Which Statement Is True About Cdp On A Cisco Device?

Which Statement Is True About Cdp On A Cisco Device?

The main concept in CDP is that it can be able to disable on any specific interface or it can be disabled globally. Today, let us learn about what actually the CDP is and the working of the CDP on a Cisco device. The term CDP stands for cisco discovery protocol. The CDP is a protocol that is commonly discussed in Cisco devices. It is like a cisco proprietary protocol that normally works at layer 2 of the OSI model.

Layer 2 of the OSI model is nothing but the data link layer. The main work of this cisco discovery protocol is to learn about all the devices which are directly connected to their physical interface. Or it can be connected across the VLANs. By using this cisco discovery protocol, we can able to know the information about the IP addresses, what is the port is being in use, what is equipment is being in use, and many more. All this information is useful to the people or the users who are new to the network, we can also see where the device uplinks were, where all the switch-up links to the routers.

The cisco discovery process will be the best practice in order to set the whole timer. It is almost three times greater than the cisco discovery packet. The cisco discovery packet is like a frame that we send. It can only take up to 60 seconds to gain all the information in it. When the router can receive the cisco discovery protocol packet, it can able to respond with all the information or details. Now, let us take an example to understand this concept in detail. Let us consider router 1, router 2, and router 3. When all these routers are get connected to each other, the cisco discovery protocol helps to know, which router is connected at what location. If the CDP is not get enabled, we cannot able to see the location of the routers where they are connected or to whom they are connected with.

In order to enable the cisco discovery protocol, we need to use the command called “config t”, this will allows the CDP to be enabled. The cisco discovery protocol can also be dangerous, any user can able to access the network, they can simply connect like a virtual router, which is quite harmful sometimes. If any malicious user is accessed, they will know all the information like Ip details, port information, and also about version numbers. So it can be a bit risky when coming to security if we want to run the cisco discovery router at an open network. So we need to enable the CDP only one some of the specific ports which are risk-free. We need to enable the cisco discovery protocols only on the devices which we have known or on the device where anyone cannot be simply plugged into it. This is a much better thing to do if we want to avoid any malicious users.