Tag Archives: automation

Cisco DNAC Journey Part 1 – Expectations and Reality

We’ve just finished Cisco DNA Assurance PoV… what can I say about it? Not much… It feels like a right product, but way too young for mass adoption. We only deployed the appliance itself with the aim to try DNA Assurance. However, we faced a number of issues from Day 1 even though it was a mentored install. I just thought I will share some information and maybe it will make someone’s life easier 🙂

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EEM Tricks: Automatic Failover (Internet)

When our company decided to deploy local Internet breakouts in every single office (cloud readiness) there was a design concern around high availability. Even though our firewalls are being deployed using HA pair, a decision has been made not to overdesign service provider (SP) edge sublayer. In particular, we decided not to deploy more than one external switch. Even if we did, 99% of branches would have only one circuit deployed using single physical media. If switch and/or ISP fail, then manual intervention would be required (recabling, or routing adjustments)… In presence of regional Internet breakouts it was an obvious choice to include these into design as failover component. The question was… how to make users experience as seamless as possible if local Internet breakout fails? EEM was there to help! Read more …