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SD-WAN

Using Python to Calculate Cisco SD-WAN Tunnel Numbers – Part 2

In the first post I shared with you my code to calculate tunnel numbers in Cisco SD-WAN. I’m a beginner in Python so I thought it would be a great learning experience to have someone experienced in Python, such as

ddib May 17, 2022May 17, 2022 Python 3 Comments Read more

Using Python to Calculate Cisco SD-WAN Tunnel Numbers – Part 1

When using Cisco SD-WAN on IOS-XE, it uses tunnel interfaces to configure parameters of the implementation. There is a mapping between what interface the tunnel is sourcing from and the name of the tunnel interface. For example, if the tunnel

ddib May 14, 2022May 14, 2022 Python 3 Comments Read more

Choosing SD-WAN Vendor – Have You Found the Tradeoff?

When I studied for my CCDE, I had the good fortune of receiving mentoring from Russ White. Something he taught me, that I really took to heart, is that in every design and choice you make, there is a tradeoff.

ddib December 26, 2019December 26, 2019 SD-WAN 3 Comments Read more

How Difficult is SD-WAN?

In a recent Packet Pushers Heavy Networking episode, Ethan and Greg discussed how difficult SD-WAN is, and why you shouldn’t outsource your SD-WAN to a MSP. So, how difficult is really SD-WAN? Now, this is of course going to depend

ddib November 11, 2019November 11, 2019 SD-WAN 2 Comments Read more

When Is Something SD-WAN?

A couple of days ago, I wrote on LinkedIn asking you what a SD-WAN solution should consist of. https://www.linkedin.com/posts/danieldib_sdn-sdwan-wan-activity-6583614108971655168-BH8x The post was meant to create a discussion and there were a lot of great answers. Some of the features are

ddib October 1, 2019October 1, 2019 SD-WAN 2 Comments Read more

The Tale of the Mysterious Traceroute

If you follow me on Twitter ( https://twitter.com/danieldibswe), you know I have been doing a lot of SD-WAN lately and I recently built my own lab. In this lab, I wanted to try a feature known as service chaining. What

ddib August 20, 2019August 20, 2019 Traceroute, Troubleshooting 2 Comments Read more

SD-WAN – Glorified DMVPN?

I had an interesting discussion with Jon Cooper in the Network Collective Slack. The discussion was around SD-WAN. We were discussing if SD-WAN is just a “glorified DMVPN” or if it’s something more than that. Note that this was a

ddib December 28, 2018December 28, 2018 SD-WAN 6 Comments Read more

General – Challenges in Load Balancing Traffic

For the last year I have been working a lot with IWAN which is Cisco’s SD-WAN implementation (before Viptela acquisition). One of the important aspects of SD-WAN is to be able to load balance the traffic. Load balancing traffic is

ddib October 21, 2017October 21, 2017 Network Design, Routing 3 Comments Read more

General – Happy New Year!

Happy new year to all the readers of the blog! I’ve been lacking the time to update the blog lately which I’m sorry for. Work is keeping me busy with some interesting projects. I hope to get a bit more

ddib January 8, 2017 Announcement No Comments Read more

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