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33 Cards in this Set
- Front
- Back
What is the purpose of the Cisco Discovery Protocol (CDP)?
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It is used to dynamically discover information about neighboring devices.
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What is the command to see the neighbors of a device using CDP?
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show cdp neighbors
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What does a router listen for to discover information while using CDP?
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CDP advertisements
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(True/False) Cisco Discovery Protocol (CDP) relies on Layer 3 protocols.
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False
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For the Cisco Discovery Protocol (CDP) to work, the data link layer must support use of what protocol header?
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Subnetwork Access Protocol (SNAP) header
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(True/False) The Cisco Discovery Protocol (CDP) can still work even if IP does not work.
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True
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List the type of information learned by CDP:
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- Device Name
- Local Interface - Holdtime - Capability - Platform - Port ID - VTP Management Domain Name (CDP version 2 only) - Native VLAN (CDP version 2 only) - Full/Half Duplex (CDP version 2 only) |
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What is the default interval for the CDP update interval timer?
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60 seconds
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CDP requires that a device send advertisements on a regular, periodic time cycle. What is this called?
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CDP update interval
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What defines how long the information in a CDP advertisement should be considered valid?
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CDP holdtime
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Which "show cdp" command lists one summary line of information about each neighbor, or just the neighbor found on a specifc interface if an interface was listed.
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show cdp neighbors [type number]
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What does the following CDP command do:
show cdp neighbors detail |
Lists one large set (approx 15 lines) of information, one set for every neighbor
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What "show cdp" command can be used to see detailed information about a single specific neighbor?
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show cdp neighbors detail [name]
or show cdp entry [name] |
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Which CDP command states whether CDP is enabled globally and lists the default update and holdtime timers?
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show cdp
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Which CDP command states whether CDP is enabled on each interface, or a single interface if the interface is listed, and states update and holdtime timers on those interfaces?
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show cdp interface [type number]
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What does the following command show:
show cdp traffic |
Lists global statistics for the number of CDP advertisements sent and received
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What command is used to reset the counters shown in the "show cdp traffic" command to 0?
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clear cdp packets
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What does the following command do:
debug cdp packets |
Enables a debug that generates one message each time a CDP advertisement is sent or received
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What command is used to enable cdp?
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cdp run
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What command is used to disable cdp?
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no cdp run
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What command is used to enable cdp on an interface?
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cdp enable
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What is command is used to disable cdp on an interface?
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no cdp enable
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(True/False) CDP can be used to create a map of an internetwork.
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True
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What command is used to delete the CDP table of information about neighbors?
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clear cdp table
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What command is used to display information about the types of debugging that are enabled for your router?
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show debugging
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What command displays informational messages in real time when the status od a CDP neighbor changes?
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debug cdp adjacency
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Which command displays informational messages regarding any event that occurs with CDP?
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debug cdp events
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Which command displays informational messages each time a router learns IP information with CDP?
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debug cdp ip
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A global configuration command that sets the CDP update time
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cdp timers
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A global configuration command that specifies the CDP holdtime
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cdp holdtime
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When a user uses telnet to connect to a router, the router provides what type of line for the connection?
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VTY line
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List three main reasons for the failure of opening a telnet session:
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- IP routing is not working
- Name resolution is not working - VTY password is not confgured |
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What is the key sequence to suspend a telnet session?
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Ctrl+Shift+6, let go of all three keys and then press "x" and let go
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