What does show CDP neighbors mean?
The show cdp neighbors detail command reveals the IP address of a neighboring device. The show cdp neighbors detail command will help determine if one of the CDP neighbors has an IP configuration error. To disable CDP globally, use the global configuration command no cdp run.
How do I read CDP neighbors?
To display information about neighbors, use the show cdp neighbors privileged EXEC command. (Optional) Type of the interface connected to the neighbors about which you want information. (Optional) Number of the interface connected to the neighbors about which you want information.
What can you see after issuing show CDP neighbor command?
From the output of the show cdp neighbors command above, you can see the neighboring devices (capability, i.e., router or switch), model number (platform), your port connecting to that device (local interface), and the port of the neighbor connecting to you (port ID).
What is the difference between the command show CDP neighbors detail and show CDP neighbors?
Port ID :- Our device is connected with remote device on this port. This is a CDP message sending port. show cdp neighbors command provides brief information about all connected devices. Use show cdp neighbors detail or show cdp entry * commands to display additional information about connected devices.
What is port ID in CDP?
Port ID – the neighbor device’s interface on which the CDP packets were sent, in this case Fa0/1.
What does the show IP OSPF neighbor command Reveal?
Displays detailed neighbor information. Specifies displays only the entry in the specified index position in the neighbor table. For example, if you enter “1”, only the first entry in the table is displayed.
What are three features of CDP?
CDP runs over the data link layer only. Therefore, two systems that support different network-layer protocols can learn about each other. Mismatched Port-duplex states between connected devices….Information.
| (config)# cdp run | Enables CDP globally on device. |
|---|---|
| (config-if)# no cdp enable | Disables CDP on an interface device. |
What is a use of Cisco Discovery Protocol?
Cisco Discovery Protocol (CDP) is a proprietary Data Link Layer protocol developed by Cisco Systems in 1994 by Keith McCloghrie and Dino Farinacci. It is used to share information about other directly connected Cisco equipment, such as the operating system version and IP address.
What is LLDP CCNA?
Link Layer Discovery Protocol (LLDP) is a vendor independent link layer protocol used by network devices for advertising their identity, capabilities to neighbors on a LAN segment.
Is CDP Cisco proprietary?
CDP is a Layer 2 proprietary protocol that is default-enabled on all Cisco devices including routers and switches and runs on all LAN and WAN media that support Subnetwork Access Protocol (SNAP).
How do I show my OSPF neighbor?
show ip ospf neighbor
- Syntax. show ip ospf neighbor [ extensive | num | router-id A.B.C.D ]
- Parameters. extensive. Displays detailed neighbor information. num. Specifies displays only the entry in the specified index position in the neighbor table.
- Modes. User EXEC mode.
- Usage Guidelines.
What is OSPF database?
The OSPF database contains all LSAs that describe the network topology. The show ip ospf database command displays the content of the LSDB and verifies information about specific LSAs. The output reveals the presence of different LSA types.