Over 30 years of real-world experience in network design, implementation, support, and troubleshooting

The blog has articles, network and data center design considerations, practical tips, how-tos, and real cases.

The topics include Cisco IOS, IOS-XE, IOS-XR, NX-OS, Cisco ASA, Firepower, FortiOS, and other network operating systems, as well as Cisco CML and EVE-NG testing labs.

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cisco champ 2025

Cisco Nexus vPC best practices

There are two detailed documents describing vPC best practices, designs, and implementations of various high-availability scenarios.

Content will be available very soon; preparation is in progress. Please have patience.

Nexus 9000 vPC & Fortigate HA cluster

There is one major exemption in the configuration of the 9000 vPC & Fortigate HA cluster.

Content will be available very soon; preparation is in progress. Please have patience.

IS-IS & Fortigate firewalls at Cisco Nexus Data Centers

How to run the IS-IS dynamic routing protocol in Cisco Nexus and FortiGate environments.

Content will be available very soon; preparation is in progress. Please have patience.

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