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(device name)# show cdp neighbors. Note: This command will show the names of other devices, which ports are connecting the devices, model name/number, and features of the device. [1] To show the traffic that is passed between the CDP devices: (device name)# show cdp traffic. These commands can help mitigate or detect CDP attacks, such as CDP ...
Verifying the configuration of the administrative distance is done on Cisco equipment using the show ip route command in privileged exec mode on the console of the Cisco router. [8] [9] In the example shown below, the administrative distance is 1.
Each Cisco device that supports CDP stores the information received from other devices in a table that can be viewed using the show cdp neighbors command. This table is also accessible via Simple Network Management Protocol (SNMP). The CDP table information is refreshed each time an announcement is received, and the hold time for that entry is ...
The Dynamic Trunking Protocol (DTP) is a proprietary link layer protocol developed by Cisco Systems for the purpose of negotiating trunking on a link between two VLAN-aware switches, and for negotiating the type of trunking encapsulation to be used. VLAN trunks formed using DTP may utilize either IEEE 802.1Q or Cisco ISL trunking protocols. [1]
Information about the IOS version and feature-set running on a Cisco device can be obtained with the show version command. [6] Most Cisco products that run IOS also have one or more "feature sets" or "packages", typically eight packages for Cisco routers and five packages for Cisco network switches.
Cisco's first implementation of this protocol was introduced in version 10 of their router software. [1] It is implemented through the use of the router configuration commands ip helper-address and ip forward-protocol. ip helper-address
It is based on Wind River Linux and is inter-operable with other Cisco operating systems. [citation needed] The command-line interface of NX-OS is similar to that of Cisco IOS. [2] Recent NX-OS has both Cisco-style CLI and Bash shell available. On NX-OS 7.0(3)I3, the output from uname with the -a command line argument might look like the text ...
Cisco Embedded Event Manager (EEM) is a feature included in Cisco's IOS operating system (and some other Cisco OSes such as IOS-XR, IOS-XE, and NX-OS) that allow programmability and automation capabilities inside the device. EEM allows the behavior of a Cisco device to adapt to specific user requirements by allowing scripting, thresholding ...