CCNA 7.3.b: Using Cisco Discovery Protocol or LLDP for device discovery

Overview:

CDP or LLDP can be used to discover details about neighboring devices

Study Notes:

• CDP is covered in-depth in section 2.8.a: CDP
• LLDP is covered in-depth in section 2.8.b: LLDP
• To use CDP to discover neighboring devices, CDP must be enabled on both devices for neighbor information to be exchanged
• CDP is enabled by default on Cisco devices
• To use LLDP to discover neighbor devices, LLDP must be enabled on both devices for neighbor information to be exchanged
• LLDP is not enabled by default on Cisco devices

CDP commands

config t
  cdp run
  show cdp neighbors
  show cdp interface
  show cdp entry *
  no cdp run

LLDP commands

config t
  lldp run
  show lldp neighbor
  no lldp run

PacketTracer Lab: CCNA-7.3.b-Using-CDP-or-LLDP-for-device-discovery.pkt

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