Besides that it allows you to write the received packets locally in a file, so that you can analyse that offline with the Wireshark.įor the Linux admins this tool is a part of the traditional toolkit, whereas for the network engineers that is not daily used. It allows you to dump all the received packets or selectively choose only the necessary ones based on the certain criteria, such as protocol type, port number, IPv4 or IPv6 address and so on. No doubts tcpdump is a powerful tool in your arsenal, if you know how to use that. To do the packet capture, we have one of tool, which is built-in in the wast majority of Linux distributions (even in Mac OS), which is called tcpdump. It is also useful to do that on the intermediate devices if possible. To figure out, if the packets are being sent and received, we need to to do packet capture on the our host (server, container, virtual machine, laptop, etc) at least. If the latter is not the case, we start doing more in-depth troubleshooting. It is very often, when some application is not working, we are trying to see, if they send the packets to other part of application and if the response packets are coming back. Having visibility in what is going on the wire is one of the key components of the successful troubleshooting. Moreover, we are running our trainings for 2 years already and constantly adopting them to the changes happening in the automation world. On top to that, you learn a lot of infrastructure skills such as building and managing Linux, KVM and Docker. This knowledge comes with a lot of different exercises with direct console as well as Ansible/Python and Bash scripts. No matter what those vendors are, the automation principles, tools and protocols stay the same and that is what you will learn with us: the full spectre of the automation approaches starting from the text-based automation used in the hyper scalers with the full configuration templated till the model-driven automation with NETCONF/RESTCONF/gNMI loaded with YANG data models for Cisco, Nokia, Arista and Cumulus. That’s what our Live Network Automation Training (10 weeks) and Automation with Nornir (2 weeks) are all about: to show you real automation in a real environment with multiple vendors together.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |