CISCO交换机命令全集加说明2

　　
　　Default
　　180 seconds
　　Command Mode
　　Global configuration
　　Example
　　This example shows how to set the CDP holdtime to 15 seconds.
　　hostname(config)# cdp holdtime 15
　　Related Commands
　　cdp (advertise-v2)
　　cdp (enable)
　　cdp (timer)
　　show cdp (interface)
　　show cdp (neighbors)
　　cdp (timer)
　　Use the cdp timer global configuration command to specify the rate at which Cisco Discovery Protocol (CDP) packets are sent. Use the no cdp timer command to reset the CDP rate to the default value.
　　cdp timer timer
　　no cdp timer
　　Syntax Description
　　timer Number between 5 and 900 seconds.
　　
　　Default
　　60 seconds
　　Command Mode
　　Global configuration
　　Example
　　This example shows how to set the CDP packet rate to once in 5 seconds.
　　hostname(config)# cdp timer 5
　　Related Commands
　　cdp (advertise-v2)
　　cdp (enable)
　　cdp (holdtime)
　　show cdp (interface)
　　show cdp (neighbors)
　　cgmp
　　Use the cgmp global configuration command to enable Cisco Group Management Protocol (CGMP) functionality on a switch. Use the no cgmp command to disable CGMP.
　　cgmp
　　no cgmp
　　Syntax Description
　　This command has no arguments or keywords.
　　Default
　　CGMP is enabled.
　　Command Mode
　　Global configuration
　　Example
　　This example shows how to enable CGMP on a switch.
　　hostname(config)# cgmp
　　Related Commands
　　cgmp (hold-time)
　　cgmp (leave-processing)
　　cgmp (remove)
　　clear (cgmp)
　　show (cgmp)
　　cgmp (hold-time)
　　Use the cgmp hold-time global configuration command to set the Cisco Group Management Protocol (CGMP) hold time. Use the no cgmp hold-time command to reset the default hold time.
　　cgmp hold-time hold_time
　　no cgmp hold-time
　　Syntax Description
　　holdtime Number between 5 and 900 seconds.
　　
　　Defaults
　　Default hold time is 600 seconds.
　　Command Mode
　　Global configuration
　　Example
　　This example shows how to set the CGMP hold time to 40 seconds.
　　hostname(config)# cgmp hold-time 40
　　
　　This example shows how to reset the CGMP hold time to its default value.
　　hostname(config)# no cgmp hold-time
　　Related Commands
　　cgmp
　　cgmp (leave-processing)
　　cgmp (remove)
　　clear (cgmp)
　　show (cgmp)
　　cgmp (leave-processing)
　　Use the cgmp (leave-processing) global configuration command to enable Cisco Group Management Protocol (CGMP) Fast Leave processing. The no form of the command disables CGMP Fast Leave processing.

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