ifconfig.it

Where the vNIC meets the Network

NFD16 day two - Apstra

Day two of NFD16 started with Apstra and their intent-based networking system. Intent concept is not as broad as SDN but still vendors have different views of this meaning. According to Apstra an intent is “the definition of the expected outcome”. The sum of the intents of a network is the source of truth. Read Sasha Ratkovic blog post about the definition of Intent Based Networking. The checklist he suggest can be very useful to compare different solutions and spot intent washing strategies.

NFD16 day one - Arista

Second part of Tech Field Day NFD16 day 1 continues with Arista. Getting ready for @AristaNetworks #NFD16 pic.twitter.com/SCWXVGsR2l — Gian Paolo (@gp_ifconfig) September 13, 2017 Arista’s presentation included 400G (hist: it’s fast!), EOS programmability, Network Automation and Telemetry, Routing Architecture Transformations. All video recording are in the youtube channel of TechFielDay. EOS Programmability Ken Duda (Founder, CTO, and Senior VP of Software Engineering) did a great session about EOS programmability explaining the reason of some technical choices and the available options.

NFD16 day one - Veriflow

First day at Tech Field Day NFD16, I’m quite excited to be here among fellow network engineers to share our views on products and technologies. I’m planning to post my takeaways for each vendor with variable lengths based on my knowledge and interest of the specific product. Today’s first presenter is Veriflow. Let’s see what Continuous Network Verification is and how it can help to make networks more robust and secure.

AirPiConsole part two

Welcome back to AirPiConsole blog post, this is part two. If you read part one and followed the configuration steps you should now have a fully working Raspberry Pi Zero W connected to your WiFi network. You should also be able to connect via Bluetooth to get a console connection without knowing the IP address of the Raspi. Now it’s time to move on and start to actually connect to the serial ports.

AirPiConsole part one

As a network engineer I spend a lot of time with my laptop connected via serial cable to various devices. Physical serial connection is needed for initial device setup and sometimes per customer’s security policy I can’t access the network, so I can only use out-of-band management. I also configure many devices at staging lab that I call the “Theory room” because you know, in theory everything works ;-)

NFD16 delegate

I’m happy to announce I’ll join a great team of professionals for 3 days of pure networking awesomeness in Silicon Valley: Great news: I'm a #NFD16 delegate! https://t.co/WuziopJtKc Can't wait to join such a great team of professionals! — Gian Paolo (@gp_ifconfig) August 11, 2017 NFD16 is part of Tech Field Day events where vendors and professionals meet to share and discuss about the IT world, products, trends and future.

HP Procurve to Cisco switchport migration with Python and Netmiko

Summertime usually means a busy period for Network Engineers, customers are on holidays and we have the opportunity to performs all the changes that impact network connectivity. For me this usually means core switch replacement. Today I was moving a configuration from an HP8200 to a Cisco 4500, taking care of all the details of ports, trunks, vlans. From this: to this: When a task is manual, boring, repetitive and error-prone my automation skills came to help.

Networkcareer.net interview

My interview was published today on Networkcareer.net, the latest project from Daniel Dib and Kim Pedersen. It’s available online HERE.

Ansible and IOS quick start

Ansible has been around for I while but I didn’t had a chance to play with it so far. Now the time has come: I manage enough IOS devices with homogeneous configurations in multiple sites without Cisco Prime. Any change is a pain, it’s time to automate all the things! My environment I run Ansible inside Bash on Windows, I don’t see any issue or difference than running in an actual Linux box or docker/vagrant/whatever and it permits a better integration with the tools I already use.

TAC Security Workshop - Poland

This week I attended and event organized by Cisco TAC in Krakow. I’ve been in may Cisco events (Live, PVT, Pint etc.) but It was the first time for me at a TAC workshop and I was curious about it. The Agenda Agenda was clear: tree days with TAC engineers presenting best practices for installation and configuration with a clear focus on troubleshooting methods and tools. I was not disappointed by the contents: marketing was reduced to minimum, all the presenters were skilled TAC engineers and all the sessions were very detailed.