabort Abandons the proposed VLAN database, exits VLAN database mode, andreturns to privileged EXEC mode.apply Implements the proposed VLAN database, increments the databaseconfiguration revision number, propagates it throughout the administrativedomain, and remains in VLAN database mode.reset Abandons the proposed VLAN database and remains in VLAN database mode.Resets the proposed database to the currently implemented VLAN database onthe switch.show vlan Displays the parameters for all configured VLANs in the administrativedomain.shutdown vlan Shuts down (suspends) local traffic on the specified VLAN.vlan database Enters VLAN database mode from the command-line interface (CLI).Catalyst 2900 Series XL and Catalyst 3500 Series XL Command Reference78-12155-042-40Chapter 2 Cisco IOS CommandsflowcontrolflowcontrolUse the flowcontrol interface configuration command on Gigabit Ethernet ports to control traffic ratesduring congestion.Use the no form of this command to disable flow control on the port.flowcontrol {asymmetric | symmetric}no flowcontrolSyntax Description asymmetric Enable the local port to perform flow control of the remote port.If the local portis congested, it can request the remote port to stop transmitting.The local portrequests that the remote port begin transmitting after the congestion clears.symmetric Enable the local port to perform flow control only if the remote port can alsoperform flow control of the local port [ Pobierz całość w formacie PDF ]

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