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31 Cards in this Set
- Front
- Back
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To turn CDP on or off on the switch
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switch (config)# [no] cdp run
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How do you manually enable/ disable CDP on a interface
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switch (config-if)# [no] cdp enable
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To set the CDP holdtimer. The amount of time CDP holds onto neighbor information before discarding it. Default 180 secs
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switch (config)# [no] cdp holdtime [10 - 255]
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To set the CDP Timer, which is how often CDP packets are sent. Default 60 seconds
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switch (config)# [no] cdp timer [5 - 254]
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To display all interfaces that have CDP enabled
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switch# show cdp all
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To display the CDP global parameters.
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switch# show cdp global
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Shows brief table of directly connected neighbours including local port type & number, holdtime, neighbours device name, h/w type & model and remote port type & number
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switch# show cdp neighbors
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Shows a lot more info including, IOS release, interface settings, VLAN ID, duplex mode, VTP Domain name and ip address
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switch# show cdp neighbors detail
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Displays information about a specific neighbor. Display can be limited to protocol or version information.
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switch# show cdp entry [entry-name] [protocol| version]
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Displays information about interfaces on which CDP is enabled.
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switch# show cdp interface [type number]
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What's default time for idle CAM entries are kept before being deleted
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300 seconds (5mins)
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The cmd to change the MAC/ CAM table aging time
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switch(config)# mac address-table aging-time [secs]
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To configure static CAM table entries
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switch(config)# mac address-table static [mac] vlan [vlan-id] interface [type] [mod/num]
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The cmd to view the CAM table contents
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switch# show mac address-table dynamic [address [mac] | interface [type] [mod/num] | vlan [vlan-id]]
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The cmd to clear CAM table entries
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switch(config)# clear mac address-table dynamic [address [mac] | interface [type] [mod/num] |vlan {vlan-id]]
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The cmd for mac address used with older Cisco IOSs
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mac-address-table
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To select a single switch port
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switch(config)# interface [type] [mod/num]
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To select a range of switch ports in either list or range
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switch(config)# interface range [type] [mod/num] , [type] [mod/first num] - [last num]
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To define a macro that contains a list of interfaces, range of interfaces or both
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switch(config)# define interface-range [name] [type] [mod/num] , [type] [mod/first num] - [last num] , etc
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To select the macro
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switch(config)# interface range macro [name]
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To give a description to a port
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switch(config-if)# [no] description [description string]
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To set the port speed
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switch(config-if)# speed [10 | 100| 1000| auto]
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To set the port duplex mode
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switch(config-if)# duplex [auto| full | half]
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To set the conditions that the switch will detect to put a port in errdisable state. Configured globally, apply to all ports
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switch(config)# [no] errdisable detect cause [all | [cause-name]]
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To have a switch automatically re enable an errdisable port from a specific cause.
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switch(config)# errdisable recovery cause [all | [cause-name]]
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If any errdisable causes are configured for automatic recovery, how long does the port stay down for by default
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300 seconds
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To change the errdisable recovery timer
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switch(config)# errdisable recovery interval [seconds]
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To manually recover a port from a errdisable state
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switch(config-if)# shutdown then switch(config-if)# no shutdown
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To see a list of all ports in the errdisable state
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switch# show interfaces status errdisabled
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To see complete information about the switch port including current speed and duplex mode
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switch# show interfaces [type] [mod/num]
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To see a list of all ports and a brief summary of all interfaces states
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switch# show interfaces status
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