What is lldp multicast

You can configure the amount of time for LLDP packets to hold the information before discarding it, the frequency of LLDP updates, and the initialization delay time. The following commands are optional and can be performed in any order:. Simply put the no form of each of the LLDP commands to return to the default setting. The two most important commands used for monitoring would be the sh lldp and sh lldp neighbors.

The sh lldp command will display all the LLDP characteristics that we set earlier in the global configuration and the sh lldp neigh will show us all the neighboring devices connected to our local system.

Remember that the lldp run command must be issued on each of the connected network devices for it to be displayed in the sh lldp neigh command. As you can see, all the directly connected devices are being shown with their capability codes, local and neighboring port and their corresponding hold timer.

There is so much more to LLDP and how it is being implemented based on different topologies, devices, and how the administrator decides to use LLDP to manage and monitor the network.

For now we wanted to give you a good introduction to LLDP and its basic configuration on a small network. Very well constructed and in detail information on LLDP. I look forward to read your articles on other networking topics. Your email address will not be published. Notify me of followup comments via e-mail. You can also subscribe without commenting. This site uses Akismet to reduce spam. Learn how your comment data is processed. RouterFreak is a blog dedicated to professional network engineers.

Configuration Tips. Katrina Gonzales. Share on facebook. Share on twitter. Share on linkedin. Share on whatsapp. Share on telegram. Table of Contents. Katrina Gonzales is a blogger, a technical writer and a Cisco-certified Network Engineer. Passionate about technology and innovation. She now works as a Network Security Specialist. What do you think about this article?

Multicast March 1, at am. Alex December 14, at am. You can also view wiki definion here. To discover a neighbour device, Link Layer Discovery Protocol must be enabled both on the discovering device and the discovered device.

With this protocol, ethernet devices advertise their identification, configuration etc. As we mentioned before, there are many Neighbour Discovery Protocols and they are vendor specific. It is independent from the brand of the device used. There are some specific times of this protocol as other protocols. Theese aere Hello Timer and Dead Times.

Here, in this article, our main focus is the classic one. As we have mentioned above, Link Layer Discovery Protocol must be enabled on the devices firstly. And with this data, it builds the network map.